ORCID Profile
0000-0003-4445-3899
Current Organisations
University of Adelaide
,
University of Wollongong
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
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)
Electrochemistry | Physical Chemistry (Incl. Structural) | Macromolecular and Materials Chemistry | Nanotechnology | Condensed Matter Physics | Macromolecular Chemistry Not Elsewhere Classified | Condensed Matter Physics—Electronic And Magnetic Properties; | Biomaterials | Colloid And Surface Chemistry | Chemical Sciences Not Elsewhere Classified | Characterisation Of Macromolecules | Condensed Matter Physics—Structural Properties | Synthesis Of Macromolecules | Optical Physics | Chemical Spectroscopy | Separation Science | Organic Chemical Synthesis | Synthesis of Materials | Electroanalytical Chemistry | Analytical Spectrometry | Manufacturing Engineering Not Elsewhere Classified | Manufacturing Engineering not elsewhere classified | Instruments And Techniques | Data Storage Representations | Functional Materials | Nanotechnology | Membrane Biology | Optics And Opto-Electronic Physics | Analytical Chemistry | Organic Chemistry | Medical Devices | Biomaterials | Biomedical Engineering | Biotechnology Not Elsewhere Classified | Electrochemistry | Industrial Chemistry | Nanomanufacturing | Supramolecular Chemistry | Other Physical Sciences | Macromolecular and Materials Chemistry not elsewhere classified | Materials Engineering Not Elsewhere Classified | Condensed Matter Imaging |
ANZSRC Socio-Economic Objective (SEO)
Chemical sciences | Solar-photoelectric | Expanding Knowledge in Technology | Expanding Knowledge in the Chemical Sciences | Physical sciences | Manufactured products not elsewhere classified | Other | Energy storage | Medical instrumentation | Integrated circuits and devices | Biological sciences | Diagnostics | Renewable energy | Metals (composites, coatings, bonding, etc.) | Manufacturing not elsewhere classified | Scientific instrumentation | Polymeric materials (e.g. paints) | Scientific Instruments | Expanding Knowledge in the Biological Sciences | Other
Related Links
Publications
Characterisation of graphene fibres and graphene coated fibres using capacitively coupled contactless conductivity detector
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5AN02534F
Abstract: The use of capacitively coupled contactless conductivity detection (C 4 D) for the characterisation of thin conductive graphene fibres, graphene composite fibres, and graphene coated fibrous materials is demonstrated for the first time.
Fibronectin and Bovine Serum Albumin Adsorption and Conformational Dynamics on Inherently Conducting Polymers: A QCM-D Study
Publisher: American Chemical Society (ACS)
Date: 22-05-2012
DOI: 10.1021/LA300692Y
Abstract: Quartz crystal microbalance with dissipation monitoring (QCM-D) was employed to characterize the adsorption of the model proteins, bovine serum albumin (BSA) and fibronectin (FN), to polypyrrole doped with dextran sulfate (PPy-DS) as a function of DS loading and surface roughness. BSA adsorption was greater on surfaces of increased roughness and was above what could be explained by the increase in surface area alone. Furthermore, the additional mass adsorbed on the rough films was concomitant with an increase in the rigidity of the protein layer. Analysis of the dynamic viscoelastic properties of the protein adlayer reveal BSA adsorption on the rough films occurs in two phases: (1) arrival and initial adsorption of protein to the polymer surface and (2) postadsorption molecular rearrangement to a more dehydrated and compact conformation that facilitates further recruitment of protein to the polymer interface, likely forming a multilayer. In contrast, FN adsorption was independent of surface roughness. However, films prepared from solutions containing the highest concentration of DS (20 mg/mL) demonstrated both an increase in adsorbed mass and adlayer viscoelasticity. This is attributed to the higher DS loading in the conducting polymer film resulting in presentation of a more hydrated molecular structure indicative of a more unfolded and bioactive conformation. Modulating the redox state of the PPy-DS polymers was shown to modify both the adsorbed mass and viscoelastic nature of FN adlayers. An oxidizing potential increased both the total adsorbed mass and the adlayer viscoelasticity. Our findings demonstrate that modification of polymer physicochemical and redox condition alters the nature of protein-polymer interaction, a process that may be exploited to tailor the bioactivity of protein through which interactions with cells and tissues may be controlled.
Electrohydrodynamic polymerisation of water-soluble poly((4-(3-pyrrolyl))butane sulfonate)
Publisher: Elsevier BV
Date: 05-2000
Asymmetric proliferation with optically active polyanilines
Publisher: Royal Society of Chemistry (RSC)
Date: 2005
DOI: 10.1039/B508286M
Abstract: Thin optically active polyaniline layers have been shown to function as platforms to induce optical activity in polyanilines (containing achiral dopants) that are formed by subsequent electrodeposition.
Computer-aided design and 3-dimensional artificial/convolutional neural network for digital partial dental crown synthesis and validation
Publisher: Springer Science and Business Media LLC
Date: 28-01-2023
DOI: 10.1038/S41598-023-28442-1
Abstract: The current multiphase, invitro study developed and validated a 3-dimensional convolutional neural network (3D-CNN) to generate partial dental crowns (PDC) for use in restorative dentistry. The effectiveness of desktop laser and intraoral scanners in generating data for the purpose of 3D-CNN was first evaluated (phase 1). There were no significant differences in surface area [t-stat(df) = − 0.01 (10), mean difference = − 0.058, P 0.99] and volume [t-stat(df) = 0.357(10)]. However, the intraoral scans were chosen for phase 2 as they produced a greater level of volumetric details (343.83 ± 43.52 mm 3 ) compared to desktop laser scanning (322.70 ± 40.15 mm 3 ). In phase 2, 120 tooth preparations were digitally synthesized from intraoral scans, and two clinicians designed the respective PDCs using computer-aided design (CAD) workflows on a personal computer setup. Statistical comparison by 3-factor ANOVA demonstrated significant differences in surface area ( P 0.001), volume ( P 0.001), and spatial overlap ( P 0.001), and therefore only the most accurate PDCs (n = 30) were picked to train the neural network (Phase 3). The current 3D-CNN produced a validation accuracy of 60%, validation loss of 0.68–0.87, sensitivity of 1.00, precision of 0.50–0.83, and serves as a proof-of-concept that 3D-CNN can predict and generate PDC prostheses in CAD for restorative dentistry.
