ORCID Profile
0000-0001-5967-7954
Current Organisations
University of Western Australia
,
Griffith University
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Photonics and Electro-Optical Engineering (excl. Communications) | Microelectromechanical Systems (MEMS) | Microelectronics and Integrated Circuits | Materials Engineering not elsewhere classified | Mechanical Engineering | Electrical and Electronic Engineering | Nanotechnology | Materials Engineering | Technology not elsewhere classified | Photodetectors, Optical Sensors and Solar Cells | Other Electronic Engineering | Compound Semiconductors | Metals and Alloy Materials | Photonics, Optoelectronics and Optical Communications | Ore Deposit Petrology | Mechanical engineering | Geology | Ceramics | Earth Sciences not elsewhere classified | Communications Technologies | Biomedical Engineering not elsewhere classified | Colloid and Surface Chemistry | Biomedical Engineering | Optical And Photonic Systems | Physical Chemistry (Incl. Structural) | Engineering not elsewhere classified | Structural Chemistry and Spectroscopy | Nanometrology | Exploration Geochemistry | Nanophotonics | Microelectromechanical systems (MEMS) | Nanoscale Characterisation | Optical Physics not elsewhere classified | Nanomanufacturing | Nanomaterials | Plant Cell and Molecular Biology | Interdisciplinary Engineering Not Elsewhere Classified | Materials Engineering Not Elsewhere Classified | Engineering Instrumentation | Photonic and electro-optical devices sensors and systems (excl. communications) | Nanofabrication, Growth and Self Assembly
ANZSRC Socio-Economic Objective (SEO)
Expanding Knowledge in Engineering | Integrated Circuits and Devices | Emerging Defence Technologies | Mineral Exploration not elsewhere classified | Expanding Knowledge in Technology | Expanding Knowledge in the Physical Sciences | National Security | Energy Storage (excl. Hydrogen) | Environmentally Sustainable Plant Production not elsewhere classified | Integrated circuits and devices | Industrial Instruments | Scientific Instruments | Expanding Knowledge in the Biological Sciences | Renewable Energy not elsewhere classified | Ceramics, Glass and Industrial Mineral Products not elsewhere classified | Fabricated Metal Products not elsewhere classified | Other | Consumer Electronic Equipment (excl. Communication Equipment) | Integrated Systems | Energy Transformation not elsewhere classified | Industrial instrumentation | Manufacturing not elsewhere classified | Integrated systems | Solar-Photovoltaic Energy | Expanding Knowledge in the Chemical Sciences | Medical Instruments | Precious (Noble) Metal Ore Exploration | Titanium Minerals, Zircon, and Rare Earth Metal Ore (e.g. Monazite) Exploration |
Related Links
Publications
Fast tunable terahertz absorber based on a MEMS-driven metamaterial
Publisher: OSA
Date: 2017
Classification of flow regimes for environmental flow assessment in regulated rivers: The Huai river basin, China
Publisher: Wiley
Date: 18-01-2012
DOI: 10.1002/RRA.1483
Modelling and Charactrization of the MEMS based filters for the spectroscopic imaging applications
Publisher: IEEE
Date: 12-2018
Food webs of two intermittently open estuaries receiving 15N-enriched sewage effluent
Publisher: Elsevier BV
Date: 2007
Biodiversity values of remnant freshwater floodplain lagoons in agricultural catchments: Evidence for fish of the Wet Tropics bioregion, northern Australia
Publisher: Wiley
Date: 11-08-2015
DOI: 10.1002/AQC.2489
Within-lake detection of the effects of tourist activities in the littoral zone of oligotrophic dune lakes
Publisher: Michigan State University Press
Date: 04-2005
DOI: 10.1080/14634980590953211
Abstract: Intensive recreational use of oligotrophic lakes can lead to increases in epilimnetic nutrient concentrations (through direct inputs from urine or re-suspension of sediments) and the development of undesirable algal blooms. Despite these adverse ecological responses to tourist activities, many lake monitoring programs do not address tourist nutrient inputs at appropriate spatial and temporal scales. This paper presents results of investigations aimed at detecting the effects of nutrient inputs to perched dune lakes on Fraser Island, principally through within-lake comparisons of nutrient and algal variables. Nutrient concentrations and algal biomass were measured in heavily visited (disturbed) and inaccessible (reference) sites within five perched dune lakes on Fraser Island, Australia, during the summer of 1999/2000. Whilst nutrient and phytoplankton chlorophyll a concentrations did not differ between sites, periphyton chlorophyll a concentrations were occasionally significantly higher in disturbed sites than in reference sites, particularly in the very popular clear lakes, suggesting that algal growth may be enhanced by tourist activities. Experimental manipulations of nitrogen and phosphorus concentrations in algal (phytoplankton and periphyton) bioassays were undertaken in each lake over the 2000/2001 summer, to assess algal responses to nutrient additions. The response of phytoplankton communities to nutrient additions varied greatly between lakes, with evidence of limitation or co-limitation by nitrogen and phosphorus in all systems. Periphyton biomass showed similar trends to phytoplankton in some lakes, but these were not significant. Nutrients added to lakes by tourists are likely to be rapidly assimilated by littoral zone periphyton communities in these oligotrophic lakes. As a result, impacts of tourism are not likely to be detected by traditional measurements of open water nutrient and phytoplankton chlorophyll a concentrations. Instead, measurement of periphyton growth and/or biomass (chlorophyll a) in the littoral zone might be the most spatially and temporally relevant indicator of tourist impacts in these lakes.
Not for all seasons: Why timing is critical in the design of visitor impact monitoring programs for aquatic sites within protected areas
Publisher: Informa UK Limited
Date: 12-2012
Modelling and Fabrication of Anti-Stiction Features for Electrostatically Actuated Microsystems
Publisher: IEEE
Date: 12-2018
The importance of zooplankton in the diets of three native fish species in floodplain waterholes of a dryland river, the Macintyre River, Australia
Publisher: Springer Science and Business Media LLC
Date: 28-09-2008
Spatial variation in the distribution and abundance of submersed macrophytes in an Australian subtropical river
Publisher: Elsevier BV
Date: 11-2003
Macrophytes as indicators of stream condition in the wet tropics region, Northern Queensland, Australia
Publisher: Elsevier BV
Date: 03-2010
Accelerating environmental flow implementation to bend the curve of global freshwater biodiversity loss
Publisher: Canadian Science Publishing
Date: 06-07-2023
DOI: 10.1139/ER-2022-0126
Abstract: Environmental flows (e-flows) aim to mitigate the threat of altered hydrological regimes in river systems and connected waterbodies and are an important component of integrated strategies to address multiple threats to freshwater bio ersity. Expanding and accelerating implementation of e-flows can support river conservation and help to restore the bio ersity and resilience of hydrologically altered and water-stressed rivers and connected freshwater ecosystems. While there have been significant developments in e-flows science, assessment and societal acceptance, implementation of e-flows within water resources management has been slower than required and geographically uneven. This review explores critical factors that enable successful e-flows implementation and bio ersity outcomes in particular, drawing on 13 case studies and the literature. It presents e-flows implementation as an adaptive management cycle enabled by 10 factors: legislation and governance, financial and human resourcing, stakeholder engagement and co-production of knowledge, collaborative monitoring of ecological and social-economic outcomes, capacity training and research, exploration of trade-offs among water users, removing or retrofitting water infrastructure to facilitate e-flows and connectivity, and adaptation to climate change. Recognising that there may be barriers and limitations to the full and effective enablement of each factor, the authors have identified corresponding options and generalizable recommendations for actions to overcome prominent constraints, drawing on the case studies and wider literature. The urgency of addressing flow-related freshwater bio ersity loss demands collaborative networks to train and empower a new generation of e-flows practitioners equipped with the latest tools and insights to lead adaptive environmental water management globally. Mainstreaming e-flows within conservation planning, integrated water resource management (IWRM), river restoration strategies and adaptations to climate change, is imperative. The policy drivers and associated funding commitments of the Kunming-Montreal Global Bio ersity Framework offer crucial opportunities to achieve the human benefits contributed by e-flows as nature-based solutions (NBS), such as flood risk management, floodplain fisheries restoration and increased river resilience to climate change.
Temporal changes in fish abundance in response to hydrological variability in a dryland floodplain river
Publisher: CSIRO Publishing
Date: 2009
DOI: 10.1071/MF08118
Abstract: Riverine fish living in unpredictable flow environments tend to be ecological generalists with traits that allow them to persist under highly variable and often harsh conditions associated with hydrological variation. Cooper Creek, an Australian dryland river, is characterised by extreme flow variability, especially in the magnitude, timing and duration of channel flows and floods, which, if they occur, do so mainly in summer. The present study examined the influence of hydrological variability on fish assemblages and abundance in four waterholes in the Windorah reach of Cooper Creek over eight occasions between 2001 and 2004. Antecedent flows had marked influences on fish species richness and assemblage structure. Following high summer flows, all waterholes supported a rich and abundant fish fauna, whereas fewer species and lower numbers were recorded following periods of zero channel flow. Recruitment of three of the four most common and abundant species was enhanced when intermittent flows inundated backwater and floodplain habitats that provide a food-rich environment. Opportunistic responses to rising channel flows and occasional large floods in Cooper Creek help to explain the prominent ‘boom’ patterns of fish production in this arid-zone river, whereas low-level recruitment during periods of low or no flow maintains populations of some species through the ‘bust’.
