Analysis, simulation, fabrication and characterization of reliable, robust and scalable compact cooling elements based on semiconductor nanostructures. Modern electronic, microelectronic and optoelectronic devices generally work better when they are cooler. We aim to develop a semiconductor nanostructure cooling element which directly integrates into existing devices. The solid-state cooling element will be reliable, robust, scalable and operate in any orientation. The basis of operation is ....Analysis, simulation, fabrication and characterization of reliable, robust and scalable compact cooling elements based on semiconductor nanostructures. Modern electronic, microelectronic and optoelectronic devices generally work better when they are cooler. We aim to develop a semiconductor nanostructure cooling element which directly integrates into existing devices. The solid-state cooling element will be reliable, robust, scalable and operate in any orientation. The basis of operation is thermionic emission - electrons are the working fluid. Our project combines (1) analysis and simulation, (2) fabrication of nanostructures and (3) experimental test-benching using optical and electrical methods. The outcome of this research has the potential to revolutionize cooling of modern electronic and photonic systems, from computer motherboards to mobile phones.Read moreRead less
Novel methods for enhancing room temperature figure of merit of thermoelectric/thermionic materials for refrigeration applications. With global warming and an increased awareness of climate change, devices such as thermoelectric modules can be part of the solution, particularly if their relative power and efficiency can be increased. The aim of this project is to bring together theoreticians, experimentalists, materials scientists, and industrial partners with complementary expertise to develop ....Novel methods for enhancing room temperature figure of merit of thermoelectric/thermionic materials for refrigeration applications. With global warming and an increased awareness of climate change, devices such as thermoelectric modules can be part of the solution, particularly if their relative power and efficiency can be increased. The aim of this project is to bring together theoreticians, experimentalists, materials scientists, and industrial partners with complementary expertise to develop new techniques and methods for fabricating novel thermoelectric/thermionic materials with high figure of merit, ZT, for solid state refrigeration applications. The success of the project will lead to a 3 to 5 fold increase in the market share of thermoelectric cooler and will have a significant impact on the Australian economy and reduce greenhouse emissions and global warming. Read moreRead less
Simulation and characterisation of opto-thermionic cooling devices. Opto-thermionic devices combine thermionic emission and laser cooling to achieve the maximum cooling power and highest thermal efficiency. These devices are ultra small, very reliable and fully integrable. Many important problems need to be solved to improve the performance of this new class of solid-state cooling devices. One is to understand and manipulate the electron-hole radiative recombination and minimize the Auger proces ....Simulation and characterisation of opto-thermionic cooling devices. Opto-thermionic devices combine thermionic emission and laser cooling to achieve the maximum cooling power and highest thermal efficiency. These devices are ultra small, very reliable and fully integrable. Many important problems need to be solved to improve the performance of this new class of solid-state cooling devices. One is to understand and manipulate the electron-hole radiative recombination and minimize the Auger process in reduced dimensionality devices such as quantum wells. Researchers at Wollongong and Lund will collaborate on theoretical analysis, computer simulation and electrical/optical measurements to solve this problem.Read moreRead less
High efficiency thermoelectric nanomaterials. High efficiency thermoelectric power generators and refrigerators will have a wealth of applications in the automotive, semiconductor and power generation industries, among many others. Such technology could be used to recycle a significant fraction of the waste heat produced in industrial processes or in car engines, reducing fuel consumption and greenhouse gas emissions, or to produce high efficiency domestic refrigerators with no moving parts. Thi ....High efficiency thermoelectric nanomaterials. High efficiency thermoelectric power generators and refrigerators will have a wealth of applications in the automotive, semiconductor and power generation industries, among many others. Such technology could be used to recycle a significant fraction of the waste heat produced in industrial processes or in car engines, reducing fuel consumption and greenhouse gas emissions, or to produce high efficiency domestic refrigerators with no moving parts. This project will improve our theoretical understanding of the fundamental physics which underlies the operation of thermoelectric power generators and refrigerators, and will assist the design and optimisation of the next generation of high efficiency thermoelectric nanomaterials.Read moreRead less
Development of Solid-state cooling chips. The performance of modern electronic, microelectronic, optoelectronic and photonic devices improves as they are cooled. We aim to develop semiconductor cooling elements that can be directly integrated into existing circuits and devices. The new solid-state cooling elements will be reliable, robust, scalable and operate in any orientation. The proposed international collaboration combines the expertise of the Chinese Academy of Science in device fabricat ....Development of Solid-state cooling chips. The performance of modern electronic, microelectronic, optoelectronic and photonic devices improves as they are cooled. We aim to develop semiconductor cooling elements that can be directly integrated into existing circuits and devices. The new solid-state cooling elements will be reliable, robust, scalable and operate in any orientation. The proposed international collaboration combines the expertise of the Chinese Academy of Science in device fabrication with the expertise of the University of Wollongong in device characterisation and modelling. The outcome of this research has the potential to revolutionize cooling of diverse electronic systems, from computer motherboards to mobile phones.Read moreRead less
