Surface engineering of biomaterials for optimal bone bonding characteristics. The ideal bone-implant material is hydroxyapatite. Chemically similar to bone mineral, hydroxyapatite is capable of inducing bone ongrowth. An ideal surface coating for metal hip implants, plasma spraying has been the preferred commercial hydroxyapatite coating technique. Until recently, it was always presumed that the bioactivity of hydroxyapatite resulted from its surface chemistry. However, a recent study has shown ....Surface engineering of biomaterials for optimal bone bonding characteristics. The ideal bone-implant material is hydroxyapatite. Chemically similar to bone mineral, hydroxyapatite is capable of inducing bone ongrowth. An ideal surface coating for metal hip implants, plasma spraying has been the preferred commercial hydroxyapatite coating technique. Until recently, it was always presumed that the bioactivity of hydroxyapatite resulted from its surface chemistry. However, a recent study has shown that the bioactivity of HAp coatings strongly correlates with surface roughness on the scale of bone cells. This project will explore cell-attachment behaviour for hydroxyapatite coatings prepared by plasma spraying compared with engineered surface morphology/chemistry by microlithography and vapour coating.Read moreRead less
Functionally graded fibre-polymer composites: a novel material for spinal disk prostheses. Chronic back pain affects a significant proportion of the population and is primarily caused by failure of the spinal disk. A strong social/economic imperative exists to develop engineering solutions to this problem. This project concerns the development of a novel fibre-polymer functionally graded composite material that mimics the structure of the spinal disk. The spinal disk comprises a soft core (nucle ....Functionally graded fibre-polymer composites: a novel material for spinal disk prostheses. Chronic back pain affects a significant proportion of the population and is primarily caused by failure of the spinal disk. A strong social/economic imperative exists to develop engineering solutions to this problem. This project concerns the development of a novel fibre-polymer functionally graded composite material that mimics the structure of the spinal disk. The spinal disk comprises a soft core (nucleus) and a tough fibrous periphery (annulus). The graded composite approach of this proposal represents a significant advance over spinal fusion, and over the alternative spinal disk protheses in clinical use or in the patent literature.Read moreRead less
Reducing gas and ash corrosion in advanced power generation. Advanced power generation using new coal combustion technologies increases energy efficiency and makes carbon dioxide capture possible, but increases the corrosion problems. This project aims to determine the corrosion behaviour of chromia-scale forming iron- and nickel-base alloys in the presence of deposits (coal ashes and salts) under carbon dioxide rich gas atmospheres. The increased understanding of alloy behaviour in hot corrosiv ....Reducing gas and ash corrosion in advanced power generation. Advanced power generation using new coal combustion technologies increases energy efficiency and makes carbon dioxide capture possible, but increases the corrosion problems. This project aims to determine the corrosion behaviour of chromia-scale forming iron- and nickel-base alloys in the presence of deposits (coal ashes and salts) under carbon dioxide rich gas atmospheres. The increased understanding of alloy behaviour in hot corrosive ashes and gases, will permit more effective materials design and selection leading to more efficient and economic technologies for reliable and low cost carbon capture in energy production, waste-energy conversion and related industries.Read moreRead less
High temperature corrosion induced by multiple secondary oxidants . Heat resisting chromia-forming alloys passivate successfully in clean, dry air at temperatures up to about 950°C. However, this performance is degraded by secondary oxidants (carbon, sulphur, chlorine, water vapour), leading to corrosion failure in important industries. The project aims to investigate the effect of these secondary oxidants on corrosion behaviour of chromia-forming alloys, to identify interactions between multipl ....High temperature corrosion induced by multiple secondary oxidants . Heat resisting chromia-forming alloys passivate successfully in clean, dry air at temperatures up to about 950°C. However, this performance is degraded by secondary oxidants (carbon, sulphur, chlorine, water vapour), leading to corrosion failure in important industries. The project aims to investigate the effect of these secondary oxidants on corrosion behaviour of chromia-forming alloys, to identify interactions between multiple oxidants within the scale, to establish the mechanisms of oxide scale penetration by foreign species, and to evaluate scales on different alloy types. The results will provide a basis for improved design/selection of heat resisting chromia-forming alloys, key to power generation industries.Read moreRead less