Comparative displacement study of bilayer actuators comprising of conducting polymers, fabricated from polypyrrole, poly(3,4-ethylenedioxythiophene) or poly(3,4-propylenedioxythiophene)
Publisher: Elsevier BV
Date: 04-2013
Colour tunable electrochromic devices based on PProDOT-(Hx)2 and PProDOT-(EtHx)2 polymers
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3TC31011F
Stabilization of single-wall carbon nanotubes in fully sulfonated polyaniline
Publisher: American Scientific Publishers
Date: 11-2004
DOI: 10.1166/JNN.2004.148
Abstract: The interaction of single wall carbon nanotubes (SWNT) with an aqueous solution of the fully sulfonated polyaniline poly(2-methoxyaniline-5-sulfonic acid) (PMAS) and (+)-1-phenylethylamine (PhEA) has been investigated using spectroscopic methods. UV-vis spectral measurements show that the PMAS backbone undergoes conformational changes upon interaction with both SWNT and PhEA. Partial intercalation of PMAS into SWNTbundles was confirmed by Raman spectroscopy and electron microscopy.
Reversible Photoinduced Electron Transfer in a Ruthenium Poly(2-methoxyaniline-5-sulfonic acid) Composite Film
Publisher: American Chemical Society (ACS)
Date: 24-09-2008
DOI: 10.1021/JP804213R
Abstract: In situ electron spin resonance (ESR) studies have been performed on composite films consisting of a ruthenium tris(bipyridyl) complex and an inherently conducting polymer, poly(2-methoxyaniline-5-sulfonic acid) (PMAS). The composites were investigated under white light irradiation and potential control conditions to probe photoinduced electron transfer between the ruthenium metal center and the conducting polymer. PMAS exhibited a clear ESR signal, characteristic of the presence of mobile single spin polarons within the polymer structure. Irradiation of the PMAS in the presence of the ruthenium metal center resulted in the photo-oxidation of the Ru (2+) to the Ru (3+) state, as a result of which the PMAS ESR signal was replaced by a response typical of the Ru (3+) salt. Upon removal of the illumination, reversible photo switching occurred. This reversibility makes these novel composites promising for applications in areas such as chemical sensors, light switching, and light harvesting devices.
A facile approach to spinning multifunctional conductive elastomer fibres with nanocarbon fillers
Publisher: IOP Publishing
Date: 22-02-2016
X-ray attenuation properties of electrically insulating barytes/epoxy composites
Publisher: Springer Science and Business Media LLC
Date: 1993
DOI: 10.1007/BF00819937
Putting function into fashion: Organic conducting polymer fibres and textiles
Publisher: Springer Science and Business Media LLC
Date: 03-2007
DOI: 10.1007/BF02875782
Life-Saving Threads: Advances in Textile-Based Analytical Devices
Publisher: American Chemical Society (ACS)
Date: 14-01-2019
DOI: 10.1021/ACSCOMBSCI.8B00126
Abstract: Novel approaches that incorporate electrofluidic and microfluidic technologies are reviewed to illustrate the translation of traditional enclosed structures into open and accessible textile based platforms. Through the utilization of on-fiber and on-textile microfluidics, it is possible to invert the typical enclosed capillary column or microfluidic "chip" platform, to achieve surface accessible efficient separations and fluid handling, while maintaining a microfluidic environment. The open fiber/textile based fluidics approach immediately provides new possibilities to interrogate, manipulate, redirect, extract, characterize, and quantify solutes and target species at any point in time during such processes as on-fiber electrodriven separations. This approach is revolutionary in its simplicity and provides many potential advantages not otherwise afforded by the more traditional enclosed platforms.
Solid State Photochemistry of Novel Composites Containing Luminescent Metal Centers and Poly(2-methoxyaniline-5-sulfonic acid)
Publisher: American Chemical Society (ACS)
Date: 05-2009
DOI: 10.1021/JP901808D
Abstract: Steady state luminescence and measurements of the luminescent lifetime as well as cyclic voltammetry have been used to elucidate the mechanism and dynamics of interaction between a luminescent ruthenium metal center and two different fractions of poly(2-methoxyaniline-5-sulfonic acid) (PMAS). The two fractions, high molecular weight (HMWT) PMAS and low molecular weight (LMWT) PMAS oligomer, showed significantly distinctive influences on the luminophore. The HMWT PMAS, confirmed to be an emeraldine salt by its characteristic redox chemistry, greatly impacted the diffusion coefficient of the Ru2+/3+ within the composite film, increasing the diffusion coefficient, DCT, by 2 orders of magnitude. The HMWT PMAS also resulted in quenching of the ruthenium-based emission. Significantly, these results indicate that quenching involves both static and dynamic processes, with the static quenching being the dominant process, suggesting that the metal center and polymer backbone were strongly associated. In stark contrast, the LMWT PMAS did not influence the electrochemical properties of the ruthenium metal center however, it did double the emission observed from the ruthenium metal center. The insensitivity of the luminescence lifetime does suggest that, as with the HMWT PMAS, LWMT PMAS is strongly associated with the ruthenium metal center. The enhanced luminescence may allow for many potential sensor developments based on the luminescent ruthenium metal center, while the HMWT PMAS quenching could be utilized within quenching-based strategies or electrochemical devices.
