Advanced computational techniques for micro/nano multiscale systems of NEMS/BioMEMS. The outcome of this project will have the following benefits to Australia.
1) It will improve the research level in the area of multiscale simulation of NEMS/BioMEMS;
2) The project will be beneficial to possibly establish new industries in the areas of nanotechnology as well as to make good use of today's microelectronics, mircofabrication and computer technology that have already established in Australia;
....Advanced computational techniques for micro/nano multiscale systems of NEMS/BioMEMS. The outcome of this project will have the following benefits to Australia.
1) It will improve the research level in the area of multiscale simulation of NEMS/BioMEMS;
2) The project will be beneficial to possibly establish new industries in the areas of nanotechnology as well as to make good use of today's microelectronics, mircofabrication and computer technology that have already established in Australia;
3) The manpower trained by this project in the areas of multi-scale simulation of MEMS/NEMS/BioMEMS will provide a crucial support for the future industry of Australia.
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Design of reactive foils for joining amorphous alloys. Amorphous alloys or metallic glasses are special materials that retain the random structure of a liquid but in a solid form. They can show special properties of very high strength, toughness and corrosion resistance. The enormous difficulty in joining amorphous alloys to make larger assemblies is greatly curbing their uptake in technology. In this research, state of the art experimental and computational tools will be used to investigate the ....Design of reactive foils for joining amorphous alloys. Amorphous alloys or metallic glasses are special materials that retain the random structure of a liquid but in a solid form. They can show special properties of very high strength, toughness and corrosion resistance. The enormous difficulty in joining amorphous alloys to make larger assemblies is greatly curbing their uptake in technology. In this research, state of the art experimental and computational tools will be used to investigate the extremely fast high temperature reactions occurring in reactive foils of layered metals which, when inserted at the proposed join and ignited, quickly produce a bond. The research will lay the foundation for a robust and reliable means for joining amorphous alloys by means of reactive foils. Read moreRead less
Modelling soft filled viscoelastic solids. Wheat flour doughs are made in vast quantities daily, and improvements in processing, especially in sheeting (rolling) and extrusion are needed. To enable this we will create a novel mathematical description of the material which will be useful for predicting the shapes of processed products. Wheat breeding cycles can be shortened by using the model rheological parameters, since baking quality is closely linked to dough rheology. A number of Australian ....Modelling soft filled viscoelastic solids. Wheat flour doughs are made in vast quantities daily, and improvements in processing, especially in sheeting (rolling) and extrusion are needed. To enable this we will create a novel mathematical description of the material which will be useful for predicting the shapes of processed products. Wheat breeding cycles can be shortened by using the model rheological parameters, since baking quality is closely linked to dough rheology. A number of Australian wheats will be considered and their rheologies will be compared.Read moreRead less
Improving the ductility of amorphous alloys via severe plastic deformation. Amorphous alloys are the strongest metallic materials. However, the brittle nature of the materials has significantly limited their applicability in reliability-critical structural applications. Despite significant worldwide efforts, improvement of the ductility has been limited to amorphous alloys with only a few specific compositions. This project aims to develop a universal approach to substantially enhancing the duct ....Improving the ductility of amorphous alloys via severe plastic deformation. Amorphous alloys are the strongest metallic materials. However, the brittle nature of the materials has significantly limited their applicability in reliability-critical structural applications. Despite significant worldwide efforts, improvement of the ductility has been limited to amorphous alloys with only a few specific compositions. This project aims to develop a universal approach to substantially enhancing the ductility of amorphous alloys through the application of severe plastic deformation, to explore the effect of severe plastic deformation on structure, and to reveal the fundamental mechanisms of the mechanical behaviour of amorphous alloys. The results are expected to enable structural design of amorphous alloys with excellent ductility.Read moreRead less
Novel multiscale fibre composites for cryogenic space technologies. This project aims to develop new composite materials technologies for cryogenic space applications. Multifunctional nanomaterials with negative thermal expansion properties will be developed to simultaneously reduce thermal stress and improve fracture toughness, suppressing microcracking of fibre composites observed in current materials at cryogenic temperatures. New interleaves will be developed to act as gas barriers and provi ....Novel multiscale fibre composites for cryogenic space technologies. This project aims to develop new composite materials technologies for cryogenic space applications. Multifunctional nanomaterials with negative thermal expansion properties will be developed to simultaneously reduce thermal stress and improve fracture toughness, suppressing microcracking of fibre composites observed in current materials at cryogenic temperatures. New interleaves will be developed to act as gas barriers and provide strength. The composites will provide a new lightweight solution for storing cryogenic propellants such as liquid hydrogen and oxygen, for the next generation re-usable spacecraft. The outcomes of this project will enable Australian companies to produce and export specialised, high-performance composite products.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE170100053
Funder
Australian Research Council
Funding Amount
$375,000.00
Summary
Quantitatively probing the nanoscale plasticity of a single grain boundary. This project aims to study grain boundaries, which are important in the mechanical behaviour of nanomaterials. However, the exact contribution of individual grain boundaries to mechanical properties is not well understood, affecting advanced materials design. This project will use in-situ deformation transmission electron microscopy techniques to reveal how individual grain boundaries deform and interact with dislocation ....Quantitatively probing the nanoscale plasticity of a single grain boundary. This project aims to study grain boundaries, which are important in the mechanical behaviour of nanomaterials. However, the exact contribution of individual grain boundaries to mechanical properties is not well understood, affecting advanced materials design. This project will use in-situ deformation transmission electron microscopy techniques to reveal how individual grain boundaries deform and interact with dislocations, and to link directly the structures and orientation of individual grain boundaries with mechanical behaviours. Expected results are better structural design of advanced metallic nanomaterials with superior mechanical performance.Read moreRead less
The effect of structure and size on the mechanical behaviour of III-V semiconductor nanowires. The project aims to apply in-situ deformation transmission electron microscopy to investigate the mechanical behaviour of compound semiconductor nanowires and the effect of structure and geometry on the behaviour. The results will uncover the fundamental mechanical properties of nanowires and will guide the design of nanowire-based devices.
Real-time imaging of crystal strengthening mechanisms in metals. The strength limit of a metal is marked by rapid motion of crystalline defects. The associated speeds can locally approach that of sound. To probe the associated mechanisms clearly requires both spatial and temporal resolution. We propose to create a new bulk x-ray technique with an unprecedented combination of temporal and spatial resolution. We plan to exploit the technique to mediate a step change in modelling strength based on ....Real-time imaging of crystal strengthening mechanisms in metals. The strength limit of a metal is marked by rapid motion of crystalline defects. The associated speeds can locally approach that of sound. To probe the associated mechanisms clearly requires both spatial and temporal resolution. We propose to create a new bulk x-ray technique with an unprecedented combination of temporal and spatial resolution. We plan to exploit the technique to mediate a step change in modelling strength based on twinning. The formation of crystalline twins is known to dictate the strength of the light metal magnesium. A fuller understanding of the effect of twinning on strength in this metal will provide much needed confidence to implement it more widely in energy saving applications.Read moreRead less
Rheology of suspensions with viscoelastic matrices. Suspensions of particles in non-simple fluids are an important class of materials (foods, paints, cosmetics, semi-crystalline polymers) for which scant experimental flow data (beyond viscosity measurements) and practically no easily applicable theories exist. The project aims to give us vastly improved theoretical predictions of material behaviour.