Material boundaries in ultrasonics: New methods and in vitro studies in biomedical phantoms. Ultrasound is an indispensable part of healthcare worldwide. The next wave of applications will see ultrasound pulses used to closely probe suspected disease sites and to directly manipulate bioactive agents. For safe and effective use of such techniques it is essential to know the ultrasound field at the disease site. This project will develop simulation methods to achieve the fast, accurate and case-sp ....Material boundaries in ultrasonics: New methods and in vitro studies in biomedical phantoms. Ultrasound is an indispensable part of healthcare worldwide. The next wave of applications will see ultrasound pulses used to closely probe suspected disease sites and to directly manipulate bioactive agents. For safe and effective use of such techniques it is essential to know the ultrasound field at the disease site. This project will develop simulation methods to achieve the fast, accurate and case-specific results required. Community healthcare will benefit, through better diagnostic capabilities and customized treatment. Australia is well placed to profit further from this research, in view of the growing worldwide demand for more sophisticated, knowledge-based techniques in medicine.Read moreRead less
The effect of vessel wall structures on ultrasonic flow velocity measurements. The flow velocity within a nearly cylindrical vessel is often measured using an external ultrasound transducer via the Doppler principle. Thick vessel walls may present acoustically mismatched structures. This project aims to determine how such walls redistribute the energy in an interrogating ultrasound beam, and how this in turn affects the measurement of flow velocities. This is a fundamental issue, especially imp ....The effect of vessel wall structures on ultrasonic flow velocity measurements. The flow velocity within a nearly cylindrical vessel is often measured using an external ultrasound transducer via the Doppler principle. Thick vessel walls may present acoustically mismatched structures. This project aims to determine how such walls redistribute the energy in an interrogating ultrasound beam, and how this in turn affects the measurement of flow velocities. This is a fundamental issue, especially important in vascular disease where blood flow and blood vessels are affected by wall irregularities and lesions. The new knowledge generated by this project will have practical importance and, by identifying achievable outcomes, potentially major cost savings, in medical ultrasound.Read moreRead less
STRUCTURAL ANALYSIS OF SILICON ON SAPPHIRE THIN FILMS GROWN USING SOLID-PHASE EPITAXIAL TECHNIQUES. Devices based on silicon-on-sapphire processing are potentially faster and are prepared with fewer processing steps than those based on conventional silicon processing technology. However, silicon-on-sapphire films prepared by traditional methods are unsatisfactory due to the high densities of defects they contain. The development of solid phase epitaxial processing has lead to significant increas ....STRUCTURAL ANALYSIS OF SILICON ON SAPPHIRE THIN FILMS GROWN USING SOLID-PHASE EPITAXIAL TECHNIQUES. Devices based on silicon-on-sapphire processing are potentially faster and are prepared with fewer processing steps than those based on conventional silicon processing technology. However, silicon-on-sapphire films prepared by traditional methods are unsatisfactory due to the high densities of defects they contain. The development of solid phase epitaxial processing has lead to significant increases in performance. This project will characterize the structures of films grown by this new process, and relate them to both the processing conditions and device performance. A greater understanding of the relationship between processing, structure and properties will assist the commercial development of these devices.Read moreRead less
UNSW-Harvard-Cambridge Partnership in Semiconductor Nanostructures for Quantum Computing and Quantum Science. Breakthrough nanotechnologies based on quantum mechanics promise important new devices with many applications in information and communications technologies. For example, quantum computers promise an enormous increase in computing power, allowing fast and complex processing in areas such as database searching, gene sequencing and weather modeling. This new collaboration brings together r ....UNSW-Harvard-Cambridge Partnership in Semiconductor Nanostructures for Quantum Computing and Quantum Science. Breakthrough nanotechnologies based on quantum mechanics promise important new devices with many applications in information and communications technologies. For example, quantum computers promise an enormous increase in computing power, allowing fast and complex processing in areas such as database searching, gene sequencing and weather modeling. This new collaboration brings together researchers from major national Centres in Australia (UNSW), Great Britain (University of Cambridge) and the USA (Harvard University) to tackle one of modern sciences most challenging problems - how to control and manipulate quantum states.Read moreRead less
Engineering Ultra-low Disorder Semiconductor Quantum Nanostructures. The multi-trillion dollar semiconductor industry drives the explosive growth in information technology that we have witnessed over the past 25 years. This proposal will provide a significant breakthrough by develop a new class of ultra low disorder 'quantum dot transistors' that will be of benefit to Australia's ongoing efforts in semiconductor nanotechnology and quantum information science, allowing us to play a role in the fu ....Engineering Ultra-low Disorder Semiconductor Quantum Nanostructures. The multi-trillion dollar semiconductor industry drives the explosive growth in information technology that we have witnessed over the past 25 years. This proposal will provide a significant breakthrough by develop a new class of ultra low disorder 'quantum dot transistors' that will be of benefit to Australia's ongoing efforts in semiconductor nanotechnology and quantum information science, allowing us to play a role in the future development of nanoscale and quantum electronics. This research program will bring together Australian researchers and students to work with leading international universities in the USA and New Zealand, and a leading Japanese industrial research facility - Nippon Telegraph and Telecommunications.Read moreRead less