A new twist: controlled shape-shifting of silver nanoparticles from prisms to discs
Publisher: Royal Society of Chemistry (RSC)
Date: 2009
DOI: 10.1039/B913811K
Wireless bipolar electrode-based textile electrofluidics: towards novel micro-total-analysis systems
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1LC00538C
Abstract: Wireless bipolar electrochemistry on a surface-accessible textile-based electrofluidic 3D construct.
Electrically conductive coatings of nickel and polypyrrole/poly(2-methoxyaniline-5-sulfonic acid) on nylon Lycra® textiles
Publisher: Elsevier BV
Date: 10-2013
Strain-responsive polyurethane/PEDOT:PSS elastomeric composite fibers with high electrical conductivity
Publisher: Wiley
Date: 18-02-2014
Faradaic charge corrected colouration efficiency measurements for electrochromic devices
Publisher: Elsevier BV
Date: 2008
Design of self-assembled TiO2 architectures: Towards hybrid nanotubular interfaces
Publisher: Wiley
Date: 30-01-2014
The impact of insufficient time resolution on dye regeneration lifetime determined using transient absorption spectroscopy
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1CP01217G
Abstract: The impact of insufficient time resolution on regeneration lifetime was elucidated using regeneration lifetimes of a combination of dyes and redox mediators determined by transient absorption (TA) spectrometers with 0.5 ns and 6 ns time resolutions.
The mechanism of conductivity enhancement in poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonic) acid using linear-diol additives: Its effect on electrochromic performance
Publisher: Elsevier BV
Date: 09-2008
Processable Thermally Conductive Polyurethane Composite Fibers
Publisher: Wiley
Date: 04-12-2019
Electrohydrodynamic polymerization of 2-methoxyaniline-5-sulfonic acid
Publisher: Elsevier BV
Date: 09-2000
High-Performance Multifunctional Graphene Yarns: Toward Wearable All-Carbon Energy Storage Textiles
Publisher: American Chemical Society (ACS)
Date: 17-02-2014
DOI: 10.1021/NN406026Z
Abstract: The successful commercialization of smart wearable garments is hindered by the lack of fully integrated carbon-based energy storage devices into smart wearables. Since electrodes are the active components that determine the performance of energy storage systems, it is important to rationally design and engineer hierarchical architectures atboth the nano- and macroscale that can enjoy all of the necessary requirements for a perfect electrode. Here we demonstrate a large-scale flexible fabrication of highly porous high-performance multifunctional graphene oxide (GO) and rGO fibers and yarns by taking advantage of the intrinsic soft self-assembly behavior of ultralarge graphene oxide liquid crystalline dispersions. The produced yarns, which are the only practical form of these architectures for real-life device applications, were found to be mechanically robust (Young's modulus in excess of 29 GPa) and exhibited high native electrical conductivity (2508 ± 632 S m(-1)) and exceptionally high specific surface area (2605 m(2) g(-1) before reduction and 2210 m(2) g(-1) after reduction). Furthermore, the highly porous nature of these architectures enabled us to translate the superior electrochemical properties of in idual graphene sheets into practical everyday use devices with complex geometrical architectures. The as-prepared final architectures exhibited an open network structure with a continuous ion transport network, resulting in unrivaled charge storage capacity (409 F g(-1) at 1 A g(-1)) and rate capability (56 F g(-1) at 100 A g(-1)) while maintaining their strong flexible nature.
Electronic interactions within composites of polyanilines formed under acidic and alkaline conditions. Conductivity, ESR, Raman, UV-vis and fluorescence studies
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C0CP00699H
Abstract: The properties of two forms of polyaniline (PAni) synthesised under acidic and basic conditions have been investigated both in idually and as combined complexes. The PAni polymerised within alkaline media was redox inactive and non-conducting while the PAni emeraldine salt (ES) was electroactive and conducting. Raman, electron spin resonance, UV-Vis and fluorescence spectroscopies were used to monitor the changes in electronic properties of these conducting polymer composites. Solution cast films of alkaline synthesised (A-PAni) with the PAni ES resulted in an increase in the high spin polaron population suggesting that it acts as a pseudodopant. The ability of the A-PAni to increase and maintain the population of the polaron charge carrier was confirmed by UV-vis and Raman spectroscopy. Significantly, the presence of the A-PAni in PAni ES helped to sustain higher electrical conductivities at loading levels that were well below the percolation threshold of an insulating polystyrene sulfonate polymeric oligomer model. Fluorescence studies indicated that the A-PAni was fluorescent. However, mixtures of A-PAni with the PAni ES resulted in quenching of the A-PAni emission. The quenching process was observed to involve both static and dynamic processes, with the static quenching being dominant. These results suggest that the two polymers are strongly associated with each other when in the solid state. In stark contrast, the alkaline synthesized PAni did not influence the electrochemical properties of the emeraldine salt. These results deviate significantly from the expected outcome of the addition of an insulating A-PAni additive and highlight the unusual interactions occurring between PAni and its alkaline analogue.
One-Step Wet-Spinning Process of Poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate) Fibers and the Origin of Higher Electrical Conductivity
Publisher: Wiley
Date: 18-07-2011
Inherently conducting polymer nanostructures
Publisher: American Scientific Publishers
Date: 10-2002
DOI: 10.1166/JNN.2002.142
Knitted Strain Sensor Textiles of Highly Conductive All-Polymeric Fibers
Publisher: American Chemical Society (ACS)
Date: 15-09-2015
Abstract: A scaled-up fiber wet-spinning production of electrically conductive and highly stretchable PU/PEDOT:PSS fibers is demonstrated for the first time. The PU/PEDOT:PSS fibers possess the mechanical properties appropriate for knitting various textile structures. The knitted textiles exhibit strain sensing properties that were dependent upon the number of PU/PEDOT:PSS fibers used in knitting. The knitted textiles show sensitivity (as measured by the gauge factor) that increases with the number of PU/PEDOT:PSS fibers deployed. A highly stable sensor response was observed when four PU/PEDOT:PSS fibers were co-knitted with a commercial Spandex yarn. The knitted textile sensor can distinguish different magnitudes of applied strain with cyclically repeatable sensor responses at applied strains of up to 160%. When used in conjunction with a commercial wireless transmitter, the knitted textile responded well to the magnitude of bending deformations, demonstrating potential for remote strain sensing applications. The feasibility of an all-polymeric knitted textile wearable strain sensor was demonstrated in a knee sleeve prototype with application in personal training and rehabilitation following injury.