Two-dimensional plasmonic heterogeneous nanostructures for photocatalysis. This project aims to design and explore two-dimensional heterogeneous photocatalysts that can convert solar energy into usable chemical energy. This project will investigate the correlation between surface plasmonic resonance and photocatalytic activities on the atomic level. Heterogeneous engineering and in-situ investigation of atomic-level photocatalytic dynamics is expected to yield several new full-solar-spectrum pho ....Two-dimensional plasmonic heterogeneous nanostructures for photocatalysis. This project aims to design and explore two-dimensional heterogeneous photocatalysts that can convert solar energy into usable chemical energy. This project will investigate the correlation between surface plasmonic resonance and photocatalytic activities on the atomic level. Heterogeneous engineering and in-situ investigation of atomic-level photocatalytic dynamics is expected to yield several new full-solar-spectrum photocatalysts. The project is expected to contribute to the understanding of the processes and mechanisms underlying photocatalysis, and lead to useable, stable and durable photocatalytics. The outcomes will enable efficient, cost-effective and reliable production of clean energy in a low-emission way.Read moreRead less
Engineering Processable, Tough Hydrogels with Biological Activity. The project aims to design a new class of tough hydrogels to address issues in engineering complex soft and robust structures. These hydrogels have superior properties compared with current materials as they are biologically active, processable by various manufacturing techniques, elastic and have a capacity for rapid self-recovery that are ideal for soft tissues. Their physical property is tunable by modification of their compos ....Engineering Processable, Tough Hydrogels with Biological Activity. The project aims to design a new class of tough hydrogels to address issues in engineering complex soft and robust structures. These hydrogels have superior properties compared with current materials as they are biologically active, processable by various manufacturing techniques, elastic and have a capacity for rapid self-recovery that are ideal for soft tissues. Their physical property is tunable by modification of their compositions that enable construction of complex seamless structure such as valved conduit with anistropic property. Expected outcomes of this project include new insights into material design, multi-physics modelling, and multi-material additive manufacturing for broad applications in soft robotics and medical implants.Read moreRead less
Miniature lithium ion battery for implantable medical device applications. This project addresses National Research Priorities in the areas of breakthrough science, frontier technologies and promoting and maintaining good health. Substantial national benefit could be derived from this project: (i) Australia will innovate in an important and intensely active area in which the results will have long-lasting significance in implantable rechargeable battery development; (ii)The development of new sc ....Miniature lithium ion battery for implantable medical device applications. This project addresses National Research Priorities in the areas of breakthrough science, frontier technologies and promoting and maintaining good health. Substantial national benefit could be derived from this project: (i) Australia will innovate in an important and intensely active area in which the results will have long-lasting significance in implantable rechargeable battery development; (ii)The development of new scientific knowledge related to this project will place Australia at the forefront of an emerging domain of research body batteries; (iii) In the long term, the successful outcome of this research will lead to more reliable batteries for implantable devices, thereby promoting health care.Read moreRead less
Heat-resisting iron-nickel base alloys in challenging new applications: oxygen permeabilities and resistance to internal oxidation. There is a pressing need to develop heat resisting alloys which can function adequately in higher operating temperatures and gas mixtures rich in carbon and hydrogen to be handled in advanced technologies for power generation. The expected outcomes of this project will provide the basis for design/selection of these more corrosion-resistant alloys.
New directions to miniaturized power sources: Integrated all-solid-state rechargeable batteries. This project will lead to the development of safe integrated all-solid-state miniaturized lithium ion batteries for small autonomous devices, such as implantable medical devices, hearing aids, small autonomous devices with sensing and actuation, and for communications and rapid chemical/biological analysis. This will make a significant contribution to the nation in the areas of science, technology, h ....New directions to miniaturized power sources: Integrated all-solid-state rechargeable batteries. This project will lead to the development of safe integrated all-solid-state miniaturized lithium ion batteries for small autonomous devices, such as implantable medical devices, hearing aids, small autonomous devices with sensing and actuation, and for communications and rapid chemical/biological analysis. This will make a significant contribution to the nation in the areas of science, technology, health, and the economy. The development of new scientific knowledge related to this project will place Australia at the forefront of an emerging domain of research. The project will also provide excellent training for postgraduate students and young researchers to develop their skills in chemistry, materials science, and battery technology.Read moreRead less