Structure of Water-Based Polymer and Surfactant Lubricant Layers. The aim of this work is to understand the structures formed by mixtures of polymers and surfactant (detergent or soap) on solid surfaces, and especially how this structure affects the performance of the mixed layer as a lubricant. We will investigate a variety of polymer and surfactant molecules and their mixtures, determining the structure directly by atomic force microscopy imaging and measuring the sliding and adhesive forces ....Structure of Water-Based Polymer and Surfactant Lubricant Layers. The aim of this work is to understand the structures formed by mixtures of polymers and surfactant (detergent or soap) on solid surfaces, and especially how this structure affects the performance of the mixed layer as a lubricant. We will investigate a variety of polymer and surfactant molecules and their mixtures, determining the structure directly by atomic force microscopy imaging and measuring the sliding and adhesive forces using the surface force appararus. This will enable us to better understand water-based lubricants and design new lubricating layers.Read moreRead less
Modifying Structure and Properties of Carbon Nanotubes for Device Applications (MWN). The focus of this project is to develop new heteroatom-doped carbon nanotube materials for use in conjugated-polymer composite photovoltaic cells. Synthesis of boron and of nitrogen doped carbon nanotubes (CNTs) by the US researchers will be complemented by ion-implantation post-synthesis of CNTs by the Australian team, to gain a thorough and detailed understanding of how the CNTs can act effectively as both an ....Modifying Structure and Properties of Carbon Nanotubes for Device Applications (MWN). The focus of this project is to develop new heteroatom-doped carbon nanotube materials for use in conjugated-polymer composite photovoltaic cells. Synthesis of boron and of nitrogen doped carbon nanotubes (CNTs) by the US researchers will be complemented by ion-implantation post-synthesis of CNTs by the Australian team, to gain a thorough and detailed understanding of how the CNTs can act effectively as both an electron acceptor and charge transport medium in a conjugated polymer. Outcomes will include fundamental advances in our understanding of charge transport in the composite devices and prototype organic photovoltaic devices of improved efficiency.Read moreRead less
Structure of Adsorbed Surfactant Layers at Ionic Liquid-Air Interfaces. The research conducted in the project will greatly enhance our understanding of the physical properties of ionic liquids, an important new class of designer solvents. Australian researchers will receive advanced training and experience using Sum Frequency Spectroscopy in the laboratory of OI Rutland, and in the use of Neutron Reflection. This project is especially timely with the imminent start-up of the new Australian resea ....Structure of Adsorbed Surfactant Layers at Ionic Liquid-Air Interfaces. The research conducted in the project will greatly enhance our understanding of the physical properties of ionic liquids, an important new class of designer solvents. Australian researchers will receive advanced training and experience using Sum Frequency Spectroscopy in the laboratory of OI Rutland, and in the use of Neutron Reflection. This project is especially timely with the imminent start-up of the new Australian research reactor, OPAL, and will help to seed an active program by Australian researchers at this facility.Read moreRead less
Novel Nanofibre-Templated Nanotubes Prepared by Using ABA Block Copolymers. The aim of this project is to prepare new, highly functional nanomaterials using layer-by-layer assembly of polyelectrolytes on a three-dimensional template. Using this approach, a core-shell fibre is initially prepared by alternate deposition of oppositely charged materials onto an electrospun fibre template. The initial fibre can then be dissolved to give hollow nanotubes. New block copolymers, incorporating both charg ....Novel Nanofibre-Templated Nanotubes Prepared by Using ABA Block Copolymers. The aim of this project is to prepare new, highly functional nanomaterials using layer-by-layer assembly of polyelectrolytes on a three-dimensional template. Using this approach, a core-shell fibre is initially prepared by alternate deposition of oppositely charged materials onto an electrospun fibre template. The initial fibre can then be dissolved to give hollow nanotubes. New block copolymers, incorporating both charged and uncharged domains, will be used in the assembly, in order to design tubes with novel properties. The behaviour of these tubes under a variety of pH and solvent conditions will then be examined, and the tubes characterized using various microscopy techniques.Read moreRead less
Materials World Network: Nanostructured Polymer Templating of Liquid Crystals. Liquid crystals have a range of technological applications, with the most successful being displays used in computers, watches and calculators. These applications are dependent on controlling the interfaces of liquid crystals. This project will combine the areas of liquid crystals and polymer adsorption for the preparation of a new class of intelligent nanomaterials with well-defined properties. These engineered mater ....Materials World Network: Nanostructured Polymer Templating of Liquid Crystals. Liquid crystals have a range of technological applications, with the most successful being displays used in computers, watches and calculators. These applications are dependent on controlling the interfaces of liquid crystals. This project will combine the areas of liquid crystals and polymer adsorption for the preparation of a new class of intelligent nanomaterials with well-defined properties. These engineered materials are of interest in industrial applications, including the development of chemical and biological sensors and drug delivery vehicles. This program also strengthens the ties between two world-class nanotechnology groups, capturing new opportunities in nanostructured materials.Read moreRead less