Electrochemical formation of chiral polyaniline colloids codoped with (+)- or (-)-10-camphorsulfonic acid and polystyrene sulfonate
Publisher: American Chemical Society (ACS)
Date: 09-1998
DOI: 10.1021/MA9716239
Exploiting Intermolecular Interactions between Alkyl-Functionalized Redox-Active Molecule Pairs to Enhance Interfacial Electron Transfer
Publisher: American Chemical Society (ACS)
Date: 27-09-2018
DOI: 10.1021/JACS.8B09070
Abstract: The strategies to enhance electron transfer rates between redox-active, light-harvesting molecules attached to semiconductor surfaces and redox mediators in solution by modifying molecular structure are not fully investigated yet. Therefore, the design of molecules with controlled electron transfer rates remains a challenge. The aims of this work are to quantify the effect of long alkyl chain substitution on the electron transfer from cobalt(II/III) tris(2,2'-bipyridine) to organic molecules containing carbazole and thiophene and to demonstrate that alkyl chains can be used to enhance electron transfer between donor-acceptor pairs. To this end, we study the effect of using a combination of donor and acceptor molecules with and without alkyl chains on electron transfer kinetics. Using transient absorption spectroscopy, we show that when only the molecules or the mediators have long alkyl chains, electron transfer is slightly blocked as expected. Counterintuitively, electron transfer is up to 13 times faster when long alkyl chains are attached to both the redox-active molecules and the redox mediators. The faster electron transfer is explained by an alkyl-alkyl chain interaction between the donor/acceptor, leading to the proximity (trapping) of the redox mediators close to the π-conjugated backbone of the molecules. These results suggest that intermolecular interactions can be used to enhance the electron transfer rates significantly even with well-established insulating alkyl chains attached to molecules without changing the electrochemical driving force.
Achieving outstanding mechanical performance in reinforced elastomeric composite fibers using large sheets of graphene oxide
Publisher: Wiley
Date: 13-10-2015
3D textile structures with integrated electroactive electrodes for wearable electrochemical sensors
Publisher: Informa UK Limited
Date: 30-01-2020
Thermally drawn biodegradable fibers with tailored topography for biomedical applications
Publisher: Wiley
Date: 18-10-2020
DOI: 10.1002/JBM.B.34739
Abstract: There is a growing demand for polymer fiber scaffolds for biomedical applications and tissue engineering. Biodegradable polymers such as polycaprolactone have attracted particular attention due to their applicability to tissue engineering and optical neural interfacing. Here we report on a scalable and inexpensive fiber fabrication technique, which enables the drawing of PCL fibers in a single process without the use of auxiliary cladding. We demonstrate the possibility of drawing PCL fibers of different geometries and cross-sections, including solid-core, hollow-core, and grooved fibers. The solid-core fibers of different geometries are shown to support cell growth, through successful MCF-7 breast cancer cell attachment and proliferation. We also show that the hollow-core fibers exhibit a relatively stable optical propagation loss after submersion into a biological fluid for up to 21 days with potential to be used as waveguides in optical neural interfacing. The capacity to tailor the surface morphology of biodegradable PCL fibers and their non-cytotoxicity make the proposed approach an attractive platform for biomedical applications and tissue engineering.
TITAN: a conducting polymer based microfluidic pump
Publisher: IOP Publishing
Date: 09-11-2005
Technical Review : Conducting Polymer Electronics
Publisher: SAGE Publications
Date: 07-1992
DOI: 10.1177/1045389X9200300301
Abstract: Before conducting polymers can be employed in many applications, some of the intrinsic properties of these materials need to be better understood. An overview of the research and development of conducting polymers being undertaken at UTS is presented. Because conducting polymers are difficult to process once fabricated, an understanding of synthesis parameters and the use of synthesis techniques to pro duce conducting polymer films with desired properties is of the upmost importance. Descriptions of the galvanostatic and potentiostatic techniques employed to produce polyheterocyclics are presented. Thermal properties such as thermal diffusivity, ther mal conductivity and specific heat are being investigated. Preliminary results reveal that the thermal diffusivity of polypyrrole is higher than that achieved with traditional polymers. The nature of contacts and junctions with polypyrrole and poly(3-methyl thiophene) are discussed. High work function metals form ohmic junctions with polypyr role while aluminium forms a Schottky barrier with poly(3-methylthiophene). Micro wave studies on polypyrrole films reveal that the microwave transmission and reflection are dependent upon the doping level of the film. Applications of the conducting polymers in data security modules and for light weight electrically conducting wires are also il lustrated.