Modelling wetland connectivity during overbank flooding in a tropical floodplain in north Queensland, Australia
Publisher: Wiley
Date: 18-11-2012
DOI: 10.1002/HYP.8364
Effect of dietary lipid on the fatty acid composition of silver perch (Leiopotherapon bidyanus) lipids
Publisher: Elsevier BV
Date: 1989
Assessment of hydraulic fish habitat condition using integrated toolkit: a case study of the Geum river basin, Republic of Korea
Publisher: IWA Publishing
Date: 12-2010
DOI: 10.2166/WST.2010.425
Abstract: Artificial changes of rivers, including construction and operation of dams, inevitably lead to physical and ecological changes throughout waterways and their floodplains. In this study, a conceptual model coupled with integrated numerical modeling is presented for hydraulic fish habitat assessment of the Geum River basin, Republic of Korea. Based on the major events which might have affected the ecological system, a conceptual model was formulated to guide desktop and field studies, modeling and scenario evaluations. The result of hydraulic fish habitat assessment indicated that the construction of the Daecheong Multipurpose Dam (DMD) in the Geum River basin has altered flow magnitudes and reduced the river's flow variability. Changes are evident in the magnitude of medium and small flows and the river experiences increased low flows during the dry season. Black shiner, an endangered fish species in Korea, was selected and analyzed to explore relationships between flow regime change by dams and changes to its preferred habitats. As a result, fewer sensitive riffle-benthic species were observed in the reaches downstream of DMD due to the reduction of suitable habitat conditions such as riffle-pool sequences. The proposed conceptual model and integrated toolkit would allow river managers to isolate the physical and biological effects associated with dam operation and could be useful for developing river management strategies.
Characterization and Modeling of Photostriction in Silicon Cantilevers Fabricated on Silicon-on-Insulator Substrates
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 02-2015
On-chip read-out of picomechanical motion under ambient conditions
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4NR05419A
Abstract: A novel method for monitoring the nanomechanical movement of suspended cantilever structures which has great potential for use in applications ranging from biological/chemical sensing to atomic force microscopy.
Ecosystem science: Toward a new paradigm for managing Australia's inland aquatic ecosystems
Publisher: CSIRO Publishing
Date: 2009
DOI: 10.1071/MF08188
Abstract: Freshwater ecosystems are a foundation of our social, cultural, spiritual and economic well being. The degraded condition of many of Australia’s river ecosystems is testament to our failure to manage these resources wisely. Ecosystem science involves the holistic study of complex biophysical systems to understand the drivers that influence ecological pattern and process. Ecosystem science should underpin both water management and policy. Our understanding of aquatic ecosystems lags behind the increasing problems caused by past land and water management. Current post-graduate training programmes will not provide the aquatic ecosystem scientists needed by government and management agencies to prevent further degradation. We advocate new initiatives to capture the skills, knowledge and innovation of our research community by engaging scientists and managers in large-scale, long-term ecosystem science programmes across Australia and to integrate these programmes with community aspirations, policy, planning and management. We call on management agencies to increase their support for and uptake and use of ecosystem science. We also advocate establishment of national archives for long-term ecologically-relevant data and s les, and clear custodial arrangements to protect, update and facilitate knowledge-transfer. These initiatives need to be supported by more extensive, better-funded post-graduate and post-doctoral programmes in ecosystem science and management.
Modelling hydrological connectivity of tropical floodplain wetlands via a combined natural and artificial stream network
Publisher: Wiley
Date: 09-10-2014
DOI: 10.1002/HYP.10065
Aquatic ecosystems in inland Australia: Tourism and recreational significance, ecological impacts and imperatives for management
Publisher: CSIRO Publishing
Date: 2012
DOI: 10.1071/MF11198
Abstract: The value of aquatic systems for bio ersity, agriculture, pastoralism and mining is widely recognised, whereas their significance for tourism and recreation is often poorly acknowledged. We surveyed protected-area managers, local governments and tour operators (river and general) to determine how aquatic systems were used in inland Australia for tourism and recreation and the perceived impacts of these uses. Inland waterbodies were reported by all respondent groups to be highly significant foci for visitors. Natural features were rated as more important to visitors than infrastructure by protected-area managers and river-tour operators, whereas all respondent groups identified water clarity, water quality and accessibility to water as important aspects of visitor appeal. Although % of respondents nominated visitors as being environmentally aware, visitors were reported to have a range of negative effects on the ecological condition of inland waterbodies, especially on water quality, and to also increase erosion and the loss of fringing vegetation. Managing the recreational use of inland waterbodies will become increasingly important as demand from all sectors intensifies and climate-change impacts become more severe. Management must take into account variations in perceptions by different stakeholder groups and the paradox of inappropriate visitor behaviour despite visitors’ apparent environmental awareness.
Are alien fish a reliable indicator of river health?
Publisher: Wiley
Date: 17-11-2005
Ecological and Cultural Understanding as a Basis for Management of a Globally Significant Island Landscape
Publisher: MDPI AG
Date: 12-07-2022
Abstract: Islands provide the opportunity to explore management regimes and research issues related to the isolation, uniqueness, and integrity of ecological systems. K’gari (Fraser Island) is an Australian World Heritage property listed based on its outstanding natural value, specifically, the unique wilderness characteristics and the ersity of ecosystem types. Our goal was to draw on an understanding of the natural and cultural environment of K’gari as a foundation on which to build a management model that includes First Nations Peoples in future management and research. Our research involved an analysis of papers in the peer-reviewed scientific literature, original reports, letters, and other manuscripts now housed in the K’gari Fraser Island Research Archive. The objectives of the research were: (1) to review key historical events that form the cultural, social, and environmental narrative (2) review the major natural features of the island and threats (3) identify the gaps in research (4) analyse the management and conservation challenges associated with tourism, biosecurity threats, vegetation management practices, and climate change and discuss whether the requirements for sustaining island ecological integrity can be met in the future and (5) identify commonalities and general management principles that may apply globally to other island systems and other World Heritage sites listed on the basis of their unique natural and cultural features. We found that the characteristics that contribute to island uniqueness are also constraints for research funding and publication however, they are important themes that warrant more investment. Our review suggests that K’gari is a contested space between tourist visitation and associated environmental impacts, with an island that has rich First Nations history, extraordinary ecological ersity, and breathtaking aesthetic beauty. This juxtaposition is reflected in disparate views of custodianship and use, and the management strategies are needed to achieve multiple objectives in an environmentally sustainable way whilst creating cultural equity in modern times. We offer a foundation on which to build a co-management model that includes First Nations Peoples in governance, management, research, and monitoring.
An optically resonant position read-out system for MEMS gas sensors
Publisher: SPIE
Date: 25-06-2014
DOI: 10.1117/12.2053135
The impacts of drought on freshwater ecosystems: an Australian perspective
Publisher: Springer Science and Business Media LLC
Date: 26-02-2008
Control of Sidewall Profile in Dry Plasma Etching of Polyimide
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 06-2017
Method for optical modelling of non-uniform and non-parallel multi-thin film MEMS optical filters and mirrors
Publisher: IEEE
Date: 12-2018
Somatic characteristics of an Australian population of Oreochromis mossambicus (Pisces: Cichlidae)
Publisher: Springer Science and Business Media LLC
Date: 12-1990
DOI: 10.1007/BF00001185
Basic principles and ecological consequences of altered flow regimes for aquatic biodiversity
Publisher: Springer Science and Business Media LLC
Date: 10-2002
DOI: 10.1007/S00267-002-2737-0
Abstract: The flow regime is regarded by many aquatic ecologists to be the key driver of river and floodplain wetland ecosystems. We have focused this literature review around four key principles to highlight the important mechanisms that link hydrology and aquatic bio ersity and to illustrate the consequent impacts of altered flow regimes: Firstly, flow is a major determinant of physical habitat in streams, which in turn is a major determinant of biotic composition Secondly, aquatic species have evolved life history strategies primarily in direct response to the natural flow regimes Thirdly, maintenance of natural patterns of longitudinal and lateral connectivity is essential to the viability of populations of many riverine species Finally, the invasion and success of exotic and introduced species in rivers is facilitated by the alteration of flow regimes. The impacts of flow change are manifest across broad taxonomic groups including riverine plants, invertebrates, and fish. Despite growing recognition of these relationships, ecologists still struggle to predict and quantify biotic responses to altered flow regimes. One obvious difficulty is the ability to distinguish the direct effects of modified flow regimes from impacts associated with land-use change that often accompanies water resource development. Currently, evidence about how rivers function in relation to flow regime and the flows that aquatic organisms need exists largely as a series of untested hypotheses. To overcome these problems, aquatic science needs to move quickly into a manipulative or experimental phase, preferably with the aims of restoration and measuring ecosystem response.
Integrating freshwater wetland science into planning for Great Barrier Reef sustainability
Publisher: Wiley
Date: 09-2020
DOI: 10.1002/AQC.3339
Distribution and habitat associations of the endangered Oxleyan pygmy perch,Nannoperca oxleyanaWhitley, in eastern Australia
Publisher: Wiley
Date: 11-2008
DOI: 10.1002/AQC.936
How do low magnitudes of hydrologic alteration impact riverine fish populations and assemblage characteristics?
