Microfluidic device for microbial separation and concentration. This project will enhance Australia's capabilities and presence in the rapidly expanding field of chemical and biological analysis systems on a chip. We will develop and build handheld devices for microbial concentration that will facilitate earlier and easier detection of potentially pathogenic organisms in critical situations such as epidemiological crises or forensics. The portability and ease of operation of our integrated micro ....Microfluidic device for microbial separation and concentration. This project will enhance Australia's capabilities and presence in the rapidly expanding field of chemical and biological analysis systems on a chip. We will develop and build handheld devices for microbial concentration that will facilitate earlier and easier detection of potentially pathogenic organisms in critical situations such as epidemiological crises or forensics. The portability and ease of operation of our integrated microfluidic devices and their increased resilience to blockages make them ideal for use in remote areas and non-laboratory settings. Application areas will include disease detection, microbial contamination in food industries and water quality monitoring.Read moreRead less
Development of Advanced Detection Systems for Accelerator Mass Spectrometry. This project aims to expand significantly the range of isotopes available for accelerator mass spectrometry at the Australian National University to include the ability to detect manganese-53, nickel-59 and uranium-236 to ultra-sensitive concentrations. To achieve this, my extensive experience in fundamental nuclear physics will be exploited to develop a gas-filled magnet for the detection of mangnese-53 and nickel-59, ....Development of Advanced Detection Systems for Accelerator Mass Spectrometry. This project aims to expand significantly the range of isotopes available for accelerator mass spectrometry at the Australian National University to include the ability to detect manganese-53, nickel-59 and uranium-236 to ultra-sensitive concentrations. To achieve this, my extensive experience in fundamental nuclear physics will be exploited to develop a gas-filled magnet for the detection of mangnese-53 and nickel-59, and a time-of-flight detector to detect uranium-236. This project has applications in the topical areas of climate change and nuclear safeguards, as well as applications in the earth sciences and the management of nuclear waste.Read moreRead less
Probing membrane rafts using surface-selective multi-dimensional microscopy. The results of this project will provide fundamental insights into the role played by domains in cell membranes in the regulation of membrane protein function. These insights will create new avenues in the biotechnology industry for development of novel therapeutics aimed at disruption of membrane protein-protein interactions that cause aberant cell signalling in disease states such as cancer.
The role of mechanosensitive (MS) ion channels in magnetoreception. The magnetic field of the Earth has for long been known to influence the behaviour and orientation of a variety of organisms. Experimental study of the magnetic sense has however, been impaired by the lack of a plausible cellular and/or molecular mechanism providing meaningful explanation for detection of magnetic fields by living organisms. Recently, mechanosensitive (MS) ion channels have been implied to play a role in magneto ....The role of mechanosensitive (MS) ion channels in magnetoreception. The magnetic field of the Earth has for long been known to influence the behaviour and orientation of a variety of organisms. Experimental study of the magnetic sense has however, been impaired by the lack of a plausible cellular and/or molecular mechanism providing meaningful explanation for detection of magnetic fields by living organisms. Recently, mechanosensitive (MS) ion channels have been implied to play a role in magnetoreception. Based on our preliminary investigations, which suggest that the activity of bacterial MS channels may be affected by magnetic fields, we propose to study effects of magnetic fields on MS ion channels in Gram-negative bacteria Escherichia coli and Magnetospirillum magnetotacticum. The project promises also to contribute towards better understanding of adverse effects of electromagnetic radiation on human health and towards understanding the mechanisms behind remote magnetic-nanoparticle mediated activation of MS ion channels.Read moreRead less
Quantitative Brain Dynamics. This proposal will benefit Australia through unique and fundamental contributions to understanding brain dynamics via the development of innovative approaches and technologies. It will contribute to the national priority goals of Breakthrough Science, Frontier Technologies, and Promoting an Innovation Culture and Economy. Science outcomes will include improved understanding and probing of brain self-organization, dynamics, and function, including unique contributio ....Quantitative Brain Dynamics. This proposal will benefit Australia through unique and fundamental contributions to understanding brain dynamics via the development of innovative approaches and technologies. It will contribute to the national priority goals of Breakthrough Science, Frontier Technologies, and Promoting an Innovation Culture and Economy. Science outcomes will include improved understanding and probing of brain self-organization, dynamics, and function, including unique contributions to understanding alertness and the foundations of vision. These outcomes will be applied to develop new technologies for brain imaging and monitoring.Read moreRead less