Development and characterisation of polypyrrole/metal junctions for electronic applications
Publisher: Wiley
Date: 1991
Monolithic actuators from flash-welded polyaniline nanofibers
Publisher: Wiley
Date: 07-01-2008
Processable polyaniline-HCSA/poly(vinyl acetate-co-butyl acrylate) corrosion protection coatings for aluminium alloy 2024-T3: A SVET and Raman study
Publisher: Elsevier BV
Date: 02-2009
Melt polymer drawn single and multi-capillary fibre-based electroosmotic pumps
Publisher: Springer Science and Business Media LLC
Date: 22-05-2022
DOI: 10.1007/S10404-022-02546-Y
Abstract: Microfluidic devices have been employed in micro-analytical systems and microelectronics using inexpensive, customisable fluid-handling automation at the microliter scale. Here we utilise a well-established fibre drawing technique, which offers a range of materials and capillary conformations, that can be utilized within microfluidic devices to control fluid movement via electroosmotic processes to produce a simple electroosmotic pump (EOP). Single capillary EOPs were fabricated from drawn PU capillary fibres with internal diameters ranging from 73 to 200 µm and were shown to be capable of actively transporting a buffer solution using an external driving electric potential. A maximum flow rate of 0.8 ± 0.1 μL/min was achieved for a 73 ± 2 µm diameter PU capillary fibre at an applied potential of 750 V/cm. This flow rate was successfully increased up to 5.3 ± 0.3 μL/min by drawing a multi-capillary array consisting of 4, 5 and 7 capillaries.
Nanomaterial-assisted thread-based isotachophoresis with on-thread solute trapping
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2AN00287F
Abstract: This research describes a nanomaterial-assisted TB-ITP setup for the clean-up, preconcentration, and trapping of alkaloids in biological fluids, followed by their on-thread DESI-MS determination.
Influence of biopolymer loading on the physiochemical and electrochemical properties of inherently conducting polymer biomaterials
Publisher: Elsevier BV
Date: 02-2015
Variables influencing the device-dependent approaches in digitally analysing jaw movement—a systematic review
Publisher: Springer Science and Business Media LLC
Date: 29-12-2022
Colouration efficiency measurements in electrochromic polymers: The importance of charge density
Publisher: Elsevier BV
Date: 08-2007
Gel electrolytes with ionic liquid plasticiser for electrochromic devices
Publisher: Elsevier BV
Date: 04-2011
Wholly printed polypyrrole nanoparticle-based biosensors on flexible substrate
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3TB21378A
Abstract: The development of inkjet printable polypyrrole(PPy)/enzyme bio-ink successfully introduce bio-selectivity of specific bio-moleculars into conducting polymers. This method is suitable for massive industrial biosensor production.
Tuning the electrophoretic separations on a surface-accessible and flexible fibre-based microfluidic devices
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D2AY01714H
Abstract: Electrophoretic separation of charged ions on a textile-braided structure.
Photolithographic patterning of conducting polyaniline films via flash welding
Publisher: Elsevier BV
Date: 07-2010
Factors affecting the electrochemical formation of polypyrrole-nitrate colloids
Publisher: Elsevier BV
Date: 06-1998
Evaluation of the Differences Between Conventional and Digitally Developed Models Used for Prosthetic Rehabilitation in a Case of Untreated Palatal Cleft
Publisher: SAGE Publications
Date: 18-08-2021
Abstract: The virtual cone beam computed tomography–derived 3-dimensional model was compared with the scanned conventional model used in the fabrication of a palatal obturator for a patient with a large palatal defect. A digitally derived 3-dimensional maxillary model incorporating the palatal defect was generated from the patient’s existing cone beam computerized tomography data and compared with the scanned cast from the conventional impression for linear dimensions, area, and volume. The digitally derived cast was 3-dimensionally printed and the obturator fabricated using traditional techniques. Similarly, an obturator was fabricated from the conventional cast and the fit of both final obturator bulbs were compared in vivo. The digitally derived model produced more accurate volumes and surface areas within the defect. The defect margins and peripheries were overestimated which was reflected clinically. The digitally derived model provided advantages in the fabrication of the palatal obturator however, further clinical research is required to refine consistency.
Biocompatibility of Immobilized Aligned Carbon Nanotubes
Publisher: Wiley
Date: 25-02-2011
Abstract: In vivo host responses to an electrode-like array of aligned carbon nanotubes (ACNTs) embedded within a biopolymer sheet are reported. This biocompatibility study assesses the suitability of immobilized carbon nanotubes for bionic devices. Inflammatory responses and foreign-body histiocytic reactions are not substantially elevated when compared to negative controls following 12 weeks implantation. A fibrous capsule isolates the implanted ACNTs from the surrounding muscle tissue. Filamentous nanotube fragments are engulfed by macrophages, and globular debris is incorporated into the fibrous capsule with no further reaction. Scattered leukocytes are observed, adherent to the ACNT surface. These data indicate that there is a minimal local foreign-body response to immobilized ACNTs, that detached fragments are phagocytosed into an inert material, and that ACNTs do not attract high levels of surface fouling. Collectively, these results suggest that immobilized nanotube structures should be considered for further investigation as bionic components.
Determination of the thermal conductivity of polypyrrole over the temperature range 280–335 K
Publisher: Springer Science and Business Media LLC
Date: 09-1993
DOI: 10.1007/BF00361185
Facile Development of a Fiber-Based Electrode for Highly Selective and Sensitive Detection of Dopamine
Publisher: American Chemical Society (ACS)
Date: 30-09-2019
DOI: 10.1021/ACSSENSORS.9B01583
Abstract: A facile one-step method was used to create a selective and sensitive electrode for dopamine (DA) detection based upon a stainless steel (SS) filament substrate and reduced graphene oxide (rGO). The electrode successfully and selectively detects DA in the presence of uric acid and ascorbic acid without the need for a Nafion coating. The proposed electrode is easy to fabricate, low-cost, flexible, and strong. The rGO-SS electrode could also be incorporated into a three-dimensional braided structure enabling DA detection in a two-electrode fiber system. The sensor is an excellent candidate for production of an affordable, robust, and flexible wearable and portable sensor and expands the application of textiles in point of care diagnostic devices.