Publisher: Elsevier BV
Date: 04-2014
Modelling of damping characteristics in silicon-gold bilayer cantilevers
Publisher: IEEE
Date: 12-2018
Silicon and Silicon dioxide thin films deposited by ICPCVD at low temperature and high rate for MEMS applications
Publisher: IEEE
Date: 12-2018
Preserving the biodiversity and ecological services of rivers: new challenges and research opportunities
Publisher: Wiley
Date: 15-12-2009
Optimization of ICPCVD Amorphous Silicon for Optical MEMS Applications
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 12-2015
The ecological limits of hydrologic alteration (ELOHA): A new framework for developing regional environmental flow standards
Publisher: Wiley
Date: 15-12-2010
Model and Analysis of a High Sensitivity Resonant Optical Read-Out Approach Suitable for Cantilever Sensor Arrays
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 06-2012
Polycyclic aromatic hydrocarbon residues in the sediments of a dune lake as a result of power boating
Publisher: Wiley
Date: 03-2001
3D Printed Fabry-Perot Filters for Terahertz Spectral Range
Publisher: Springer Science and Business Media LLC
Date: 16-11-2022
Large-Area MEMS-Based Distributed Bragg Reflectors for Short-Wave and Mid-Wave Infrared Hyperspectral Imaging Applications
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 12-2015
Iron oxide-Palladium core-shell nanospheres for ferromagnetic resonance-based hydrogen gas sensing
Publisher: Elsevier BV
Date: 02-2022
Translocation and Spread of Piscivorous Fishes in the Burdekin River, North-eastern Australia
Publisher: Springer Science and Business Media LLC
Date: 11-01-2006
Dielectric thin films for MEMS-based optical sensors
Publisher: Elsevier BV
Date: 04-2007
MEMS-based Tunable Fabry-Perot Filters for Adaptive Multispectral Thermal Imaging
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 02-2016
Effects of deposition temperature on the mechanical and physical properties of silicon nitride thin films
Publisher: AIP Publishing
Date: 15-08-2005
DOI: 10.1063/1.2006972
Abstract: This study investigates the mechanical and physical properties of low-temperature plasma-enhanced chemical-vapor-deposited silicon nitride thin films, with particular respect to the effect of deposition temperature. The mechanical properties of the films were evaluated by both nanoindentation and microcantilever beam-bending techniques. The cantilever beam specimens were fabricated from silicon nitride thin films deposited on (100) silicon wafer by bulk micromachining. The density of the films was determined from quartz crystal microbalance measurements, as well as from the resonant modes of the cantilever beams, which were mechanically excited using an atomic force microscope. It was found that both the Young’s modulus and density of the films were significantly reduced with decreasing deposition temperature. The decrease in Young’s modulus is attributed to the decreasing material density. The decrease in density with decreasing deposition temperature is believed to be due to the slower diffusion rates of the deposited species, which retarded the densification of the film during the deposition process.
High quality factor mg-scale silicon mechanical resonators for 3-mode optoacoustic parametric amplifiers
Publisher: AIP Publishing
Date: 03-07-2013
DOI: 10.1063/1.4812731
Abstract: Milligram-scale resonators have been shown to be suitable for the creation of 3-mode optoacoustic parametric lifiers, based on a phenomena first predicted for advanced gravitational-wave detectors. To achieve practical optoacoustic parametric devices, high quality factor resonators are required. We present millimetre-scale silicon resonators designed to exhibit a torsional vibration mode with a frequency in the 105–106 Hz range, for observation of 3-mode optoacoustic interactions in a compact table-top system. Our design incorporates an isolation stage and minimizes the acoustic loss from optical coating. We observe a quality factor of 7.5 × 105 for a mode frequency of 401.5 kHz, at room temperature and pressure of 10–3 Pa. We confirmed the mode shape by mapping the litude response across the resonator and comparing to finite element modelling. This study contributes to the development of 3-mode optoacoustic parametric lifiers for use in novel high-sensitivity signal transducers and quantum measurement experiments.
Fish diet composition in floodplain lagoons of an Australian dryland river in relation to an extended dry period following flooding
Publisher: Springer Science and Business Media LLC
Date: 17-09-2013
Response enhancement of a magnetic-film based hydrogen gas sensor using size reduction to microchip dimensions
Publisher: IEEE
Date: 12-2018
Responses of fish to experimental introduction of structural woody habitat in riffles and pools
Publisher: Wiley
Date: 26-10-2012
A high deposition rate amorphous-silicon process for use as a thick sacrificial layer in surface-micromachining
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 04-2017
Environmental flow requirements of fish in the lower reach of the Yellow River
Publisher: Informa UK Limited
Date: 09-09-2010
Ultrathin tunable terahertz absorber based on MEMS-driven metamaterial
Publisher: Springer Science and Business Media LLC
Date: 28-08-2017
DOI: 10.1038/MICRONANO.2017.33
Abstract: The realization of high-performance tunable absorbers for terahertz frequencies is crucial for advancing applications such as single-pixel imaging and spectroscopy. Based on the strong position sensitivity of metamaterials’ electromagnetic response, we combine meta-atoms that support strongly localized modes with suspended flat membranes that can be driven electrostatically. This design maximizes the tunability range for small mechanical displacements of the membranes. We employ a micro-electro-mechanical system technology and successfully fabricate the devices. Our prototype devices are among the best-performing tunable THz absorbers demonstrated to date, with an ultrathin device thickness (~1/50 of the working wavelength), absorption varying between 60% and 80% in the initial state when the membranes remain suspended, and fast switching speed (~27 μs). The absorption is tuned by an applied voltage, with the most marked results achieved when the structure reaches the snap-down state. In this case, the resonance shifts by % of the linewidth (14% of the initial resonance frequency), and the absolute absorption modulation measured at the initial resonance can reach 65%. The demonstrated approach can be further optimized and extended to benefit numerous applications in THz technology.
Determining intrinsic stress and strain state of fibre-textured thin films by x-ray diffraction measurements using combined asymmetrical and Bragg-Brentano configurations
Publisher: Elsevier BV
Date: 11-2019
Predictable hydrology, habitat and food resources determine fish recruitment dynamics in an incised tropical Australian river
Publisher: Wiley
Date: 08-2022
DOI: 10.1002/ECO.2457
Abstract: The critical role of hydrology in tropical floodplain river systems is well established, but there is limited information on the drivers of larval and juvenile recruitment of freshwater fishes in small tropical rivers. Herein, we describe the patterns of occurrence and abundance of fish larvae, juveniles and adults in the lower reaches of a short, deeply incised coastal river of the Australian Wet Tropics. We expected that several environmental factors, including site proximity to the coast and flow and salinity regimes, would influence the life‐history strategies, distribution and abundance of larval and juvenile fishes. Study sites contained the larval stages of 23 of the 38 native species present, including nine species for which there are no previous larval records from Wet Tropics rivers or elsewhere. Larvae and juvenile fishes of most species exhibited maximum abundance in the benign but productive dry season, but some diadromous species showed peak abundance in tidal riverine/estuarine waters during the wet season. Most species exhibited peak larval abundance during the same months of Years 1 and 2 under similar hydrological, physicochemical water quality and habitat conditions in both years. These results are summarised in a conceptual model depicting how seasonal hydrology interacts with channel and habitat characteristics to influence life‐history strategies and hence spatial and temporal variations in larval fish abundance in Wet Tropics rivers. Our results highlight the importance of seasonal contrasts in flow, habitat structure, water quality and food resources in supporting the variety of life‐history strategies in the fish assemblages.
Continuous recruitment underpins fish persistence in the arid rivers of far-western Queensland, Australia
Publisher: CSIRO Publishing
Date: 2011
DOI: 10.1071/MF11021
Abstract: Fish living in highly variable and unpredictable environments need to possess life-history strategies that enable them to survive environmental extremes such as floods and drought. We used the length–frequency distributions of multiple fish species in multiple seasons and highly variable hydrological conditions to infer antecedent breeding behaviour in rivers of far-western Queensland, Australia. Hypotheses tested were as follows: (1) recruitment of some or all species of fish would occur within waterholes during no-flow periods (2) there would be seasonal recruitment responses in some fish species (3) recruitment of some species would be enhanced by channel flows and/or flooding. Hydrology and the incidence of flooding were highly variable across the study area during 2006–2008. Flood-influenced recruitment was evident for Hyrtl's tandan, Barcoo grunter and Welch's grunter. Silver tandan, golden goby, Cooper Creek catfish and Australian smelt showed evidence of seasonal recruitment unrelated to antecedent hydrology. However, most species demonstrated continual recruitment in isolated waterholes, irrespective of antecedent flow conditions and season. Continual and seasonal recruitment capabilities have obvious advantages over flood-pulse recruitment in rivers with highly unpredictable flood regimes and underpin the persistence of many fish species in arid and semiarid rivers.
Freshwater fishes of the Burdekin River, Australia: biogeography, history and spatial variation in community structure
Publisher: Springer Science and Business Media LLC
Date: 11-1998
Freshwater biodiversity: Importance, threats, status and conservation challenges
Publisher: Wiley
Date: 12-12-2006
Silicon-Air-Silicon Distributed Bragg Reflectors for Visible and Near Infrared Optical MEMS
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 10-2015
Broadband Microelectromechanical Systems-Based Silicon Nitride Photonic Switch
Publisher: Wiley
Date: 29-10-2023
Local bonding environment of plasma deposited nitrogen-rich silicon nitride thin films
Publisher: AIP Publishing
Date: 22-04-2005
DOI: 10.1063/1.1889236
Abstract: Plasma deposited nitrogen-rich silicon nitride thin films were prepared at temperatures between 80 and 300 °C. The infrared transmission (400–4000cm−1) was measured, and selected absorption bands were quantified through a multiple Lorentzian oscillator parametric analysis. It is observed that the concentration of silicon-centered tetrahedra bonded together through nitrogen atoms increases monotonically with increasing deposition temperature. A qualitative model is presented to highlight the impact of the active adsorption site density on the degree of stepped (ordered) nucleation at the vapor-film interface. The importance of this growth profile, in particular for micro-systems-technology, is discussed in conjunction with measurements of the biaxial modulus and residual stress of the thin films. A mechanism for residual stress controllability is also presented. The atomic concentrations of silicon, nitrogen, and hydrogen in the thin films were calculated using infrared calibration factors derived from the deposition temperature dependent condensation processes. The results for silicon nitride thin films deposited at 300 °C were observed to be similar in composition to silicon diimide. Additional observations of the infrared transmission characteristics are reported, which include the identification of silazane bridge characteristics for the absorption feature around 610cm−1, which is typically associated with Si–H (bending) absorption.
