Unravelling the structural origin of cyclic fatigue in ferroelectrics. Ferroelectric materials have extensive applications in electromechanical devices and memories and in service are often subjected to repeat mechanical and/or electrical loading, leading to cyclic fatigue and failure. This project aims to apply in-situ electron microscopy techniques and computational modelling to explore cyclic ferroelectric fatigue behaviour and to understand the relationships between local atomic scale struct ....Unravelling the structural origin of cyclic fatigue in ferroelectrics. Ferroelectric materials have extensive applications in electromechanical devices and memories and in service are often subjected to repeat mechanical and/or electrical loading, leading to cyclic fatigue and failure. This project aims to apply in-situ electron microscopy techniques and computational modelling to explore cyclic ferroelectric fatigue behaviour and to understand the relationships between local atomic scale structure and fatigue. The structural origin of ferroelectric fatigue has not been clear because of the limitations of previous measurement capabilities. This project will provide guidance in materials design to increase ferroelectric fatigue lifetime for more reliable ferroelectric-based electronic devices.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE120100036
Funder
Australian Research Council
Funding Amount
$440,000.00
Summary
National in-situ transmission electron microscope facilities. This project will establish six complementary transmission electron microscope (TEM) facilities at various locations. The establishment of the facilities will be a key step in developing advanced capacity in Australia and will support ground-breaking research in diverse material systems for various high-performing applications, including electronics, optoelectronics, light metals, biomaterials, energy, and environment.
Dislocation motion and anelastic recovery in layered ceramic titanate. This project aims to research deformation and facture in brittle ceramic nanowire materials and anelastic behaviour in tensile deformation. Layered sodium titanate is used in energy storage and water treatment, but in-situ tensile tests have observed unconventional deformation behaviour, with significant dislocation motion and anelastic recovery. This project will study the deformation mechanism in layered sodium titanate nan ....Dislocation motion and anelastic recovery in layered ceramic titanate. This project aims to research deformation and facture in brittle ceramic nanowire materials and anelastic behaviour in tensile deformation. Layered sodium titanate is used in energy storage and water treatment, but in-situ tensile tests have observed unconventional deformation behaviour, with significant dislocation motion and anelastic recovery. This project will study the deformation mechanism in layered sodium titanate nanowires through molecular dynamics simulations, empirical interatomic potential, and in situ TEM experiments. Expected outcomes include knowledge of the deformation mechanism of this layered titanate which can be broadened to technologically important layered ceramic materials.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE220101103
Funder
Australian Research Council
Funding Amount
$450,000.00
Summary
Giant piezo responses in rare-earth doped eco-friendly relaxor perovskites. This project aims to design and fabricate superior eco-friendly substitutions for lead-based perovskites widely used in piezoelectric devices, to address the long-standing toxic concern of lead for human beings and the environment in the community. It is expected to surmount the fundamental limit of current approaches to reach giant room-temperature piezoelectric responses in lead-free perovskites through using a pioneer ....Giant piezo responses in rare-earth doped eco-friendly relaxor perovskites. This project aims to design and fabricate superior eco-friendly substitutions for lead-based perovskites widely used in piezoelectric devices, to address the long-standing toxic concern of lead for human beings and the environment in the community. It is expected to surmount the fundamental limit of current approaches to reach giant room-temperature piezoelectric responses in lead-free perovskites through using a pioneering route named rare-earth doped relaxor/morphotropic phase boundary crossover. Success of this project will not only meet the Australia’s ecological sustainability goals, but also provide commercial opportunities for Australia in the large market of piezoelectric devices (> 25 Billion USD annually).Read moreRead less
New dielectric materials: Improving storage density of high temperature multilayer ceramic capacitors to sustainably meet future energy demands. Electrical energy generation from renewable sources, such as solar, wind and geothermal, provide enormous potential for meeting future energy demands. However, the ability to store and control this energy for miniaturisation and modularisation in applications requiring a wide temperature usage range is a limiting factor that needs to be addressed. This ....New dielectric materials: Improving storage density of high temperature multilayer ceramic capacitors to sustainably meet future energy demands. Electrical energy generation from renewable sources, such as solar, wind and geothermal, provide enormous potential for meeting future energy demands. However, the ability to store and control this energy for miniaturisation and modularisation in applications requiring a wide temperature usage range is a limiting factor that needs to be addressed. This project aims to develop new bismuth-based lead-free dielectric materials for improving the storage density of high temperature multilayer ceramic capacitors for sustainable applications in the energy and vehicle industries, where high temperature stability and high volumetric efficiency are crucial.Read moreRead less