Electrohydrodynamic synthesis, characterisation and metal uptake studies on polypyrrole colloids stabilised by polyvinylphosphate dopant
Publisher: Elsevier BV
Date: 12-2000
Toward Three‐Dimensional Printed Thermal Conductive Polymeric Composites Using a Binary‐Composite Hybrid Based on Boron Nitride Nanoparticles and Micro‐Diamonds
Publisher: Wiley
Date: 13-09-2023
The influence of poly(2-methoxyaniline-5-sulfonic acid) on the electrochemical and photochemical properties of a highly luminescent ruthenium complex
Publisher: Elsevier BV
Date: 05-2008
3D printing of highly flexible, cytocompatible nanocomposites for thermal management
Publisher: Springer Science and Business Media LLC
Date: 03-01-2021
The Influence of Filler Particles on the Mechanical Properties of Maxillofacial Prosthetic Silicone Elastomers: A Systematic Review and Meta-Analysis
Publisher: MDPI AG
Date: 12-07-2020
Abstract: Although numerous studies have demonstrated the benefits of incorporating filler particles into maxillofacial silicone elastomer (MFPSE), a review of the types, concentrations and effectiveness of the particles themselves was lacking. The purpose of this systematic review and meta-analysis was to review the effect of different types of filler particles on the mechanical properties of MFPSE. The properties in question were (1) tensile strength, (2) tear strength, (3) hardness, and (4) elongation at break. The findings of this study can assist operators, technicians and clinicians in making relevant decisions regarding which type of fillers to incorporate based on their needs. The systematic review was performed according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. A total of 26 original articles from 1970 to 2019 were selected from the databases, based on predefined eligibility criteria by two reviewers. The meta-analyses of nine papers were carried out by extracting data from the systematic review based on scoring criteria and processed using Cochrane Review Manager 5.3. Overall, there were significant differences favoring filler particles when incorporated into MFPSE. Nano fillers (69.23% of all studies) demonstrated superior comparative outcomes for tensile strength (P 0.0001), tear strength (P 0.00001), hardness (P 0.00001) and elongation at break (P 0.00001) when compared to micro fillers (30.76% of all studies). Micro fillers demonstrated inconsistent outcomes in mechanical properties, and meta-analysis of elongation at break argued against (P 0.01) their use. Current findings suggest that 1.5% ZrSiO4, 3% SiO2, 1.5% Y2O3, 2–6% TiO2, 2–2.5% ZnO, 2–2.5% CeO2, 0.5% TiSiO4 and 1% Ag-Zn Zeolite can be used to reinforce MFPSE, and help the materials better withstand mechanical degradation.
Fused filament fabrication 3D printed polylactic acid electroosmotic pumps
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1LC00452B
Abstract: Fused filament fabrication (FFF)-3D printed polylactic acid capillary structure base on “body centre cubic (BCC)” log-pile like filament arrangements utilising the negative print space technique.
Substrate-Dependent Electron-Transfer Rate of Mixed-Ligand Electrolytes: Tuning Electron-Transfer Rate without Changing Driving Force
Publisher: American Chemical Society (ACS)
Date: 22-12-2021
DOI: 10.1021/JACS.0C12050
Electrosynthesis and characterisation of poly(2-methoxyaniline-5-sulfonic acid)-effect of pH control
Publisher: Elsevier BV
Date: 09-2000
Compositional Effects of Large Graphene Oxide Sheets on the Spinnability and Properties of Polyurethane Composite Fibers
Publisher: Wiley
Date: 11-01-0002
Conducting Polymer Electrochemistry in Ionic Liquids.
Publisher: Elsevier BV
Date: 04-2003
Preparation of chiral conducting polymer colloids
Publisher: Elsevier BV
Date: 1997
Optically Active Polymer Carbon Nanotube Composite
Publisher: American Chemical Society (ACS)
Date: 10-11-2005
DOI: 10.1021/JP053025Z
Abstract: A completely soluble optically active polyaniline-multiwalled carbon nanotube composite was investigated by spectroscopic and microscopic techniques. It was found that the polymer's optical activity was retained in the presence of carbon nanotubes. Solutions were found to be easily processable into thin films, which exhibited dendritic structures only in the presence of nanotubes.
Electrohydrodynamic synthesis of polypyrrole coated polyurethane colloidal dispersions using the electrocatalyst Tiron
Publisher: Elsevier BV
Date: 07-2002
Enhanced electrochemical stability of polyaniline in ionic liquids
Publisher: Elsevier BV
Date: 04-2004
Ion effects in REDOX cycling of conducting polymer based electrochromic materials
Publisher: Elsevier BV
Date: 11-2010
Significant Effect of Electronic Coupling on Electron Transfer between Surface-Bound Porphyrins and Co2+/3+ Complex Electrolytes
Publisher: American Chemical Society (ACS)
Date: 09-04-2020
Surface functionalization of low-cost textile-based microfluidics for manipulation of electrophoretic selectivity of charged analytes
Publisher: Springer Science and Business Media LLC
Date: 31-10-2022
DOI: 10.1007/S10404-022-02603-6
Abstract: Textile-based microfluidics offer new opportunities for developing low-cost, open surface-assessable analytical systems for the electrophoretic analysis of complex chemical and biological matrixes. In contrast to electrophoretic fluidic transport in typical chip-based enclosed capillaries where direct access to the s le zone during analysis is a real challenge. Herein, we demonstrate that electrophoretic selectivity could be easily manipulated on these inverted low-cost bespoke textile substrates via a simple surface-functionalization to manipulate, redirect, extract, and characterize charged analytes. This simple approach enables significant improvement in the electrophoretic separation and isotachophoretic (ITP) preconcentration of charged solutes at the surface of open surface-accessible 3D textile constructs. In this work, polyester 3D braided structures have been developed using the conventional braiding technique and used as the electrophoretic substrates, which were modified by dip-coating with polycationic polymers such as chitosan and polyethyleneimine (PEIn). The surface functionalization resulted in the modulation of the electroosmotic flow (EOF) and electrophoretic mobilities of the charged solutes with respect to the unmodified substrates. Chitosan outperformed PEIn in terms of efficient electrophoretic separation and isotachophoretic stacking of an anionic solute. However, PEIn modification resulted in significant suppression of the EOF over a broad range of pH values from 3 to 9 and exhibited fast EOF at acidic pH compared to controlled polyester, which could be promising for the analysis of basic proteins. These findings suggest a great potential for the development of affordable surface-accessible textile-based analytical devices for controlling the specific migration, direction, analysis time, and separation and preconcentration of charged analytes. Graphical abstract
The citrate-mediated shape evolution of transforming photomorphic silver nanoparticles
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/C0CC02580A
Abstract: The photoconversion of photomorphic silver nanoparticles from discs to prisms via citrate mediated growth on the twin plane faces of the nanoparticles is demonstrated. This systematic shape evolution from discs to hexagons and then prisms of increasing aspect ratios is a result of the growth process being confined to specific faces of the growing nanoparticles.
