Stress Evaluation with Non-Linear Guided Waves. This project plans to investigate a novel approach for in situ measurement of stress in structures based on an internal resonance phenomenon for nonlinear guided waves. Monitoring the stress level of critical structural components is important to ensure structural safety. The project plans to derive the requirements for this internal resonance and its dependence on stress analytically and verify them experimentally for both simple waveguides and mo ....Stress Evaluation with Non-Linear Guided Waves. This project plans to investigate a novel approach for in situ measurement of stress in structures based on an internal resonance phenomenon for nonlinear guided waves. Monitoring the stress level of critical structural components is important to ensure structural safety. The project plans to derive the requirements for this internal resonance and its dependence on stress analytically and verify them experimentally for both simple waveguides and more realistic structures. The expected outcome is the demonstration of the feasibility of a new inexpensive method for continuous monitoring of applied or thermally-induced stresses, which is of great importance in several engineering contexts, such as modern railway track rails, pipelines or pre-stressed strands in concrete structures.Read moreRead less
Safe and efficient biomedical nanomaterials. This project aims to rationally engineer nanomaterials with controlled biological responses. Nanomaterials are becoming widespread in biomedicine and engineering, but are inefficient and unsafe. This project will develop atomic scale models to understand interactions between engineered nanoparticles and the crowded cellular environment. It will design extremely sensitive biosensors and theranostic nanodevices combining medical imaging capacity with pr ....Safe and efficient biomedical nanomaterials. This project aims to rationally engineer nanomaterials with controlled biological responses. Nanomaterials are becoming widespread in biomedicine and engineering, but are inefficient and unsafe. This project will develop atomic scale models to understand interactions between engineered nanoparticles and the crowded cellular environment. It will design extremely sensitive biosensors and theranostic nanodevices combining medical imaging capacity with precision targeted drug delivery to improve efficiency and safety of nanomaterials for biomedical applications in both vitro and in vivo enabling cost effective early diagnostics and more efficient treatments.Read moreRead less
Understanding biomolecular interactions of nanoparticles for engineering efficient biomedical materials and devices. Recent studies suggest that proteins bind differently to nano-patterned materials. This phenomenon holds a great potential for engineering of novel materials and devices for biomedical applications. At the same time, there are increasing concerns due to formation of biomolecular "coronas" of nanoparticles which can change their biological identity. This project will develop knowle ....Understanding biomolecular interactions of nanoparticles for engineering efficient biomedical materials and devices. Recent studies suggest that proteins bind differently to nano-patterned materials. This phenomenon holds a great potential for engineering of novel materials and devices for biomedical applications. At the same time, there are increasing concerns due to formation of biomolecular "coronas" of nanoparticles which can change their biological identity. This project will develop knowledge of the molecular mechanisms of nanomaterials interactions with molecular components of biological environment which will be exploited to improve molecular recognition needed in biosensors and drug delivery applications. The project outcomes will help formulate rational design principles for efficient biomedical materials and nanodevices.Read moreRead less
Prediction of inertial particle focusing in curved microfluidic ducts. This project aims to develop mathematical models to predict migration of particles suspended in flow through curved microfluidic ducts and their focusing by size to different regions in the cross-section of the duct. New knowledge in mathematics and engineering will be generated through models that capture the two-way force balance between fluid and particles and by a novel use of asymptotics for computational efficiency. Exp ....Prediction of inertial particle focusing in curved microfluidic ducts. This project aims to develop mathematical models to predict migration of particles suspended in flow through curved microfluidic ducts and their focusing by size to different regions in the cross-section of the duct. New knowledge in mathematics and engineering will be generated through models that capture the two-way force balance between fluid and particles and by a novel use of asymptotics for computational efficiency. Expected outcomes are understanding of the physics that drives particle migration and the parameters that may be used to control particle focusing. This will benefit design and operation of microfluidic devices for particle sorting as required for "liquid biopsy", the isolation of cancer cells in a routine blood sample.Read moreRead less
Application of exact coherent structures to transition and turbulence. This project aims to understand coherent structures and devise methods to prevent bypass transition to turbulence and reduce turbulent wall drag. Coherent structures in turbulence may be identified with nonlinear solutions of the exact equations of motion. Such "exact" coherent structures have their Reynolds number dependence described explicitly and apply for moderate to very large Reynolds numbers, well above the range of f ....Application of exact coherent structures to transition and turbulence. This project aims to understand coherent structures and devise methods to prevent bypass transition to turbulence and reduce turbulent wall drag. Coherent structures in turbulence may be identified with nonlinear solutions of the exact equations of motion. Such "exact" coherent structures have their Reynolds number dependence described explicitly and apply for moderate to very large Reynolds numbers, well above the range of full Navier–Stokes calculations. Understanding the fundamentals of turbulence is expected to lead to more efficient and cheaper air transportation, and better tools for climate prediction and short-term weather forecasting.Read moreRead less
A Novel Approach To Flow Control By Topography. The project will resolve important questions concerning the influence of boundary topography on transition to turbulence and on the exact coherent structures forming the backbone of turbulence.