High performance complex oxide heterostructures for nanoelectronic devices. This project aims to develop a material with ultrahigh electron mobility and conductivity well above today’s materials at room temperature to enable next generation nanoelectronics. The demand for higher performance and lower power consumption in electronic systems drives the creation of materials for devices in nanometre scale. The success of these materials depends on enhancement in carrier mobility and conductivity. T ....High performance complex oxide heterostructures for nanoelectronic devices. This project aims to develop a material with ultrahigh electron mobility and conductivity well above today’s materials at room temperature to enable next generation nanoelectronics. The demand for higher performance and lower power consumption in electronic systems drives the creation of materials for devices in nanometre scale. The success of these materials depends on enhancement in carrier mobility and conductivity. This project will spatially separate the electron generation layer from the conduction layer by individually engineering the atomically sharp complex oxide heterointerfaces to enhance the electron mobility and density. This is expected to develop new materials and nanoelectronic technologies.Read moreRead less
Thin combinatorial films for heat management in microelectronics. This project aims to provide a viable solution for heat management in microelectronics by using highly efficient Peltier devices made with thin combinatorial films. Heat generated by electric current, which is ubiquitous in microelectronic devices, has become increasingly problematic for high density charge-based logical circuitries. The project will significantly enhance the energy conversion efficiency of Peltier devices by opti ....Thin combinatorial films for heat management in microelectronics. This project aims to provide a viable solution for heat management in microelectronics by using highly efficient Peltier devices made with thin combinatorial films. Heat generated by electric current, which is ubiquitous in microelectronic devices, has become increasingly problematic for high density charge-based logical circuitries. The project will significantly enhance the energy conversion efficiency of Peltier devices by optimising the interdependent electron and phonon transports, simultaneously, with a new concept of thin combinatorial films for heat management in microelectronic devices. This is expected to facilitate the development of novel materials in Australia, with access to a large global market.Read moreRead less
Beyond Phononic Crystals-Building New Concepts to Enhance Thermoelectricity. Waste heat, which is discharged into the environment from industrial plants and vehicle exhausts, represents a huge amount of lost energy and is a major contributor to global warming. Thermoelectric materials, which can generate electricity from the waste heat, could play an important role in a global sustainable energy solution while reducing greenhouse emissions. This program is aimed at experimental and theoretical d ....Beyond Phononic Crystals-Building New Concepts to Enhance Thermoelectricity. Waste heat, which is discharged into the environment from industrial plants and vehicle exhausts, represents a huge amount of lost energy and is a major contributor to global warming. Thermoelectric materials, which can generate electricity from the waste heat, could play an important role in a global sustainable energy solution while reducing greenhouse emissions. This program is aimed at experimental and theoretical development of new concepts to engineer the interfaces with various atomic stacking sequence of two complex oxides and also the three-dimensional binary nanocube superlattices to enhance the energy conversion efficiency of oxide based thermoelectric materials by several times over today's state-of-the-art.Read moreRead less
Fatigue in Lead-free Piezoceramics. This project aims are to achieve a fundamental understanding of the fatigue behaviour of lead-free piezoelectric ceramics which achieve high strain through phase transformations and then ascertain the effects of this behaviour on material degradation rates. The expected outcomes will facilitate replacement of toxic lead in commodity electronics. The focus will be on new lead-free bismuth-alkali-based piezoelectric ceramic systems which demonstrate exciting pot ....Fatigue in Lead-free Piezoceramics. This project aims are to achieve a fundamental understanding of the fatigue behaviour of lead-free piezoelectric ceramics which achieve high strain through phase transformations and then ascertain the effects of this behaviour on material degradation rates. The expected outcomes will facilitate replacement of toxic lead in commodity electronics. The focus will be on new lead-free bismuth-alkali-based piezoelectric ceramic systems which demonstrate exciting potential as alternate materials to lead zirconate titanate (PZT) materials. Successful optimisation of the materials' design and knowledge of their degradation rates are expected to facilitate their commercialisation through a profound reduction in the environmental challenges associated with manufacture and disposal of devices.Read moreRead less
Development of advanced metal oxide materials for next generation nonvolatile memory devices. The purpose of the project is to explore a new memory technology, resistive random-access memory, that can be made smaller than those of today, as well as preferably being faster, power saving and nonvolatile. The project is expected to bring resistive random-access memory materials a step closer to nonvolatile memory devices application.