Interplay of Microbiological Corrosion and Alloy Microstructure in Failures of Advanced Stainless Steels and their Weldments in Marine Environments. The proposed research program investigates the role of microbiologically-induced corrosion (MIC) on stress corrosion cracking (SCC) of weldments of advanced stainless steels (SS). Extensive premature SCC failures of SS weldments have lately become increasingly significant in Australian marine industry, following the inability of advanced SCC-resista ....Interplay of Microbiological Corrosion and Alloy Microstructure in Failures of Advanced Stainless Steels and their Weldments in Marine Environments. The proposed research program investigates the role of microbiologically-induced corrosion (MIC) on stress corrosion cracking (SCC) of weldments of advanced stainless steels (SS). Extensive premature SCC failures of SS weldments have lately become increasingly significant in Australian marine industry, following the inability of advanced SCC-resistant SS to alleviate failures. Inconsistencies in SCC data call for an improved understanding of the role of MIC on SCC, particularly because recent failure analyses have indicated a profound role of microbiological activity on localised corrosion (viz., pitting) of stainless steels and their weldments, as well as because pitting is known to facilitate SCC initiation.Read moreRead less
Diamond Microneedles for Minimally Invasive Blood Collection. Blood sampling is a routine procedure for medical purposes to determine the physiological and biochemical status of patients. The aim of this project is to develop a reliable microneedle array for a blood collection procedures. Micro-scale needles for low-volume perforated blood samples are highly desirable due to its minimal invasiveness and painlessness. The miniaturization of sampling platforms driven by microneedles has the poten ....Diamond Microneedles for Minimally Invasive Blood Collection. Blood sampling is a routine procedure for medical purposes to determine the physiological and biochemical status of patients. The aim of this project is to develop a reliable microneedle array for a blood collection procedures. Micro-scale needles for low-volume perforated blood samples are highly desirable due to its minimal invasiveness and painlessness. The miniaturization of sampling platforms driven by microneedles has the potential to shift disease diagnosis and monitoring closer to the point of care. Expected outcomes include the development of synthetic diamond-based microneedles for the potential to greatly benefit society through improved and affordable healthcare and the development of new high-tech industries.Read moreRead less
Improvement in Stress Corrosion Cracking Resistance of Stainless Steels in Environments Conducive to Localized Pitting Damage. Stress corrosion cracking (SCC) represents a serious threat to infrastructure exposed to chloride and caustic environments. The proposed project will characterize the chloride-SCC crack propagation parameters for a super duplex stainless steel, which is the material of construction for vessels for stripping vinyl chloride monomer in a PVC processing plant. Alarmingly hig ....Improvement in Stress Corrosion Cracking Resistance of Stainless Steels in Environments Conducive to Localized Pitting Damage. Stress corrosion cracking (SCC) represents a serious threat to infrastructure exposed to chloride and caustic environments. The proposed project will characterize the chloride-SCC crack propagation parameters for a super duplex stainless steel, which is the material of construction for vessels for stripping vinyl chloride monomer in a PVC processing plant. Alarmingly high numbers the welds (nearly 50%) in the vessel had suffered extensive pitting (which is a well-known SCC initiator) and SCC cracking. For the mitigation measures, the project will also investigate pitting and SCC susceptibility of weldments of alternative varieties of stainless steels, such as Zeron 100.Read moreRead less
Magnetic liquid marbles: a new droplet manipulation technique for channel-free microfluidics. The project will explore the feasibility of developing a new droplet-manipulation strategy by using magnetically responsive liquid marbles capable of hosting various liquid droplets. It will significantly advance the development of a new generation of microfluidic devices: magnetic field-actuated channel-free droplet microfluidics.
Metal-air batteries with improved rate capability and safety for hearing applications. Hearing impairment affects on average 20% of the adult population in western society, with the impact being as high as 50% in older adults. Effective hearing devices require a significant amount of power, supplied by a battery, to support their function. Current batteries require very frequent replacement and represent a significant impediment to advances in the technology. This project will develop improved ....Metal-air batteries with improved rate capability and safety for hearing applications. Hearing impairment affects on average 20% of the adult population in western society, with the impact being as high as 50% in older adults. Effective hearing devices require a significant amount of power, supplied by a battery, to support their function. Current batteries require very frequent replacement and represent a significant impediment to advances in the technology. This project will develop improved energy and power density batteries which will lead to immediate implementation of more powerful signal processing algorithms, making hearing aids much more effective and appealing to the user. This, in turn, will improve recipient compliance and thus the quality of life for those with severe hearing impairment. Read moreRead less
Bio-inspired electro catalysts for gas reduction reactions: towards electrochemical ammonia production under ambient conditions. This project will develop solutions to replace the current energy inefficient method for ammonia production, which are a significant contribution to Greenhouse Gas emissions. A more energy efficient system will be developed from a new class of composite gas-reduction catalysts integrated into functional electrochemical cells.