Nanospintronics - Spin Transport in Semiconductor Nanostructures. The multi-billion dollar semiconductor industry drives the explosive growth in information technology that we have witnessed over the past 25 years. This proposal will provide a significant breakthrough by developing a new class of spintronic devices that will be of benefit to Australia's ongoing efforts in semiconductor nanotechnology and quantum information science, allowing us to play a role in the future development of nanosca ....Nanospintronics - Spin Transport in Semiconductor Nanostructures. The multi-billion dollar semiconductor industry drives the explosive growth in information technology that we have witnessed over the past 25 years. This proposal will provide a significant breakthrough by developing a new class of spintronic devices that will be of benefit to Australia's ongoing efforts in semiconductor nanotechnology and quantum information science, allowing us to play a role in the future development of nanoscale and quantum electronics. This research program will provide training for Australian students in a cutting-edge semiconductor research facility, and involve linkages with leading international universities including Massey University (NZ), NTT Basic Research Labs (Japan) and the University of Bochum (Germany).Read moreRead less
Nanoscale electronic devices: bringing sample design, fabrication, test and theory together. The multi-trillion dollar semiconductor industry drives the explosive growth in information technology that we have witnessed over the past 25 years. This proposal will support Australia's ongoing efforts in semiconductor nanotechnology and quantum information science, allowing us to play a role in the future development of nanoscale and quantum electronics. This research program will bring together Aus ....Nanoscale electronic devices: bringing sample design, fabrication, test and theory together. The multi-trillion dollar semiconductor industry drives the explosive growth in information technology that we have witnessed over the past 25 years. This proposal will support Australia's ongoing efforts in semiconductor nanotechnology and quantum information science, allowing us to play a role in the future development of nanoscale and quantum electronics. This research program will bring together Australian researchers and students to work with leading international universities in the UK, Germany, the USA and New Zealand, allowing access to experimental facilities that simply do not exist in Australia. Read moreRead less
Hole nanoelectronics - new concepts for spintronic devices. This proposal will support a new basic research initiative in an area with enormous potential for the trillion dollar semiconductor industry - an industry that is well aware of the need to find a replacement for the conventional transistor beyond 2020. This research program will bring together Australian researchers and students to work with leading international universities in Germany and England, including the renowned Cavendish Labo ....Hole nanoelectronics - new concepts for spintronic devices. This proposal will support a new basic research initiative in an area with enormous potential for the trillion dollar semiconductor industry - an industry that is well aware of the need to find a replacement for the conventional transistor beyond 2020. This research program will bring together Australian researchers and students to work with leading international universities in Germany and England, including the renowned Cavendish Laboratory at Cambridge University. This project will position Australia to play a leading role in developing future quantum and spin-based technologies that have the potential to be as powerful over the next 50 years as conventional transistors have been over the past 50 years.Read moreRead less
Self-Assembled Semiconductor Nanowires: A New Platform for Spintronic Devices. The multi-billion dollar semiconductor industry drives the extraordinary growth in information technology that we have witnessed in recent decades. This Fellowship will establish a new program to build electronic devices using tiny semiconductor 'nanowires'. It draws on UNSW's international reputation in nanoelectronics research, strongly enhances Australia's existing investment in the growth of nanowires at ANU, an ....Self-Assembled Semiconductor Nanowires: A New Platform for Spintronic Devices. The multi-billion dollar semiconductor industry drives the extraordinary growth in information technology that we have witnessed in recent decades. This Fellowship will establish a new program to build electronic devices using tiny semiconductor 'nanowires'. It draws on UNSW's international reputation in nanoelectronics research, strongly enhances Australia's existing investment in the growth of nanowires at ANU, and will place Australia at the forefront of nanowire research on the international stage. This project will contribute strongly to Australia's ongoing efforts in semiconductor nanotechnology and quantum information science, and allow us to play a leading role in the development of next-generation computer technologies.Read moreRead less
Correlated electron states in ultra high purity quantum transistors. Ultra-fast transistors play a decisive role in modern telecommunications and are found in everything from mobile telephones to HD television. The rapid advances in transistor technology and its impact on society has recently been recognised by the award of the 2000 Nobel Prize in Physics for electronic device design. However the rapid advances in technology have reached the stage where unexpected new phenomena are being observe ....Correlated electron states in ultra high purity quantum transistors. Ultra-fast transistors play a decisive role in modern telecommunications and are found in everything from mobile telephones to HD television. The rapid advances in transistor technology and its impact on society has recently been recognised by the award of the 2000 Nobel Prize in Physics for electronic device design. However the rapid advances in technology have reached the stage where unexpected new phenomena are being observed in extremely high quality transistors that cannot be explained by existing theories. This proposal addresses this imbalance and aims to develop powerful theoretical tools to investigate unexplained quantum effects in ultra-high quality transistors.Read moreRead less