Elasto-plastic characterisation of low-temperature plasma-deposited silicon nitride thin films using nanoindentation
Publisher: Inderscience Publishers
Date: 2009
Environmental stability and cryogenic thermal cycling of low-temperature plasma-deposited silicon nitride thin films
Publisher: AIP Publishing
Date: 03-2006
DOI: 10.1063/1.2179969
Abstract: Stress in low-temperature plasma-enhanced chemical vapor deposited silicon nitride (SiNx) thin films subject to cryogenic thermal cycling (100–323K) has been measured. It is observed that the SiNx deposition temperature strongly influences the thin film characteristics. For films deposited between 200 and 300°C, the thermal expansion coefficient is similar to that of silicon over the 180–323K temperature range. The room temperature thermal expansion coefficient of SiNx films is found to decrease sublinearly from 5.2×10−6to2.6×10−6K−1 as the temperature of the deposition process is increased from 50to300°C. The negative correlation between deposition temperature and thin film thermal expansion coefficient, and the positive correlation between deposition temperature and the thin film Young’s modulus inferred from nanoindentation are postulated to be associated with the local bonding environment within the thin film. The stress state of SiNx films deposited above 150°C is stable under atmospheric conditions, in contrast to SiNx films deposited below 100°C, which under atmospheric storage conditions become more tensile with time due to oxidation. In addition, SiNx thin films deposited below 100°C exhibit higher tensile stress values in vacuum than at atmospheric pressure, and vacuum annealing at 50°C of films deposited below 100°C introduces further tensile stress changes. These stress changes have been shown to be fully reversible upon reexposure to high purity nitrogen, helium, argon, oxygen, or laboratory atmosphere, and are likely to be associated with thin film porosity.
Towards MEMS-based chem/bio sensing arrays with on-chip optical read-out | Rozwój czujników MEMS z zintegrowanym systemem odczytu
Publisher: Wydawnictwo SIGMA-NOT, sp. z.o.o.
Date: 05-10-2015
A WDM capable integrated optical readout of a MEMS sensor
Publisher: Elsevier BV
Date: 2012
Determination of HgCdTe Elasto-Plastic Properties using Nanoindentation
Publisher: Springer Science and Business Media LLC
Date: 06-2006
Effect of Hydrogen Gas on Ferromagnetic Resonance Properties of Ni-Co-Pd Ternary Alloy Films
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 02-2021
Ge/ZnS-Based Micromachined Fabry-Perot Filters for Optical MEMS in the Longwave Infrared
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 12-2015
Process Control of Cantilever Deflection for Sensor Application Based on Optical Waveguides
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 06-2013
Application of a Microfabricated Microwave Resonator in a
Co
Publisher:
American Physical Society (APS)
Date:
04-08-2022
Publisher: American Physical Society (APS)
Date: 04-08-2022
Estimating local stream fish assemblage attributes: Sampling effort and efficiency at two spatial scales
Publisher: CSIRO Publishing
Date: 2006
DOI: 10.1071/MF06062
Abstract: As part of a wider study to develop an ecosystem-health monitoring program for wadeable streams of south-eastern Queensland, Australia, comparisons were made regarding the accuracy, precision and relative efficiency of single-pass backpack electrofishing and multiple-pass electrofishing plus supplementary seine netting to quantify fish assemblage attributes at two spatial scales (within discrete mesohabitat units and within stream reaches consisting of multiple mesohabitat units). The results demonstrate that multiple-pass electrofishing plus seine netting provide more accurate and precise estimates of fish species richness, assemblage composition and species relative abundances in comparison to single-pass electrofishing alone, and that intensive s ling of three mesohabitat units (equivalent to a riffle–run–pool sequence) is a more efficient s ling strategy to estimate reach-scale assemblage attributes than less intensive s ling over larger spatial scales. This intensive s ling protocol was sufficiently sensitive that relatively small differences in assemblage attributes ( %) could be detected with a high statistical power (1-β 0.95) and that relatively few stream reaches ( ) need be s led to accurately estimate assemblage attributes close to the true population means. The merits and potential drawbacks of the intensive s ling strategy are discussed, and it is deemed to be suitable for a range of monitoring and bioassessment objectives.
Partitioning the variation in stream fish assemblages within a spatio-temporal hierarchy
Publisher: CSIRO Publishing
Date: 2007
DOI: 10.1071/MF06183
Abstract: This paper describes the relative influence of (i) landscape scale environmental and hydrological factors, (ii) local scale environmental conditions including recent flow history, and (iii) spatial effects (proximity of sites to one another), on the spatial and temporal variation in local freshwater fish assemblages in the Mary River, south-eastern Queensland, Australia. Using canonical correspondence analysis, each of the three sets of variables explained similar amounts of variation in fish assemblages (ranging from 44 to 52%). Variation in fish assemblages was partitioned into eight unique components: pure environmental, pure spatial, pure temporal, spatially structured environmental variation, temporally structured environmental variation, spatially structured temporal variation, the combined spatial/temporal component of environmental variation and unexplained variation. The total variation explained by these components was 65%. The combined spatial/temporal/environmental component explained the largest component (30%) of the total variation in fish assemblages, whereas pure environmental (6%), temporal (9%) and spatial (2%) effects were relatively unimportant. The high degree of intercorrelation between the three different groups of explanatory variables indicates that our understanding of the importance to fish assemblages of hydrological variation (often highlighted as the major structuring force in river systems) is dependent on the environmental context in which this role is examined.
Fish movement strategies in an ephemeral river in the S impson D esert, A ustralia
Publisher: Wiley
Date: 11-07-2013
DOI: 10.1111/AEC.12075
Recent advances in environmental flows science and water management—Innovation in the Anthropocene
Publisher: Wiley
Date: 16-04-2018
DOI: 10.1111/FWB.13108
High resolution position monitoring of suspended MEMS towards biological and chemical sensors
Publisher: Springer Science and Business Media LLC
Date: 2014
DOI: 10.1557/OPL.2014.98
Abstract: We present an integrated readout technique for interrogating the suspension height of micro-electro-mechanical systems (MEMS) structures. This readout technique is envisaged to be useful in applications such as MEMS-based biological and chemical sensing, where it is necessary to obtain the accurate position of a MEMS beam. The approach is based on the suspended MEMS structure modulating light transmission in an underlying optical waveguide via Fabry-Perrot phenomena. The performance of the technique is predicted via finite difference time domain (FDTD) simulations the results of which are confirmed by experimental measurements.
MEMS-based Low SWaP solutions for multi/hyperspectral infrared sensing and imaging
Publisher: IEEE
Date: 08-2018
Diel variation in food intake and diet composition of three native fish species in floodplain lagoons of the Macintyre River, Australia
Publisher: Wiley
Date: 09-2008
New concept in infrared photodetector designs
Publisher: AIP Publishing
Date: 12-2014
DOI: 10.1063/1.4896193
Accurately defining the reference condition for summary biotic metrics: A comparison of four approaches
Publisher: Springer Science and Business Media LLC
Date: 31-03-2006
Managing threats and restoring wetlands within catchments of the Great Barrier Reef, Australia
Publisher: Wiley
Date: 25-04-2019
DOI: 10.1002/AQC.3096
Environmental flows: a scientific resource and policy framework for river conservation and restoration
Publisher: Wiley
Date: 04-2015
DOI: 10.1002/AQC.2560
Spatial and temporal variation in fish-assemblage structure in isolated waterholes during the 2001 dry season of an arid-zone floodplain river, Cooper Creek, Australia
Publisher: CSIRO Publishing
Date: 2005
DOI: 10.1071/MF04111
Abstract: Spatial and temporal variation in fish-assemblage structure within isolated waterholes on the floodplains of Cooper Creek, Australia, was studied during the 2001 dry season, a period of natural drought in this arid-zone river. Spatial variation in fish-assemblage structure and the abundance of five species in disconnected waterholes early in the dry season (April 2001) were related to the extent of floodplain inundation 14 months previously, and to the interconnectedness of waterholes and waterhole habitat structure. As the dry season progressed, waterhole volumes decreased owing to evaporative water loss and structural habitat elements (anabranches, bars, boulders) became exposed. Marked changes in fish assemblage structure between the early (April) and late (September) dry season were related to habitat loss but not to water chemistry. Interactions between flow and habitat across a nested hierarchy of spatial scales (the floodplain, the waterhole and habitat patches within waterholes) were crucial to the persistence of fish assemblages through the 2001 dry season. We conclude that the magnitude, timing and frequency of floodplain inundation and natural variations in waterhole volume must be maintained if we wish to sustain the distinctive habitats and fish assemblages of this arid-zone floodplain river.
Long-term environmental stability of residual stress of SiNx, SiOx, and Ge thin films prepared at low temperatures
Publisher: Elsevier BV
Date: 06-2009
Sensitivity analysis of a dielectric loaded 1 × 2 directional coupler switch based on foundry process optical waveguides
Publisher: SPIE-Intl Soc Optical Eng
Date: 23-08-2023
Photostriction actuation of silicon-germanium bilayer cantilevers
Publisher: AIP Publishing
Date: 26-03-2019
DOI: 10.1063/1.5075525
Abstract: This work presents a study of photostriction-based optical actuation in bilayer cantilevers made of silicon and germanium thin-films and follows previous work in this area on silicon cantilevers. This experimental and theoretical study examines the role of the silicon-germanium heterojunction in optical actuation. It is shown that the germanium layer dominates the mechanical response of the device, which can be exploited to achieve enhanced optical actuation in cantilevers.
Classification and comparison of natural and altered flow regimes to support an Australian trial of the Ecological Limits of Hydrologic Alteration framework
Publisher: Wiley
Date: 25-02-2014
DOI: 10.1002/ECO.1473
Evaluation of elastic modulus and hardness of thin films by nanoindentation
Publisher: Springer Science and Business Media LLC
Date: 10-2004
Abstract: Simple equations are proposed for determining elastic modulus and hardness properties of thin films on substrates from nanoindentation experiments. An empirical formulation relates the modulus E and hardness H of the film/substrate bilayer to corresponding material properties of the constituent materials via a power-law relation. Geometrical dependence of E and H is wholly contained in the power-law exponents, expressed here as sigmoidal functions of indenter penetration relative to film thickness. The formulation may be inverted to enable deconvolution of film properties from data on the film/substrate bilayers. Berkovich nanoindentation data for dense oxide and nitride films on silicon substrates are used to validate the equations and to demonstrate the film property deconvolution. Additional data for less dense nitride films are used to illustrate the extent to which film properties may depend on the method of fabrication.
