Stability of nanoscale structures at the surface of metallic glasses. This project aims to develop advanced electrodes and catalysts for batteries and hydrogen generation. These technologies are crucial components in the efficient use of alternative energy supplies. The outcome of this project will be an accurate computer modelling tool for predicting nanoporous structures of metallic glass generated by de-alloying, and for establishing the role of various factors in determining the stability of ....Stability of nanoscale structures at the surface of metallic glasses. This project aims to develop advanced electrodes and catalysts for batteries and hydrogen generation. These technologies are crucial components in the efficient use of alternative energy supplies. The outcome of this project will be an accurate computer modelling tool for predicting nanoporous structures of metallic glass generated by de-alloying, and for establishing the role of various factors in determining the stability of metallic glass nanostructures. This work will include fundamental insights into glass surfaces and dissolution.Read moreRead less
Properties of nonequilibrium steady states. A nonequilibrium steady state (NESS) occurs when work is performed on a system and the heat so generated is absorbed by a thermostatting mechanism. The system settles into steady state and its properties no longer change. Almost all experimental systems of interest are in a nonequilibrium state, so understanding NESSs is highly significant. Unlike time stationary equilibrium states, the distribution of microstates in a NESS cannot be described by simpl ....Properties of nonequilibrium steady states. A nonequilibrium steady state (NESS) occurs when work is performed on a system and the heat so generated is absorbed by a thermostatting mechanism. The system settles into steady state and its properties no longer change. Almost all experimental systems of interest are in a nonequilibrium state, so understanding NESSs is highly significant. Unlike time stationary equilibrium states, the distribution of microstates in a NESS cannot be described by simple closed form distributions. This project will determine properties, symmetries and extrema of NESS using concepts and theorems developed for studying transient nonequilibrium states, and will also determine if approximate, physically relevant forms of the phase space distributions can be developed.Read moreRead less
Computational studies of melting and the solvation properties of ionic liquids. Ionic liquids are used in industry as green solvents and electrolytes, although there is not yet sufficient knowledge on the science of ionic liquids to enable optimal solvents to be readily designed. This project uses state of the art techniques in computational chemistry to solve practical problems related to the characteristics of ionic liquids.
Promoting new reaction pathways with nonequilibrium flow. This project aims to develop a fundamental molecular level understanding of flow-induced physical and chemical reactions in liquids. Nonequilibrium molecular dynamics simulations will be used to gain insight into the mechanisms that promote reactions under shear, and how these are related to molecular structure and fluid composition. New relationships for determination of rate constants of reactions in nonequilibrium systems will also be ....Promoting new reaction pathways with nonequilibrium flow. This project aims to develop a fundamental molecular level understanding of flow-induced physical and chemical reactions in liquids. Nonequilibrium molecular dynamics simulations will be used to gain insight into the mechanisms that promote reactions under shear, and how these are related to molecular structure and fluid composition. New relationships for determination of rate constants of reactions in nonequilibrium systems will also be developed and tested. It is expected that this knowledge will enhance the capacity to control and promote reactions. This is significant for advancement of many technologies, from development of new synthetic pathways and products, to design of lubricants that can withstand extreme strain rates.Read moreRead less
Australian Laureate Fellowships - Grant ID: FL190100080
Funder
Australian Research Council
Funding Amount
$3,432,323.00
Summary
New frontiers for nonequilibrium systems. The universe is comprised of systems in states of change or responding to a driving force. Yet a fundamental understanding of these nonequilibrium systems that enables predictive design has eluded scientists to date. This program aims to develop ground-breaking principles and methodologies to predict properties of nonequilibrium systems using both statistical physics and molecular simulations. Significantly, by pioneering new theories and building Austra ....New frontiers for nonequilibrium systems. The universe is comprised of systems in states of change or responding to a driving force. Yet a fundamental understanding of these nonequilibrium systems that enables predictive design has eluded scientists to date. This program aims to develop ground-breaking principles and methodologies to predict properties of nonequilibrium systems using both statistical physics and molecular simulations. Significantly, by pioneering new theories and building Australian capacity in this area, we will be able to understand, control and utilise their distinctive behaviour in design. Expected outcomes and benefits are multi-dimensional, including breakthrough theory and new capability for high-end technologies such as nanofluidics, robotics and batteries.Read moreRead less
Accurate transport theory for nanofluidic separation science. The project will develop and test new methods to predict the distribution of different components of a complex solution flowing through a nanoporous medium. This will lead to new insights into ways of separating or concentrating the components, with applications ranging from lab on a chip devices to desalination.