Electrical arc machining of polycrystalline diamond with a wheel electrode. This project aims to discover new theories to overcome the core challenge in electrical discharge machining of polycrystalline diamond. Diamond materials provide the ultimate performance in cutting difficult-to-machine materials such as titanium alloys which are widely used in the aerospace and biomedical industries. However, the extremely slow erosion speed of electrical discharge machining severely impedes their applic ....Electrical arc machining of polycrystalline diamond with a wheel electrode. This project aims to discover new theories to overcome the core challenge in electrical discharge machining of polycrystalline diamond. Diamond materials provide the ultimate performance in cutting difficult-to-machine materials such as titanium alloys which are widely used in the aerospace and biomedical industries. However, the extremely slow erosion speed of electrical discharge machining severely impedes their applications. The project will use high energy electrical arcs for the fast machining of polycrystalline diamond. The expected outcome is a new approach and breakthroughs in fundamental knowledge that pave the way for developing new electrical machining methods and lead to significant reductions in manufacturing costs.Read moreRead less
New Nanoscale Up-converting Photoluminescent Materials for Passive Safety Visual Systems. The demand for safety and security products is growing as the importance of providing an environment safer from natural, accidental or man-made threats increases in the community. Life safety applications in buildings and work environments as well as trains and planes for example are dependent upon the ability for non-powered passive systems to give efficient visual guidance in dangerous dark and smoke fill ....New Nanoscale Up-converting Photoluminescent Materials for Passive Safety Visual Systems. The demand for safety and security products is growing as the importance of providing an environment safer from natural, accidental or man-made threats increases in the community. Life safety applications in buildings and work environments as well as trains and planes for example are dependent upon the ability for non-powered passive systems to give efficient visual guidance in dangerous dark and smoke filled environments. This project will provide a practical demonstration of the successful implementation of nanotechnology to smaller Australian companies where it will overcome significant drawbacks in current manufacturing and yield new products which are activated in darkness by infrared radiation.Read moreRead less
Boosting photosynthetic efficiency using a plant nanobionics approach. The project aims to improve light capture and enhance electron transport rates using a plant nanobionics approach. Biocompatible plasmonic low-dimensional transition metal oxides with unique optical and electronics properties will be selected as the bioinspired materials. The investigation will focus on developing oxide compounds as artificial antenna, capturing extended optical wavelengths that are not normally available to ....Boosting photosynthetic efficiency using a plant nanobionics approach. The project aims to improve light capture and enhance electron transport rates using a plant nanobionics approach. Biocompatible plasmonic low-dimensional transition metal oxides with unique optical and electronics properties will be selected as the bioinspired materials. The investigation will focus on developing oxide compounds as artificial antenna, capturing extended optical wavelengths that are not normally available to natural plants. Energetic hot electrons excited from plasmonic materials injected into the plant system will further be explored, achieving unprecedented energy conversion from solar to chemical. The anticipated findings will provide a strong base to develop new plant systems with improved photosynthetic efficiency.Read moreRead less
A New Approach to Advanced Steels via Cluster and Precipitate Strengthening. Formation of interphase nanoparticles and clusters is a new approach to increase strength in advanced high strength steels. Exceptionally high strength levels can be achieved in alloys that only have solute clusters by controlling the temperature-time history. However, the exact mechanism for the formation of clusters and precipitates and the cluster strengthening mechanism are not understood, nor do we know how to cont ....A New Approach to Advanced Steels via Cluster and Precipitate Strengthening. Formation of interphase nanoparticles and clusters is a new approach to increase strength in advanced high strength steels. Exceptionally high strength levels can be achieved in alloys that only have solute clusters by controlling the temperature-time history. However, the exact mechanism for the formation of clusters and precipitates and the cluster strengthening mechanism are not understood, nor do we know how to control cluster formation. This project aims to develop a fundamental understanding of the formation of clusters and nanoprecipitates and determine their contribution to strengthening and other mechanical properties using advanced characterisation techniques such as atom probe tomography and electron microscopy.Read moreRead less