Polymerisation and characterisation of conducting polyaniline nanoparticle dispersions
Publisher: Elsevier BV
Date: 04-2004
Field-Cycling NMR Relaxometry Study of Dynamic Processes in Conducting Polyaniline
Publisher: American Chemical Society (ACS)
Date: 17-10-2008
DOI: 10.1021/JP8034902
Novel Approach toward Electrofluidic Substrates Utilizing Textile-Based Braided Structure
Publisher: American Chemical Society (ACS)
Date: 10-09-2020
Tunable flow rate in textile-based materials utilising composite fibres
Publisher: Informa UK Limited
Date: 22-05-2021
The influence of electrolyte pH on the surface morphology of polypyrrole
Publisher: Elsevier BV
Date: 11-1992
Polyterthiophene as an electrostimulated controlled drug release material of therapeutic levels of dexamethasone
Publisher: Elsevier BV
Date: 05-2010
EPR characterisation of platinum nanoparticle functionalised carbon nanotube hybrid materials
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/B923921A
Abstract: The use of nanostructured carbon materials as electrodes for energy storage and conversion is an expanding area of research in recent years. Herein, platinum nanoparticles have been deposited onto both multi-walled and single-walled carbon nanotubes (CNTs) via a microwave assisted polyol reduction method. This interaction has been probed with electron paramagnetic resonance (EPR) and Raman spectroscopies to elucidate the charge/electron transfer interactions between the Pt nanoparticles and the CNTs. Observed shifts in the g factors of the CNTs are indicative of such an electronic interaction, strongly suggesting the covalent attachment of the nanoparticles to the carboxylic groups on the CNTs, formed during the microwave-assisted reduction process. The Pt decorated CNTs show a dramatic increase in electrochemical behaviour in terms of high reversible capacity and relatively stable cycle performance compared to unmodified CNTs increasing their applicability in energy storage devices. For instance, significant increases in the electrochemical double layer capacitance are observed for the CNT-NP composite electrode.
Graphene oxide dispersions: tuning rheology to enable fabrication
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3MH00144J
Abstract: Ultra-large graphene oxide sheets exhibit unique viscoelastic properties, making them a new class of soft material. We provide fundamental insights enabling development of various fabrication techniques utilizing this 2D material.
Clinical machine learning in parafunctional and altered functional occlusion: A systematic review
Publisher: Elsevier BV
Date: 02-2023
Three-Dimensional Printing of Abrasive, Hard, and Thermally Conductive Synthetic Microdiamond–Polymer Composite Using Low-Cost Fused Deposition Modeling Printer
Publisher: American Chemical Society (ACS)
Date: 09-01-2019
Abstract: A relative lack of printable materials with tailored functional properties limits the applicability of three-dimensional (3D) printing. In this work, a diamond-acrylonitrile butadiene styrene (ABS) composite filament for use in 3D printing was created through incorporation of high-pressure and high-temperature (HPHT) synthetic microdiamonds as a filler. Homogenously distributed diamond composite filaments, containing either 37.5 or 60 wt % microdiamonds, were formed through preblending the diamond powder with ABS, followed by subsequent multiple fiber extrusions. The thermal conductivity of the ABS base material increased from 0.17 to 0.94 W/(m·K), more than five-fold following incorporation of the microdiamonds. The elastic modulus for the 60 wt % microdiamond containing composite material increased by 41.9% with respect to pure ABS, from 1050 to 1490 MPa. The hydrophilicity also increased by 32%. A low-cost fused deposition modeling printer was customized to handle the highly abrasive composite filament by replacing the conventional (stainless-steel) filament feeding gear with a harder titanium gear. To demonstrate improved thermal performance of 3D printed devices using the new composite filament, a number of composite heat sinks were printed and characterized. Heat dissipation measurements demonstrated that 3D printed heat sinks containing 60 wt % diamond increased the thermal dissipation by 42%.
A virtual analysis of the precision and accuracy of 3-dimensional ear casts generated from smartphone camera images
Publisher: Elsevier BV
Date: 10-2022
DOI: 10.1016/J.PROSDENT.2020.12.041
Abstract: The anatomic complexity of the ear challenges conventional maxillofacial prosthetic rehabilitation. The introduction of specialized scanning hardware integrated into computer-aided design and computer-aided manufacturing (CAD-CAM) workflows has mitigated these challenges. Currently, the scanning hardware required for digital data acquisition is expensive and not readily available for prosthodontists in developing regions. The purpose of this virtual analysis study was to compare the accuracy and precision of 3-dimensional (3D) ear models generated by scanning gypsum casts with a smartphone camera and a desktop laser scanner. Six ear casts were fabricated from green dental gypsum and scanned with a laser scanner. The resultant 3D models were exported as standard tessellation language (STL) files. A stereophotogrammetry system was fabricated by using a motorized turntable and an automated microcontroller photograph capturing interface. A total of 48 images were captured from 2 angles on the arc (20 degrees and 40 degrees from the base of the turntable) with an image overlap of 15 degrees, controlled by a stepper motor. Ear 1 was placed on the turntable and captured 5 times with smartphone 1 and tested for precision. Then, ears 1 to 6 were scanned once with a laser scanner and with smartphones 1 and 2. The images were converted into 3D casts and compared for accuracy against their laser scanned counterparts for surface area, volume, interpoint mismatches, and spatial overlap. Acceptability thresholds were set at 0.70 for spatial overlap. The test for smartphone precision in comparison with that of the laser scanner showed a difference in surface area of 774.22 ±295.27 mm Smartphone cameras used to capture 48 overlapping gypsum cast ear images in a controlled environment generated 3D models parametrically similar to those produced by standard laser scanners.