The canonical topography known from previous work by one of the investigators is a wavy wall and, as well as resolving important issues in flow physics, the research is relevant to many flows of importance such roughness induced transition on aircraft wings, ....A Novel Approach To Flow Control By Topography. The project will resolve important questions concerning the influence of boundary topography on transition to turbulence and on the exact coherent structures forming the backbone of turbulence.
The canonical topography known from previous work by one of the investigators is a wavy wall and, as well as resolving important issues in flow physics, the research is relevant to many flows of importance such roughness induced transition on aircraft wings, flows in heat transfer/mixing devices, blood flow and the influence of topography on the atmospheric boundary layer.
Expected outcomes are an understanding of the interplay between transitional and turbulent flows with wall topography together with strategies to enhance mixing and drag reduction.Read moreRead less
Catastrophic transition to turbulence in rotation-dominated flows. Rotation-dominated flows are very common in engineering applications and fluid dynamics of the Earth's atmosphere, oceans, and core. Such flows are known to make a sudden transition from an orderly to an energetic turbulent state and this project aims to discover the reason why.
Optimisation of piezoelectric metamaterials: Towards robotic stress sensors. This project aims to design new piezoelectric material microstructures that can enhance the measurement of complex local stress states within robotic limbs. The project expects to generate new knowledge of the achievable properties of multi-poled piezoelectric materials and develop computational tools for the analysis and structural optimisation of such materials. The designed microstructures may revolutionise piezoelec ....Optimisation of piezoelectric metamaterials: Towards robotic stress sensors. This project aims to design new piezoelectric material microstructures that can enhance the measurement of complex local stress states within robotic limbs. The project expects to generate new knowledge of the achievable properties of multi-poled piezoelectric materials and develop computational tools for the analysis and structural optimisation of such materials. The designed microstructures may revolutionise piezoelectric sensor technology. Expected outcomes include manufactured proof-of-concept sensors that enable measurement of local stress fields. This should provide significant benefits, such as improved future robot capability and reliability, and research training for next-generation Australian computational mathematicians. Read moreRead less
Multiscale physics theory to understand secondary migration of hydrocarbons. This project aims to derive mathematical models to reveal the geological history of how petroleum accumulates at laboratory, reservoir, and basin scales. The project will identify secondary migration trajectories of hydrocarbons from source rocks to stratigraphic traps, to optimise exploration for energy resources. By enabling multiscale analytical modelling, the new model will improve the reliability of reservoir chara ....Multiscale physics theory to understand secondary migration of hydrocarbons. This project aims to derive mathematical models to reveal the geological history of how petroleum accumulates at laboratory, reservoir, and basin scales. The project will identify secondary migration trajectories of hydrocarbons from source rocks to stratigraphic traps, to optimise exploration for energy resources. By enabling multiscale analytical modelling, the new model will improve the reliability of reservoir characterisation at the crucial initial exploitation stage, and prediction of oil-gas distribution in petroleum basin. The novel multiscale approach is expected to significantly improve exploration and exploitation and create highly skilled jobs to incorporate such modelling into the energy sector.Read moreRead less
Tailoring the nanoporous structure of polymer membranes for fast water permeation. A novel strategy of using a hydrophobic, charged polymer as an additive is proposed to tailor the wettability and charge density gradients in nanoporous polymer membranes for enhancing water permeation. The experimental results obtained in this project will advance our fundamental understanding of the roles of the pore surface charge and wettability gradients in water transport through nanopores. The proposed rese ....Tailoring the nanoporous structure of polymer membranes for fast water permeation. A novel strategy of using a hydrophobic, charged polymer as an additive is proposed to tailor the wettability and charge density gradients in nanoporous polymer membranes for enhancing water permeation. The experimental results obtained in this project will advance our fundamental understanding of the roles of the pore surface charge and wettability gradients in water transport through nanopores. The proposed research is expected to result in a major breakthrough in designing nanoporous membranes with ultrahigh high flux and superior separation properties for a variety of applications including water treatment and food processing. Read moreRead less