Nano-scale tuning: a path to functional materials for hydrogen storage. If the nano-stores discovered can be taken from bench to markets, the way energy is produced and used will be revolutionised. New markets based on clean energy technologies will appear. The emergence of miniaturised hydrogen stores would create unforeseen markets. By utilising Australia's abundant resources in lithium (Li), magnesium (Mg) and aluminium (Al) to store hydrogen, the beneficiaries would be the Australian industr ....Nano-scale tuning: a path to functional materials for hydrogen storage. If the nano-stores discovered can be taken from bench to markets, the way energy is produced and used will be revolutionised. New markets based on clean energy technologies will appear. The emergence of miniaturised hydrogen stores would create unforeseen markets. By utilising Australia's abundant resources in lithium (Li), magnesium (Mg) and aluminium (Al) to store hydrogen, the beneficiaries would be the Australian industry and academia interested in the knowledge gained and the application of the unique features of nano-hydride materials. By reducing the emissions of greenhouse gases, society would also benefit from a cleaner environment and better health.Read moreRead less
Silicon All-Optical Nanophotonic Devices for 160Gb/s Systems. With the exponential growth in global bandwidth demand, the speed, cost, size, and energy requirements of telecommunications equipment are reaching a crisis point. This project will pioneer ultra-high speed silicon integrated all-optical signal processing devices that will provide faster, cheaper and more energy efficient solutions than current electronic based approaches. In doing so, this will also directly benefit the Australian ph ....Silicon All-Optical Nanophotonic Devices for 160Gb/s Systems. With the exponential growth in global bandwidth demand, the speed, cost, size, and energy requirements of telecommunications equipment are reaching a crisis point. This project will pioneer ultra-high speed silicon integrated all-optical signal processing devices that will provide faster, cheaper and more energy efficient solutions than current electronic based approaches. In doing so, this will also directly benefit the Australian photonics, telecommunications, and defence industries. It will use novel structures such as nanowire waveguides and micro-ring resonators to demonstrate all-optical signal regeneration, wavelength conversion, demultiplexing and other functions at speeds up to 160Gb/s.Read moreRead less
Biomimetic surface coatings for drag and fouling reduction. This project aims to provide new insights into liquid flow and adsorption at liquid/solid and liquid/liquid interfaces, by using a combination of theoretical predictions, nanoscale techniques and nanofabrication approaches. Expected outcomes are the development of liquid-repellent slippery surface coatings that reduce hydrodynamic drag and inhibit marine fouling. This will benefit the fields of advanced manufacturing and smart coatings, ....Biomimetic surface coatings for drag and fouling reduction. This project aims to provide new insights into liquid flow and adsorption at liquid/solid and liquid/liquid interfaces, by using a combination of theoretical predictions, nanoscale techniques and nanofabrication approaches. Expected outcomes are the development of liquid-repellent slippery surface coatings that reduce hydrodynamic drag and inhibit marine fouling. This will benefit the fields of advanced manufacturing and smart coatings, and will underpin a wide range of energy efficient processes and products. Slippery coatings will solve urgent environmental problems of social value by improving the energy and chemical efficiency in fluid flow, heat transfer, secondary oil recovery, microfluidics, and anti-fouling.Read moreRead less
Tailoring metal-organic framework catalysts for carbon dioxide conversion. Reducing the greenhouse gas, CO2, into valuable fuels would be beneficial for relieving energy shortage and improving global sustainability. This project aims to synthesise high-performance heterogeneous catalysts for CO2 conversion by periodic ordering photo-redox metalloligand and thermal-catalytically active metal oxide clusters in metal-organic frameworks (MOFs). This approach is expected to deliver a unique single-si ....Tailoring metal-organic framework catalysts for carbon dioxide conversion. Reducing the greenhouse gas, CO2, into valuable fuels would be beneficial for relieving energy shortage and improving global sustainability. This project aims to synthesise high-performance heterogeneous catalysts for CO2 conversion by periodic ordering photo-redox metalloligand and thermal-catalytically active metal oxide clusters in metal-organic frameworks (MOFs). This approach is expected to deliver a unique single-site metal-organic framework catalyst with high reaction-activity and chemo-selectivity in converting CO2 into valuable chemicals. This advancement will provide significant benefits for Australia’s emerging chemical manufacturing industry, and ultimately leading to a carbon-neutral energy economy and environment.Read moreRead less
Radiative Cooling Tuned to the Spectral and Directional Infra-red Properties of the Atmosphere. Growth in the demand for cooling in Australia is a main driver for new power stations while global warming adds to cooling and refrigeration needs. This project extends Australia's leading expertise in solar control using nanoparticles into the area of active and passive cooling, enabling cooling at night to temperatures well below ambient, with little or no power and low cost. 'Cool' will be stored ....Radiative Cooling Tuned to the Spectral and Directional Infra-red Properties of the Atmosphere. Growth in the demand for cooling in Australia is a main driver for new power stations while global warming adds to cooling and refrigeration needs. This project extends Australia's leading expertise in solar control using nanoparticles into the area of active and passive cooling, enabling cooling at night to temperatures well below ambient, with little or no power and low cost. 'Cool' will be stored simply for use the next day. Our systems also allow efficient and low cost water condensation from the atmosphere. They will be of major benefit to developing countries in warm climate zones. High value products will follow, from paints to low cost cooling technology with energy savings around 50% or more.Read moreRead less