Microstructures of conducting polymers: Patterning and actuation study
Publisher: Elsevier BV
Date: 08-2013
Conducting Polymers: Properties and Applications
Publisher: SAGE Publications
Date: 09-1994
DOI: 10.1177/1045389X9400500501
Abstract: There are over 100 conducting polymers which have been synthesised by chemists with a wide range of specific electrical conductivities. Many of these polymers are suitable for elec tronic device fabrication. Semi-conducting and conducting polymers have potential for application in several areas. In this paper electronic and microwave properties are explored. Fabrication of elec tronic and microwave devices can be achieved with these special polymers which are not possible with say silicon or gallium arsenide. Wide area flexible electronic junctions can be fabricated. Polymers have low density, hence conductivity to weight ratio can be higher than metals. Optical transparency together with electrical conduction has been achieved. This article presents an overview of the results of investigations undertaken within the Centre for Materials Technology (CMT) in this area over the past 4 years. This includes work on monomer and polymer synthesis, molecular structure-property relationships, electromagnetic shielding, thermal, optical and junction properties.
Asymmetry and rectification in the tunnel current of a nanometer-sized metal-conjugated polymer–metal junction
Publisher: AIP Publishing
Date: 15-04-2000
DOI: 10.1063/1.481252
Abstract: Electron transport processes of a nanometer metal-conjugated polymer–metal tunnel junction have been probed using a scanning tunneling microscope. The tunnel current of the junction shows two effects. The appearance of an asymmetry in the tunnel current indicates that the junction transport mechanism is different from that for which tunneling occurs directly between two metallic electrodes. Thus, understanding of the asymmetry and hence the transport mechanism demands a detailed description of the metal–polymer interface. By applying the theories of the metal–semiconductor interface to the tunnel junction, we show the presence of an asymmetric electrostatic potential-energy profile, which, together with the metal-induced gap states in the polymer, gives rise to the observed asymmetry in the tunnel current. In some cases, a threshold of anomalously large currents enhances the current asymmetry to give rise to rectification, indicating carrier excitations and carrier multiplication processes in the junction. Our results show that a detailed description of the interface electronic structure is essential to understanding electron transport in devices based on organic molecules.
Related Organisations
Universiti Sains Malaysia Pusat Pengajian Sains Pergigian
Location: Malaysia
Related Funding Activities
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0237384
Start Date: 2001
End Date: 12-2002
Amount: $156,000.00
Funder: Australian Research Council
View Funded ActivityLinkage - International - Grant ID: LX0668676
Start Date: 07-2006
End Date: 12-2008
Amount: $21,200.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP0211245
Start Date: 2002
End Date: 12-2006
Amount: $1,545,250.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE120100229
Start Date: 06-2012
End Date: 12-2013
Amount: $250,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE0882613
Start Date: 2008
End Date: 12-2008
Amount: $600,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP0343586
Start Date: 2003
End Date: 12-2007
Amount: $682,275.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP110100591
Start Date: 2011
End Date: 12-2014
Amount: $434,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE0237874
Start Date: 2001
End Date: 12-2002
Amount: $424,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP170102572
Start Date: 06-2017
End Date: 12-2021
Amount: $382,500.00
Funder: Australian Research Council
View Funded ActivityARC Centres Of Excellence - Grant ID: CE0561616
Start Date: 07-2005
End Date: 06-2014
Amount: $19,700,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE0883019
Start Date: 04-2008
End Date: 06-2010
Amount: $150,000.00
Funder: Australian Research Council
View Funded ActivitySpecial Research Initiatives - Grant ID: SR0354588
Start Date: 01-2004
End Date: 12-2003
Amount: $10,000.00
Funder: Australian Research Council
View Funded ActivityDiscovery Projects - Grant ID: DP0666707
Start Date: 2006
End Date: 12-2009
Amount: $429,000.00
Funder: Australian Research Council
View Funded ActivityARC Centres Of Excellence - Grant ID: CE140100012
Start Date: 06-2014
End Date: 06-2021
Amount: $25,000,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE180100175
Start Date: 2018
End Date: 12-2018
Amount: $347,070.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE0453771
Start Date: 2004
End Date: 12-2005
Amount: $148,246.00
Funder: Australian Research Council
View Funded ActivityLinkage Infrastructure, Equipment And Facilities - Grant ID: LE0668510
Start Date: 06-2006
End Date: 04-2007
Amount: $180,240.00
Funder: Australian Research Council
View Funded ActivitySpecial Research Initiatives - Grant ID: SR0354535
Start Date: 2004
End Date: 12-2004
Amount: $10,000.00
Funder: Australian Research Council
View Funded ActivityLinkage Projects - Grant ID: LP0668876
Start Date: 04-2007
End Date: 06-2010
Amount: $875,000.00
Funder: Australian Research Council
View Funded ActivitySpecial Research Initiatives - Grant ID: SR0354640
Start Date: 02-2004
End Date: 03-2005
Amount: $10,000.00
Funder: Australian Research Council
View Funded Activity