Experiments with Advanced Isolation Systems, Suspension and Test Masses Using ACIGA's High Optical Power Test Facility. This proposal will allow experimental verification of the performcane of of sapphire test masses and their associated isolation and suspension system in ACIGA's high optical power test facility at Gingin. The work will contribute to the worldwide effort to increase the sensitivity of laser interferometers to the level where known sources of gravitational waves can be detected ....Experiments with Advanced Isolation Systems, Suspension and Test Masses Using ACIGA's High Optical Power Test Facility. This proposal will allow experimental verification of the performcane of of sapphire test masses and their associated isolation and suspension system in ACIGA's high optical power test facility at Gingin. The work will contribute to the worldwide effort to increase the sensitivity of laser interferometers to the level where known sources of gravitational waves can be detected at a reasonable rate.Read moreRead less
Probing the function of protein molecular motors on nano-fabricated structures. The function of protein linear molecular motors, which are natural dynamic bio-nano-devices with a ubiquitous importance in multicellular organisms, will be 'probed' with purposefully designed nano-structures fabricated via photo- or Scanning Probe Microscopy Lithography, that is, flat polymeric surfaces with combinatorial combinations of physico-chemistries; and micro/nano-channels and nano-wells with critical dimen ....Probing the function of protein molecular motors on nano-fabricated structures. The function of protein linear molecular motors, which are natural dynamic bio-nano-devices with a ubiquitous importance in multicellular organisms, will be 'probed' with purposefully designed nano-structures fabricated via photo- or Scanning Probe Microscopy Lithography, that is, flat polymeric surfaces with combinatorial combinations of physico-chemistries; and micro/nano-channels and nano-wells with critical dimensions similar to the scale of the probed biomolecules. The project turns 'up-side down' the challenge of invasive nano-probing of biomolecules using it in an engineered manner. The fundamental understanding of linear molecular motors will impact on biomedical science and on the assessment of hybrid natural-artificial dynamic nano-devices.Read moreRead less
Global Gravitational Wave Astronomy. To listen to the universe with gravitational waves needs a global array of gravitational wave observatories, and one of these must be in the southern hemisphere - in Australia. By definitively answering outstanding questions about an Australian gravitational wave observatory - Where should it be? How sensitive? What astronomy will it aid? - we make the case for the international community to help build this observatory, investing hundreds of millions of dolla ....Global Gravitational Wave Astronomy. To listen to the universe with gravitational waves needs a global array of gravitational wave observatories, and one of these must be in the southern hemisphere - in Australia. By definitively answering outstanding questions about an Australian gravitational wave observatory - Where should it be? How sensitive? What astronomy will it aid? - we make the case for the international community to help build this observatory, investing hundreds of millions of dollars in rural Australia and keeping Australia on the cutting edge of all branches of astronomy. As a flagship client of advanced data GRID technologies, we will also shape the growth of Australian knowledge of, and infrastructure for, next-generation communications technologies.Read moreRead less
Characterisation of two-pore domain potassium channels: structure-function studies of the M1-P1 loops of TASK channels. TWIK-related Acid Sensitive K+ (TASK) channels are members of the novel class of two-pore domain potassium channel family. They are potently inhibited by local anaesthetics and have been implicated as having important roles in many pathophysiological conditions such as heart arrythmias, stroke, epilepsy, breast and other cancers. The in depth structural and functional character ....Characterisation of two-pore domain potassium channels: structure-function studies of the M1-P1 loops of TASK channels. TWIK-related Acid Sensitive K+ (TASK) channels are members of the novel class of two-pore domain potassium channel family. They are potently inhibited by local anaesthetics and have been implicated as having important roles in many pathophysiological conditions such as heart arrythmias, stroke, epilepsy, breast and other cancers. The in depth structural and functional characterisation of this class of potassium channels is of great importance as they are interesting targets for new therapeutic developments. Advancement of knowledge in the structure and function of these channels will underpin drug targeting that will aid preventative healthcare, allowing Australians to age well and age productively.Read moreRead less
Electro-active and migratory peptides in lipid bilayers: NMR and biophysical studies. All living things are characterized by the separation of inner space from the surrounding medium by a self-assembling membrane. Selective entry and exit of water, ions and solutes is a defining feature of each type of cell. Some proteins sense the voltage difference across the cell membrane and open or close in response to voltage changes. Others, like bacterial toxins assemble in the membrane as pores, while o ....Electro-active and migratory peptides in lipid bilayers: NMR and biophysical studies. All living things are characterized by the separation of inner space from the surrounding medium by a self-assembling membrane. Selective entry and exit of water, ions and solutes is a defining feature of each type of cell. Some proteins sense the voltage difference across the cell membrane and open or close in response to voltage changes. Others, like bacterial toxins assemble in the membrane as pores, while other peptides migrate across the membrane piggy-backing their peptide cargo. The aim is to understand the molecular mechanisms in examples of these membrane-active peptides and proteins with a view to enabling rational intervention into their operation in situ in normal and disease states.Read moreRead less