Water for Food Water for Life
Publisher: Routledge
Date: 23-07-2013
Integrated, Resonant Optical Readout Applicable to Large Arrays of MEMS Beams
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 12-2012
Stress in low-temperature plasma enhanced chemical vapour deposited silicon nitride thin films
Publisher: IOP Publishing
Date: 13-12-2006
Electrical type conversion of p-type HgCdTe induced by nanoimprinting
Publisher: AIP Publishing
Date: 05-2011
DOI: 10.1063/1.3582062
Abstract: A nanoimprinting method was used to generate square imprints and arrays of imprints ranging in lateral dimension from 1 μm to 50 μm in p-type HgCdTe. Laser Beam Induced Current (LBIC) characterization shows electrical type conversion around each imprint and imprint array. The LBIC signal intensity surface maps of imprinted regions and their dependence with measurement temperature correspond well with surface maps of n-on-p HgCdTe photodiodes formed by conventional techniques.
Fish assemblages in subtropical rivers: Low-flow hydrology dominates hydro-ecological relationships | Les communautés piscicoles des rivières sub-tropicales: Les étiages caractérisent les relations hydro-écologiques
Publisher: Informa UK Limited
Date: 17-03-2014
The feeding ecology of freshwater fishes in two rivers of the Australian wet tropics
Publisher: Springer Science and Business Media LLC
Date: 05-1995
DOI: 10.1007/BF00001820
Characterization of mechanical, optical and structural properties of bismuth oxide thin films as a write-once medium for blue laser recording
Publisher: Springer Science and Business Media LLC
Date: 2014
DOI: 10.1557/OPL.2014.145
Abstract: We report on the preparation and characterization of crystalline bismuth oxide thin films via Biased Target Ion Beam Deposition method. A focused blue laser (405nm) is used to write an array of dots in the bismuth oxide thin film and demonstrate clear and circular recording marks in form of “bubbles” or “little volcanos” (FWHM ∼500nm). Results indicate excellent static recording characteristics, writing sensitivity and contrast. The recording mechanism is investigated and is believed to be related to laser-induced morphology change.
Biophysical status of remnant freshwater floodplain lagoons in the Great Barrier Reef catchment: A challenge for assessment and monitoring
Publisher: CSIRO Publishing
Date: 2013
DOI: 10.1071/MF12251
Abstract: We investigated the biophysical environment, invertebrate fauna and ecosystem health of lagoons on the Tully–Murray floodplain in the Queensland Wet Tropics bioregion. These wetlands are biologically rich but have declined in area and condition with agricultural development and are poorly protected, despite being located between two World Heritage areas. Lagoons varied in size, habitats and water quality, with increasing signatures of agriculture (e.g. elevated nutrient concentrations) from the upper to lower floodplain. Zooplankton were abundant, but not erse, and correlated variously with environmental variables, so were not useful in assessing lagoon condition. Benthic macroinvertebrates were abundant and erse and correlated strongly with riparian condition, habitats, water quality and degree of agriculture in the catchment, but gradients in assemblage structure were not strong because the flow regime, with multiple annual floods, maintains higher water quality than in some tropical systems. The absence of pristine reference lagoons and the limited availability of replicate sites h er the development of monitoring systems. Nevertheless, we show that appropriate s ling, analysis and knowledge of comparable systems allow inferences to be drawn regarding ecological condition. This is important because environmental managers need best available and timely advice whatever the opportunities for rigorous study design.
Dispersion of lanthanum hexaboride nanoparticles in water and in sol-gel Silica arrays
Publisher: IEEE
Date: 12-2010
Flow restoration and protection in Australian rivers
Publisher: Wiley
Date: 09-2003
DOI: 10.1002/RRA.745
Abstract: Since 1857 new Australians have constructed many thousands of weirs (3600 in the Murray–Darling Basin alone) and floodplain levee banks, 446 large dams ( m crest height) and over 50 intra‐ and inter‐basin water transfer schemes to secure water supplies for human use. Flow regulation has changed the hydrology of major rivers on three temporal sales–the flood pulse (days to weeks), flow history (weeks to years) and the long‐term statistical pattern of flows, or flow regime (decades or longer). The regulation of river flows is widely acknowledged as a major cause of deteriorating conditions in many Australian river and floodplain ecosystems. In response to mounting environmental concerns, all states, territories and the Commonwealth Government have committed the nation to the principles of ecologically sustainable development and a process of national water reform. Rivers and wetlands are now recognized as legitimate ‘users’ of water, and jurisdictions must provide water allocations to sustain and where necessary restore ecological processes and the bio ersity of water‐dependent ecosystems. Progress in the protection and restoration of river and wetland water regimes has been significant, with over half of mainland aquatic systems designated to receive water allocations of some sort. However, exactly how much water they will receive or retain is unclear from the data available. Moreover, the ecological outcomes and benefits of water allocations are not yet apparent in most aquatic ecosystems, with the exception of certain waterbird breeding events, the disruption of algal blooms in weirs and improved fish passage. After reviewing these issues, this paper addresses two vital questions: How much water does a river need? and How can this water be clawed back from other users? Studies conducted to date in Queensland rivers suggest that around 80–92% of natural mean annual flow (and other ecologically relevant hydrological indicators) may be needed to maintain a low risk of environmental degradation. In the Top End of the Northern Territory, some rivers are maintained at 80% of their natural flow, whereas two‐thirds of various flow indicators has been proposed as the restoration target for the River Murray, and 28% of natural mean annual flow has been negotiated for the Snowy River in Victoria. To validate these estimates, ecologists are seeking opportunities to turn river restoration projects into long‐term hypothesis‐driven experiments in ecological restoration, and the funding, time and institutional support to do so. The paper ends with some suggestions to advance the water reforms and achieve higher levels of water allocation for the environment. Copyright © 2003 John Wiley & Sons, Ltd.
Nanoimprint induced electrical type conversion in HgCdTe
Publisher: IEEE
Date: 12-2010
Importance of the riparian zone to the conservation and management of freshwater fish: a review
Publisher: CSIRO Publishing
Date: 2003
DOI: 10.1071/MF02041
Abstract: The relationship between freshwater fish and the integrity of the riparian zone is reviewed with special emphasis on the fauna of northern Australia. Linkages between freshwater fish and riparian zone processes are erse and important. The riparian zone occurs at the interface between terrestrial and aquatic ecosystems and it may, therefore, regulate the transfer of energy and material between these systems, as well as regulating the transmission of solar energy into the aquatic ecosystem. Riparian influences on light quantity, quality and shade in streams are discussed and predictions are made about the likely impacts associated with changes in light quality. Increased rates of transfer of thermal energy between the atmosphere and the aquatic environment in the absence of an intact riparian zone may potentially disrupt reproduction by desynchronizing the thermal regimen from regional factors, such as the flow regimen, as well as having direct effects on mortality rates, body morphology, disease resistance and metabolic rates. Impacts associated with changes in light quality range from increased egg and larval mortality due to increased ultraviolet (UV) B irradiation and a decreased ability to discriminate between potential mates to increased conspicuousness to predators. Increased insolation and proliferation of exotic pasture grasses, an increasing threat in northern Australia, are shown to have a range of impacts, including changes in habitat structure, food-web structure and the facilitation of invasion by exotic fish species. The interception of terrestrial sediments and nutrients by the riparian zone has important consequences for stream fish, maintaining habitat structure, water clarity and food-web structure. Coarse organic matter donated to the aquatic environment by the riparian zones has a large range of influences on stream habitat, which, in turn, affect bio ersity and a range of process, such as fish reproduction and predation. Terrestrial matter is also consumed directly by fish and may be a very important source of energy in some Australian systems and under certain circumstances. Attention to the linkages between fish and riparian systems is essential in efforts to rehabilitate degraded stream environments and to prevent further deterioration in freshwater fish populations in northern Australia.
Ecological roles and threats to aquatic refugia in arid landscapes: Dryland river waterholes
Publisher: CSIRO Publishing
Date: 2010
DOI: 10.1071/MF09239
Abstract: Dryland rivers are renowned for their periods of ‘boom’ related to the episodic floods that extend over vast floodplains and fuel incredible production, and periods of ‘bust’ where the extensive channel network is restricted to the permanent refugial waterholes. Many of these river systems are unregulated by dams but are under increasing pressure, especially from water abstraction and overland flow interception for agriculture and mining. Although some aquatic organisms with desiccation-resistant life stages can utilise ephemeral floodplain habitats, the larger river waterholes represent the only permanent aquatic habitat during extended periods of low or no flow. These waterholes act as aquatic refugia in an otherwise terrestrial landscape. Variable patterns of connection and disconnection in space and time are a fundamental driver of ersity and function in these dryland river systems, and are vital for dispersal and the maintenance of erse populations, generate the spatial and temporal variability in assemblage structure for a range of different organisms and fuel the productivity that sustains higher trophic levels. Changes to natural patterns of connection and disconnection of refugial waterholes, owing to water-resource development or climate change, will threaten their persistence and diminish their functional capacity to act as aquatic refugia.