Soft Modes, Amorphous Defects and the Mechanical Properties of Metallic Glasses. Accounting for the material properties of glassy solids in terms of the atomic configurations and processes remains a profound challenge, largely due to the complexity and heterogeneity of amorphous structure. This project uses computer simulations to explore the proposition that localised soft vibrational modes in metallic glasses play a role analogous to that of crystal defects and can provide a valuable microscop ....Soft Modes, Amorphous Defects and the Mechanical Properties of Metallic Glasses. Accounting for the material properties of glassy solids in terms of the atomic configurations and processes remains a profound challenge, largely due to the complexity and heterogeneity of amorphous structure. This project uses computer simulations to explore the proposition that localised soft vibrational modes in metallic glasses play a role analogous to that of crystal defects and can provide a valuable microscopic account of the material properties and their dependence on composition and preparation. This research will lead to a significant improvement in our capacity to tune the properties of amorphous alloys by fabrication methods.Read moreRead less
Predicting concentration-gradient-driven liquid transport in 2D membranes. This project aims to achieve a predictive understanding of liquid transport through two-dimensional (2D) membranes driven by concentration gradients by using a combination of novel theory and computation. Membranes made from 2D nanomaterials hold great promise for many applications from desalination to power generation to chemical sensing, but the concentration-gradient-driven transport processes that underlie these appli ....Predicting concentration-gradient-driven liquid transport in 2D membranes. This project aims to achieve a predictive understanding of liquid transport through two-dimensional (2D) membranes driven by concentration gradients by using a combination of novel theory and computation. Membranes made from 2D nanomaterials hold great promise for many applications from desalination to power generation to chemical sensing, but the concentration-gradient-driven transport processes that underlie these applications are not well understood. The expected outcome of this project is an unprecedented quantitative understanding of the parameters that control these transport processes. This will enable predictive optimisation of 2D membranes, which will reduce the time and cost of membrane development for diverse applications.
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Interactions, phase behavior and self-assembly of colloidal nanorods: Establishing design rules for creating new nano-structured materials. This project aims to apply new computational methods developed by the applicant to characterise the interactions between colloidal nanorods and their self-assembly in the presence of interfaces and directional interactions. While nanoparticles can currently be made in a staggering array of shapes, patterns and materials, organising such objects into extended ....Interactions, phase behavior and self-assembly of colloidal nanorods: Establishing design rules for creating new nano-structured materials. This project aims to apply new computational methods developed by the applicant to characterise the interactions between colloidal nanorods and their self-assembly in the presence of interfaces and directional interactions. While nanoparticles can currently be made in a staggering array of shapes, patterns and materials, organising such objects into extended structures that could revolutionise technology remains a challenge. The expected outcome is a robust strategy for making monolayer films of rods aligned perpendicular to a variety of interfaces for the fabrication of solar cells, microfiltration membranes and biosensors.Read moreRead less
Kinetics of Fast Crystal Growth in Inorganic Alloys and Molecular Liquids. The aim of this project is to identify the physical origins of fast crystal growth in three important classes of materials: metallic alloys, chalcogenide alloys and organic molecules. Fast crystal growth is crucial to the development of solid state memory based on phase change. In metallic glasses and many pharmaceuticals, fast growth is a problem, destabilising the desired glassy state. The anticipated outcomes of the pr ....Kinetics of Fast Crystal Growth in Inorganic Alloys and Molecular Liquids. The aim of this project is to identify the physical origins of fast crystal growth in three important classes of materials: metallic alloys, chalcogenide alloys and organic molecules. Fast crystal growth is crucial to the development of solid state memory based on phase change. In metallic glasses and many pharmaceuticals, fast growth is a problem, destabilising the desired glassy state. The anticipated outcomes of the project will include the capability to chemically manipulate the crystal growth rate to design new functional phase changes devices, to identify new types of glass forming materials and to replace the 80-year-old theory of crystal growth with one that accurately reflects the microscopic mechanisms of ordering at the growing interface.Read moreRead less