Biodegradable polymeric microparticles for targeted delivery. The use of microparticles with tuneable physicochemical properties and loading characteristics is of interest in the fields of biomaterials, drug delivery and imaging. Such engineered particles are likely to address problems associated with conventional drugs and drug carriers, including poor disease site selectivity, polymer toxicity, non-biodegradability and free diffusion of drugs throughout the body. These microparticles may provi ....Biodegradable polymeric microparticles for targeted delivery. The use of microparticles with tuneable physicochemical properties and loading characteristics is of interest in the fields of biomaterials, drug delivery and imaging. Such engineered particles are likely to address problems associated with conventional drugs and drug carriers, including poor disease site selectivity, polymer toxicity, non-biodegradability and free diffusion of drugs throughout the body. These microparticles may provide direct advantages to society, including minimally invasive and fast in-vivo diagnostics, localised delivery of drugs and therapeutic agents with increased bioavailability, patient acceptability and reduced healthcare costs.Read moreRead less
Adsorption and recovery of gold thiosulfate using nanoporous carbon. The gold industry is a major export earner for both Australia and the United States. This collaborative project aims to develop an environmentally acceptable, cost effective process for the recovery of gold from thiosulfate leachate. Development of this process will remove one of the barriers to the acceptance of thiosulfate leaching over conventional cyanide extraction, leading to substantial benefits to the gold industry and ....Adsorption and recovery of gold thiosulfate using nanoporous carbon. The gold industry is a major export earner for both Australia and the United States. This collaborative project aims to develop an environmentally acceptable, cost effective process for the recovery of gold from thiosulfate leachate. Development of this process will remove one of the barriers to the acceptance of thiosulfate leaching over conventional cyanide extraction, leading to substantial benefits to the gold industry and the environment. A successful outcome in the research project would also lead to export earnings resulting from technology transfer and an enhanced reputation for high quality research.Read moreRead less
Sonochemical synthesis of nanoparticles for fuel cell applications. The sonochemical synthesis of metal and semiconductor nanoparticles is one of several developing applications of ultrasound. Ultrasonically produced nanoparticles possess a number of specific properties, such as, pronounced catalytic activity. This project aims to ultrasonically synthesize metal nanoparticles and evaluate their suitability for fuel cell applications. The University of Melbourne and the Indiana University Nor ....Sonochemical synthesis of nanoparticles for fuel cell applications. The sonochemical synthesis of metal and semiconductor nanoparticles is one of several developing applications of ultrasound. Ultrasonically produced nanoparticles possess a number of specific properties, such as, pronounced catalytic activity. This project aims to ultrasonically synthesize metal nanoparticles and evaluate their suitability for fuel cell applications. The University of Melbourne and the Indiana University North-West research groups have a strong background and experience in the proposed research field. The outcome of this investigation will provide the basis for gaining other funding (e.g., ARC-NSF), which will establish a more extensive longer term collaboration between the universities.Read moreRead less
Nanostructures of Titanium Dioxide and Titanates by Wet-chemistry. One-dimensional (1D) nanoparticulates of titanium dioxide (TiO2) and titanate synthesized by wet-chemistry approaches are new advanced materials of unusual properties. This project will investigate the formation and phase transition mechanism of these 1D particulates by various techniques. With such knowledge, we can effectively control the morphology on a scale of nanometers, and tailor the energy gap of these materials. This wi ....Nanostructures of Titanium Dioxide and Titanates by Wet-chemistry. One-dimensional (1D) nanoparticulates of titanium dioxide (TiO2) and titanate synthesized by wet-chemistry approaches are new advanced materials of unusual properties. This project will investigate the formation and phase transition mechanism of these 1D particulates by various techniques. With such knowledge, we can effectively control the morphology on a scale of nanometers, and tailor the energy gap of these materials. This will significantly influence the photosemiconductive photocatalytic and lithium ions insertion behaviours of the particles so that advanced materials for solar energy conversion, photocatalysts for decomposing organic pollutants in environment, eletrode materials of lithium batteries can be developed.Read moreRead less
Correlation between surface force and morphology of self-assembled monolayer. As a most potential solid support for biological molecules without denaturing their functions, gold thiol self-assembled monolayers (SAMs) have been studied extensively for surface fabrication. In this project we will prepare functional monolayers using newly synthesized thiol derivatives, evaluate correlation between surface force and surface morphology of the SAMs using the surface forces apparatus, and optimize the ....Correlation between surface force and morphology of self-assembled monolayer. As a most potential solid support for biological molecules without denaturing their functions, gold thiol self-assembled monolayers (SAMs) have been studied extensively for surface fabrication. In this project we will prepare functional monolayers using newly synthesized thiol derivatives, evaluate correlation between surface force and surface morphology of the SAMs using the surface forces apparatus, and optimize the condition to fabricate biological devices such as immune sensors.Read moreRead less