A silicon based surface micro-machined distributed Bragg reflector for MEMS spectroscopic applications
Publisher: IEEE
Date: 12-2013
Optical and Membrane Modelling in a MEMS Hyperspectral Imaging System
Publisher: IEEE
Date: 2002
Large area silicon-air-silicon DBRs for infrared filter applications
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 02-2019
MEMS based hydrogen sensing with parts-per-billion resolution
Publisher: Elsevier BV
Date: 02-2019
Investigation of cerium-substituted europium iron garnets deposited by biased target ion beam deposition
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 12-2014
Limnology of naturally acidic, oligotrophic dune lakes in subtropical Australia, including chlorophyll — phosphorus relationships
Publisher: Springer Science and Business Media LLC
Date: 09-1981
DOI: 10.1007/BF00011928
Towards MEMS-based Long-wavelength Infrared Tuneable Fabry-Perot Filters
Publisher: IEEE
Date: 12-2014
Issues in source calibration for biased target ion beam deposition
Publisher: IEEE
Date: 12-2014
Aquatic Ecosystem Health & Management: Preface
Publisher: Michigan State University Press
Date: 2003
Optical Microelectromechanical Systems Technologies for Spectrally Adaptive Sensing and Imaging
Publisher: Wiley
Date: 12-09-2022
Abstract: Evolving from past black‐and‐white images, through present red‐green‐blue spectral colors, future remote imaging systems promise spectroscopic functionalities extending well beyond the visible wavelengths. This allows real‐time spectral information to be gathered from multiple wavelength bands that is applicable to numerous remote sensing spectroscopy/imaging applications and aids target recognition. This paper reviews the wavelength tunable microelectromechanical systems (MEMS) optical filter technologies developed for the important infrared and the emerging terahertz wavelength bands of the electromagnetic spectrum with the fabrication effort being enabled by the Western Australian Node of the Australian National Fabrication Facility. A low size, weight and power (SWaP) platform solution is demonstrated delivering mechanically robust, field‐portable, spectroscopic, chem/bio sensing suitable for deployment in remote sensing and imaging applications.
Sequential floods drive booms and wetland persistence in dryland rivers: A synthesis
Publisher: CSIRO Publishing
Date: 2010
DOI: 10.1071/MF10106
Abstract: Flow is a key driver regulating processes and ersity in river systems across a range of temporal and spatial scales. In dryland rivers, variability in the timing and scale of floods has specific ecological significance, playing a major role in sustaining biotic ersity across the river-floodplain mosaic. However, longitudinal effects of floods are equally important, delivering water downstream through channels and wetland complexes. Interaction among spatially distributed wetlands, their connecting channel and floodplain geomorphology and the temporally variable flow events not only creates the spatial complexity in dryland rivers but also determines temporal persistence of wetlands. These act as hydrological ‘sponges’, absorbing water from upstream and needing to fill before releasing water downstream. Sequential high flow events are essential for the ecological persistence of riverine wetlands and the transmission of flows further downstream through the channel network. These flood sequences maintain aquatic refugia and drive booms in productivity sustaining aquatic and terrestrial biota over large spatial and temporal scales. Disrupting the sequence, with modified flow regimes and water removal for ersion (e.g. irrigation), significantly reduces the opportunity for wetland replenishment. As a result, the benefits of sequential flooding to the wetland ‘sponges’ and their biotic communities will be lost.
Confronting hysteresis: Wood based river rehabilitation in highly altered riverine landscapes of south-eastern Australia
Publisher: Elsevier BV
Date: 09-2006
Nanoindentation of HgCdTe prepared by molecular beam epitaxy
Publisher: AIP Publishing
Date: 12-12-2005
DOI: 10.1063/1.2143411
Abstract: Nanoindentation has been used to investigate the elastoplastic behavior of Hg0.7Cd0.3Te prepared by molecular beam epitaxy. It was found that Hg0.7Cd0.3Te had a modulus of elasticity of ∼50GPa and hardness of ∼0.66GPa. The HgCdTe response to nanoindentation was found to be purely elastic for low loads and developed into ∼10% elastic and ∼90% plastic response for higher-load indentation exhibiting significant amounts of creep. The onset of plasticity has been observed to be marked by discontinuities or “pop-in” events in the indenter load-penetration curves at sheer stresses of ∼1.8GPa, and has been correlated with the homogeneous nucleation and propagation of dislocations.
Threatened fishes of the world: Pseudomugil mellis Allen & Ivantsoff, 1982 (Pseudomugilidae)
Publisher: Springer Science and Business Media LLC
Date: 07-1995
DOI: 10.1007/BF00005858
Origins and Maintenance of Freshwater Fish Biodiversity in the Wet Tropics Region
Publisher: Wiley
Date: 23-04-2008
Development and application of a predictive model of freshwater fish assemblage composition to evaluate river health in eastern Australia
Publisher: Springer Science and Business Media LLC
Date: 11-04-2006
Effect of FIB milling on MEMS SOI Cantilevers
Publisher: IEEE
Date: 12-2012
Achieving ultra-large elastic strains in Nb thin films on NiTi phase-transforming substrate by the principle of lattice strain matching
Publisher: Elsevier BV
Date: 2021
Environmental flow requirements of fish in Lesotho rivers using the DRIFT methodology
Publisher: Wiley
Date: 09-2003
DOI: 10.1002/RRA.728
Abstract: DRIFT (Downstream Response to Imposed Flow Transformations) is a scenario‐based environmental flow assessment methodology applied during impact studies associated with the Lesotho Highlands Water Project, Southern Africa. DRIFT offers a structured process for predicting the biophysical, social and economic consequences of altering a river's flow regime. The fish component of DRIFT provides a ten‐step protocol designed to make such predictions using field data on a river's fish fauna linked to information on flow‐related aspects of fish biology drawn from the literature and the knowledge base and professional experience of fish ecologists. A worked ex le of the methodology is presented based on a study site downstream from Katse Dam on the Malibamatso River, Lesotho, where the ecological consequences of four flow scenarios were evaluated. DRIFT and its fish component have emerged from studies in a semi‐arid, developing region where unpredictable hydrological regimes and data scarcity constrain the prediction of ecological responses to flow regulation. Faced with similar information constraints, scientific uncertainty and limited windows of opportunity to guide water management, other countries have employed scientific panels to recommend environmental flows. DRIFT and its fish component compare favourably with recommended best practice for Australian scientific panel assessments of the flow requirements of river ecosystems. The risks associated with use of scientific panel approaches are discussed and minimum data sets and standards are recommended for the conduct of a DRIFT fish assessment. DRIFT and related frameworks represent the second level in a three‐tiered hierarchy of environmental flow methods. They can provide environmental flow recommendations of far greater scientific resolution than hydrological methods by integrating many types of information on the responses of riverine biota to flow modifications. However, DRIFT should only be applied within an adaptive management framework where there is a genuine commitment to the generation and use of new knowledge derived from monitoring and research. Copyright © 2003 John Wiley & Sons, Ltd.
Lipid classes and fatty acid composition of the eggs of some Australian fish
Publisher: Elsevier BV
Date: 1990
Gut content- and stable isotope-derived diets of four commercially and recreationally important fish species in two intermittently open estuaries
Publisher: CSIRO Publishing
Date: 2007
DOI: 10.1071/MF06157
Abstract: Despite remaining closed for variable periods, intermittently open estuaries provide habitat for estuarine and marine fish species of commercial and recreational value. To better understand how these systems trophically support their fish assemblages, the diets of four valued fish species, namely Acanthopagrus australis, Platycephalus fuscus, Sillago ciliata and Mugil cephalus, were examined in two intermittently open estuaries in New South Wales, Australia. Fish diets were determined using both gut contents and stable isotope analyses because the different temporal resolutions afforded by these methods can provide insight into the flexibility of fish diets. Stable isotope signatures of prey and fish proved to be particularly useful in analyses of the diets of M. cephalus and P. fuscus, because these species consume large quantities of unidentifiable organic matter and have high incidences of empty guts respectively. Diet reconstructions across methods were generally consistent for A. australis, but differed substantially for S. ciliata, with fewer prey taxa identified in the guts than expected. This result suggests that in idual S. ciliata switch between local resources on the basis of their fluctuating temporal availability. Trophic flexibility, coupled with broad physicochemical tolerances, enables these species to flourish in the challenging environment of intermittently open estuaries.
Ge/BaF2 thin-films for surface micromachined mid-wave and long-wave infrared reflectors
Publisher: SPIE-Intl Soc Optical Eng
Date: 04-01-2022
Numerical analysis of fluctuation phenomena in HOT HgCdTe barrier detectors
Publisher: IEEE
Date: 12-2014
Ultrathin tunable terahertz absorbers based on electrostatically actuated metamaterial
Publisher: SPIE
Date: 09-10-2019
DOI: 10.1117/12.2534282
Multiscale effects of flow regime and habitat and their interaction on fish assemblage structure in eastern Australia
Publisher: Canadian Science Publishing
Date: 10-2007
DOI: 10.1139/F07-108
Abstract: We examine the multiscale influence of environmental and hydrological features of the riverine landscape on spatial and temporal variation in fish assemblages in eastern Australia. Multiresponse artificial neural network models provided accurate predictions of fish assemblages in the Mary River based on species presence–absence data (mean Bray–Curtis similarity between predicted and observed composition = 84%) but were less accurate when based on species relative abundance or biomass (mean similarity = 62% and 59%, respectively). Landscape- and local-scale habitat variables (e.g., catchment area and riparian canopy cover) and characteristics of the long-term flow regime (e.g., variability and predictability of flows) were more important predictors of fish assemblages than variables describing the short-term history of hydrological events. The relative importance of these variables was broadly similar for predicting species occurrence, relative abundance, or biomass. The transferability of the Mary River predictive models to the nearby Albert River was high for species presence–absence (i.e., closer match between predicted and observed data) compared with species abundances or biomass. This suggests that the same landscape-scale features are important determinants of distribution of in idual species in both rivers but that interactions between landscape, hydrology, and local habitat features that collectively determine abundance and biomass may differ.
The effects of introduced tilapias on native biodiversity
Publisher: Wiley
Date: 2005
DOI: 10.1002/AQC.699
FISH BODY CONDITION AND RECRUITMENT RESPONSES TO ANTECEDENT FLOWS IN DRYLAND RIVERS ARE SPECIES AND RIVER SPECIFIC
Publisher: Wiley
Date: 07-08-2014
DOI: 10.1002/RRA.2797
Conservation biology and management of the endangered Oxleyan pygmy perch Nannoperca oxleyana in Australia
Publisher: Inter-Research Science Center
Date: 23-05-2012
DOI: 10.3354/ESR00414
When trends intersect: The challenge of protecting freshwater ecosystems under multiple land use and hydrological intensification scenarios
Publisher: Elsevier BV
Date: 11-2014
DOI: 10.1016/J.SCITOTENV.2015.03.127
Abstract: Intensification of the use of natural resources is a world-wide trend driven by the increasing demand for water, food, fibre, minerals and energy. These demands are the result of a rising world population, increasing wealth and greater global focus on economic growth. Land use intensification, together with climate change, is also driving intensification of the global hydrological cycle. Both processes will have major socio-economic and ecological implications for global water availability. In this paper we focus on the implications of land use intensification for the conservation and management of freshwater ecosystems using Australia as an ex le. We consider this in the light of intensification of the hydrologic cycle due to climate change, and associated hydrological scenarios that include the occurrence of more intense hydrological events (extreme storms, larger floods and longer droughts). We highlight the importance of managing water quality, the value of providing environmental flows within a watershed framework and the critical role that innovative science and adaptive management must play in developing proactive and robust responses to intensification. We also suggest research priorities to support improved systemic governance, including adaptation planning and management to maximise freshwater bio ersity outcomes while supporting the socio-economic objectives driving land use intensification. Further research priorities include: i) determining the relative contributions of surface water and groundwater in supporting freshwater ecosystems ii) identifying and protecting freshwater bio ersity hotspots and refugia iii) improving our capacity to model hydro-ecological relationships and predict ecological outcomes from land use intensification and climate change iv) developing an understanding of long term ecosystem behaviour and v) exploring systemic approaches to enhancing governance systems, including planning and management systems affecting freshwater outcomes. A major policy challenge will be the integration of land and water management, which increasingly are being considered within different policy frameworks.
Fish assemblage patterns across a gradient of flow regulation in an Australian dryland river system
Publisher: Wiley
Date: 02-2011
DOI: 10.1002/RRA.1345
Large-Area MEMS Tunable Fabry-Perot Filters for Multi/Hyperspectral Infrared Imaging
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 03-2017
TEMPORARY RIVERS: LINKING ECOHYDROLOGY, ECOLOGICAL QUALITY AND RECONCILIATION ECOLOGY
Publisher: Wiley
Date: 29-08-2014
DOI: 10.1002/RRA.2831
Widespread omnivory and low temporal and spatial variation in the diet of fishes in a hydrologically variable northern Australian river
Publisher: Wiley
Date: 24-06-2010
DOI: 10.1111/J.1095-8649.2010.02712.X
Abstract: This article examines the trophic ecology of freshwater fishes (22 species in 15 families) in a wet and dry tropical Australian river of high intra-annual and interannual hydrological variability. Seven major trophic groups were identified by cluster analysis however, four food items (filamentous algae, chironomid larvae, Trichoptera larvae and Ephemeroptera nymphs) comprised almost half of the average diet of all species. The influence of species, fish size, spatial effects and temporal effects on food use was investigated using redundancy analysis. Size, time and space accounted for little of the perceived variation. Ontogenetic changes in diet were minor and limited to a few large species. Spatial variation in trophic composition of the fish assemblages reflected the effects of the Burdekin Falls and dam, a major geographic barrier, on species distributions. Little spatial variation in diet was detected after accounting for this biogeographical effect. Temporal variations in flow, although marked, had little effect on variations in fish diet composition due to the low temporal ersity of food resources in physically monotonous sand and gravel channels. Species identity accounted for<50% of the observed variation in food choice omnivory and generalism were pronounced. The aquatic food web of the Burdekin River appears simple, supported largely by autochthonous production (filamentous and benthic microalgae, and to some extent, aquatic macrophytes). Allochthonous food resources appear to be unimportant. The generalist feeding strategies, widespread omnivory and absence of pronounced trophic segregation reported here for Burdekin River fishes may be common to variable and intermittent rivers of subtropical and tropical northern Australia with similar fish communities and may be a general feature of rivers of low habitat ersity and characterized by flow regimes that vary greatly both within and between years.
The impact of tourism on dune lakes on Fraser Island, Australia
Publisher: Wiley
Date: 03-2003
Capturing the Impulse Response of a Second Order System
Publisher: IEEE
Date: 12-2014
Fish larvae, growth and biomass relationships in an Australian arid zone river: Links between floodplains and waterholes
Publisher: Wiley
Date: 16-08-2007
Allochthonous and autochthonous carbon sources for fish in floodplain lagoons of an Australian dryland river
Publisher: Springer Science and Business Media LLC
Date: 10-09-2010
Subtle ‘boom and bust’ response of Macquaria ambigua to flooding in an Australian dryland river
Publisher: Springer Science and Business Media LLC
Date: 16-07-2011
An Outdoor Replicated Artificial Stream System: Design, Operating Conditions, and Initial Invertebrate Colonization
Publisher: Elsevier BV
Date: 03-1994
Abstract: The design and operating conditions of an outdoor replicated stream system are described. The facility is composed of a long inlet stream, a header weir which erts inflowing water to six artificial stream channels (each 45 m long and 40 cm wide), a settlement pond at the end of the channels, and an outlet stream which erts the water back to an irrigation channel. Flow regulation is achieved by "V-notched" gates at the head of each stream and depth by a second set of gates at the end of each stream. Physicochemical conditions were monitored over a 260-day period and even though significant temporal variation was detected, little between-stream variation was observed for most parameters. Small, but significant, between-stream differences in dissolved oxygen and pH were detected but were attributed to s ling procedure rather than real between-stream differences. A relatively rich invertebrate fauna colonized the streams. Invertebrate densities increased rapidly after initiation of flow and stabilized after 38 days. Chironomoid midge larvae were numerically the most important taxa, although the proportion of total density contributed by this group changed significantly with time. Taxon richness, chironomid taxon richness, ersity, and eveness also increased with time until a stable point was reached after 90 days of flow. No significant between-stream difference in any of these parameters was detected suggesting that colonization dynamics were similar in each stream.
Crystallization of bismuth iron garnet thin films using capacitively coupled oxygen plasmas
Publisher: AIP Publishing
Date: 28-01-2020
DOI: 10.1063/1.5117337
Abstract: It is demonstrated for the first time that amorphous bismuth iron garnet films can be crystallized within capacitively coupled oxygen plasmas at temperatures approximately 100 °C lower than required using conventional thermal annealing. We characterize the plasma optical emissions at high pressures (2 Torr–5 Torr) and high rf powers (500 W–800 W) and show that film crystallization is nevertheless related to thermal conditions generated in the plasma. It is demonstrated that these thermal conditions are related to the concentration of the dominant oxygen species O and O+ in the plasma, which, in turn, are a function of the rf power and pressure. The plasma treated garnet Faraday rotation and optical transmission are shown to be comparable with conventional oven or rapid thermal annealing.
People need freshwater biodiversity
Publisher: Wiley
Date: 08-02-2023
DOI: 10.1002/WAT2.1633
Abstract: Freshwater bio ersity, from fish to frogs and microbes to macrophytes, provides a vast array of services to people. Mounting concerns focus on the accelerating pace of bio ersity loss and declining ecological function within freshwater ecosystems that continue to threaten these natural benefits. Here, we catalog nine fundamental ecosystem services that the biotic components of indigenous freshwater bio ersity provide to people, organized into three categories: material (food health and genetic resources material goods), non‐material (culture education and science recreation), and regulating (catchment integrity climate regulation water purification and nutrient cycling). If freshwater bio ersity is protected, conserved, and restored in an integrated manner, as well as more broadly appreciated by humanity, it will continue to contribute to human well‐being and our sustainable future via this wide range of services and associated nature‐based solutions to our sustainable future. This article is categorized under: Human Water Value of Water Water and Life Nature of Freshwater Ecosystems Science of Water Water and Environmental Change
The Effects of a Pulsed Application of Chlorpyrifos on Macroinvertebrate Communities in an Outdoor Artificial Stream System
Publisher: Elsevier BV
Date: 04-1994
Abstract: The results of an experiment examining the effects of pulsed application of a pesticide, chlorpyrifos, in an outdoor replicated artificial stream system are described. Two levels of chlorpyrifos were used, 0.1 microgram.liter-1 (low dose) and 5.0 micrograms.liter-1 (high dose), and applied for 6 hr. Low-dose streams showed little impact from the treatment and were indistinguishable from control streams. Significant reductions in invertebrate density occurred in the high-dose streams and were mainly due to reductions in density of chironomid larvae. There were no significant reductions in taxon richness associated with the treatments indicating no localized extinctions of species. Diversity measures were insensitive to the changes observed in the streams. Ordination and classification procedures were more illuminating and indicated that the major effect of pesticide application was to interfere with the normal pattern of community change occurring within the system. Recovery following treatment was rapid. The results are discussed with reference to the use of indicator species and biological monitoring strategies intended to identify human-mediated disturbance.
Fish assemblages of an Australian dryland river: Abundance, assemblage structure and recruitment patterns in the Warrego River, Murray-Darling Basin
Publisher: CSIRO Publishing
Date: 2006
DOI: 10.1071/MF06025
Abstract: Fish in dryland rivers must cope with extreme variability in hydrology, temperature and other environmental factors that ultimately have a major influence on their patterns of distribution and abundance at the landscape scale. Given that fish persist in these systems under conditions of high environmental variability, dryland rivers represent ideal systems to investigate the processes contributing to and sustaining fish bio ersity and recruitment in variable environments. Hence, spatial and temporal variation in fish assemblage structure was examined in 15 waterholes of the Warrego River between October 2001 and May 2003. Fish assemblages in isolated waterholes were differentiated at the end of the dry 2001 winter but were relatively similar following high summer flows in January 2002 as a consequence of high hydrological connectivity among waterholes. Small, shallow waterholes supported more species and higher abundances than large-deep waterholes. Large, deep waterholes provided important refuge for large-bodied fish species such as adult yellowbelly, Macquaria ambigua, and the eel-tailed catfish, Tandanus tandanus. Recruitment patterns of bony bream (Nematalosa erebi), Hyrtl’s tandan (Neosilurus hyrtlii) and yellowbelly were associated with high flow events and backwater inundation however recruitment of yellowbelly and bony bream was also evident following a zero-flow period. Departures from typical flood-induced seasonal spawning patterns may reflect opportunistic spawning behaviours appropriate to the erratic patterns of flooding and dry spells in dryland rivers.
Spatial and temporal variation in fish assemblage structure in the Mary River, south-eastern Queensland: the influence of habitat structure
Publisher: Springer Science and Business Media LLC
Date: 08-1993
DOI: 10.1007/BF00005204
Multi-scale environmental factors explain fish losses and refuge quality in drying waterholes of Cooper Creek, an Australian arid-zone river
Publisher: CSIRO Publishing
Date: 2010
DOI: 10.1071/MF09096
Abstract: Many rivers experience intermittent flows naturally or as a consequence of water abstraction. Climate change is likely to exacerbate flow variability such that dry spells may become more common. It is important to understand the ecological consequences of flow intermittency and habitat fragmentation in rivers, and to identify and protect habitat patches that provide refugia for aquatic biota. This paper explores environmental factors influencing dry season fish losses from isolated waterbodies in Cooper Creek, an unregulated arid-zone river in the Lake Eyre Basin, Australia. Multivariate ordination techniques and classification and regression trees (CART) were used to decompose species–environment relationships into a hierarchically structured data set, and to determine factors explaining changes in fish assemblage structure and species losses over a single dry season. Canonical correspondence analysis (CCA) explained 74% of fish assemblage change in terms of waterhole morphology (wetted perimeter, depth), habitat structure (bench development, off-take channels), waterhole quality (eroded banks, gross primary production), the size of surrounding floodplains and the relative isolation of waterholes. Classification trees for endemic and restricted species reaffirmed the importance of these waterhole and floodplain variables as drivers of fish losses. The CCA and CART models offer valuable tools for identification of refugia in Cooper Creek and, possibly, other dryland rivers.
Is fish biomass in dryland river waterholes fuelled by benthic primary production after major overland flooding?
Publisher: Elsevier BV
Date: 05-2015
Atomic force microscopy with integrated on-chip interferometric readout
Publisher: Elsevier BV
Date: 10-2019
DOI: 10.1016/J.ULTRAMIC.2019.05.011
Abstract: The most common readout technique used in atomic force microscopy (AFM) is based on optical beam deflection (OBD), which relies on monitoring deflection of the cantilever probe by measuring the position of the laser beam reflected from the free end of the AFM cantilever. Although systems using the OBD readout can achieve subnanometre displacement resolution and video rate imaging speeds, its main limitation is size, which is difficult to minimise, thus limiting multiprobe imaging capability. Currently, system miniaturisation has been accommodated by adopting on-chip electrical readout solutions, often at the expense of measurement sensitivity. To date, no cost-effective AFM readout solution exists without sacrificing either measurement sensitivity, system miniaturisation, or multiprobe array scalability. In this paper we present an AFM probe with integrated on-chip optical interferometric readout based on silicon photonics. Our AFM probe combines the advantages of subnanometre resolution of optical readouts with on-chip miniaturisation. The adopted approach determines deflection of the cantilever using an integrated on-chip photonics waveguide by monitoring the separation between the sensing cantilever and an interrogating grating. The implemented methodology provides ultimate interferometric resolution and sensitivity, on-chip miniaturisation, and array scalability, which makes possible ultrafast multiprobe-array AFM imaging. Using a Digital Instruments D3000 AFM retrofitted with our cantilever probe and integrated readout, we report sub-nanometre AFM topography images obtained on reference s les. We demonstrate RMS static AFM noise level of 19 pm, outperforming the operation of this system in its standard, optical beam deflection configuration (51 pm). The noise spectrum measurements of our probe indicate that the integrated readout is shot noise limited, achieving a deflection noise density (DND) of 36fm/Hz.
Uniform Dispersion of Lanthanum Hexaboride Nanoparticles in a Silica Thin Film: Synthesis and Optical Properties
Publisher: American Chemical Society (ACS)
Date: 19-10-2012
DOI: 10.1021/AM301481J
Abstract: Silica thin films containing uniformly dispersed lanthanum hexaboride (LaB₆) nanoparticles have been prepared by spin-coating a sol-gel silica solution containing cetyltrimethyl ammonium bromide (CTAB)-stabilized LaB₆ nanoparticles onto a glass substrate followed by a standard heat treatment. The production of this thin film involved three steps: (i) a CTAB-stabilized LaB₆ nanoparticle dispersion was prepared in water and then dried, (ii) the dried nanoparticles were redispersed in a small amount of water and mixed with tetraethoxyorthosilane (TEOS), ethanol, and a little acid to initiate the sol-gel reaction, and (iii) this reaction mixture was spun to produce a thin film and then was annealed. A range of techniques such as zeta potential, laser sizing, energy-filtered transmission electron microscopy (EFTEM), scanning TEM (STEM), scanning electron microscopy (SEM), and energy dispersive X-ray spectrum (EDS) were employed to characterize the particle's size, elemental composition, and stability and the optical properties of silica thin films with LaB₆ nanoparticles. On the basis of the optical transmittance and reflectance spectra of an annealed silica thin film with LaB₆ nanoparticles, the annealed thin films clearly showed positive absorption of radiation in the near infrared (NIR) region meeting a main objective of this study. A potential optical micro-electromechanical sensing system in the NIR range can be realized on the basis of this silica thin film with LaB₆ nanoparticles.
Reproduction in three species of rainbowfish (Melanotaeniidae) from rainforest streams in northern Queensland, Australia
Publisher: Wiley
Date: 06-2001
Suspended Large-Area MEMS-Based Optical Filters for Multispectral Shortwave Infrared Imaging Applications
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 08-2015
Australia's biodiversity conservation strategy 2010-2020: Scientists' letter of concern
Publisher: Wiley
Date: 31-07-2009
Reproductive biology, growth and age composition of the introducedOreochromis mossambicus (Cichlidae) in two reservoirs, Brisbane, Australia
Publisher: Springer Science and Business Media LLC
Date: 08-1986
DOI: 10.1007/BF00842980
Australian lungfish, Neoceratodus forsteri, threatened by a new dam
Publisher: Springer Science and Business Media LLC
Date: 05-09-2008
Preparation and characterization of cerium substituted bismuth dysprosium iron garnets for magneto-optic applications
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 07-2016
Microcantilevers as a Platform for the Detection of Hydrogen
Publisher: IEEE
Date: 12-2014
Do climatic or institutional factors drive seasonal patterns of tourism visitation to protected areas across diverse climate zones in eastern Australia?
Publisher: Informa UK Limited
Date: 05-2011
Large-area narrowband Fabry–Pérot interferometers for long-wavelength infrared spectral sensing
Publisher: SPIE-Intl Soc Optical Eng
Date: 19-05-2022
Species richness and spatial variation in fish assemblage structure in two rivers of the Wet Tropics of northern Queensland, Australia
Publisher: Springer Science and Business Media LLC
Date: 02-1995
DOI: 10.1007/BF00001996
Flow-ecology relationships: Closing the loop on effective environmental flows
Publisher: CSIRO Publishing
Date: 2014
DOI: 10.1071/MF13110
Abstract: Providing flows for biota and environmental processes is a challenging water management issue. For society the ability and willingness to allocate water to sustain the environment is increasingly competitive due to escalating demand and as a consequence of climate change. In response, an array of environmental flow (E-flow) methods have developed. Our view is that few E-flows have been implemented and even fewer evaluated in a research and management context. Much of our science effort in E-flows has been directed primarily at method development, with less attention being given to monitoring, evaluation and subsequent revision of E-flow strategies. Our objectives are to highlight the lack of connection between current trends in E-flow literature and theory with assessment of the efficacy and practical application of these methods. Specifically, effective E-flows need to be explicit about flow-ecology relationships to adequately determine the amount and timing of water required. We briefly outline the historical development of E-flows and discuss how serial development of methods and techniques has restricted implementation, evaluation and revision. We highlight areas where methods are lacking, such as incorporation of data on flow-ecology relationships into operational use of E-flow methods. We suggest four initial steps that will improve the applicability, implementation and ultimate success of E-flows.
Nanoindentation of Laterally Overgrown Epitaxial Gallium Nitride
Publisher: Springer Science and Business Media LLC
Date: 04-2012
Characterization of low-temperature bulk micromachining of silicon using an SF6/O2 inductively coupled plasma
Publisher: IOP Publishing
Date: 26-07-2012
Nanoindentation of Hg0.7Cd0.3Se prepared by molecular beam epitaxy
Publisher: Elsevier BV
Date: 12-2022
Extreme flow variability and the ‘boom and bust’ ecology of fish in arid‐zone floodplain rivers: a case history with implications for environmental flows, conservation and management
Publisher: Wiley
Date: 26-04-2011
DOI: 10.1002/ECO.221
Demonstration of a method for detecting MEMS suspended beam height
Publisher: IEEE
Date: 08-2012
Mechanical properties of thermally evaporated germanium (Ge) and barium fluoride (BaF2) thin-films
Publisher: Springer Science and Business Media LLC
Date: 07-01-2022
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