Microfabrication of integrated silicon optical cross-switches interfaced with silica optical waveguides. Project aims to fabricate novel silicon based optical switches in the form of cantilevered mirrors integrated to interface with silica optical waveguides integrated collimation lens. Significantly, it paves the way for low cost integration of optical switches with array waveguides for an all-optical dynamically reconfigurable dense wavelength division multiplexing network used in modern broad ....Microfabrication of integrated silicon optical cross-switches interfaced with silica optical waveguides. Project aims to fabricate novel silicon based optical switches in the form of cantilevered mirrors integrated to interface with silica optical waveguides integrated collimation lens. Significantly, it paves the way for low cost integration of optical switches with array waveguides for an all-optical dynamically reconfigurable dense wavelength division multiplexing network used in modern broadband telecommunication systems. International market demand for such devises is enormous. Expected outcomes include the development of arrays of low loss 2x2 integrated optical waveguide cross-switches prototypes, securing the intellectual property rights and disseminating the work internationally.Read moreRead less
New Approaches for Wireless Implantable Biomedical Devices. Wireless biomedical implants of the future will interface with biological systems to perform physiological tasks such as vision restoration, reanimation of paralyzed limbs, and chemical sensing. The potential benefit to society will come not only from alleviating human suffering and improving quality of life, but also by reducing the health care costs now directed to assist people with disabilities such as blindness, stroke and spinal-c ....New Approaches for Wireless Implantable Biomedical Devices. Wireless biomedical implants of the future will interface with biological systems to perform physiological tasks such as vision restoration, reanimation of paralyzed limbs, and chemical sensing. The potential benefit to society will come not only from alleviating human suffering and improving quality of life, but also by reducing the health care costs now directed to assist people with disabilities such as blindness, stroke and spinal-cord injury survivors. Using similar technologies, cochlear implants have already restored functional hearing to over 100,000 deaf patients around the world. The outcomes of the project can also be applied to a variety of other applications such environmental monitoring, security and identification systems. Read moreRead less
A neuromorphic binaural hearing sensor. A neuromorphic binaural hearing sensor will be created. The system includes two cochleae and targeted processing pathways in the auditory brainstem that aid in solving the Cocktail Party Problem: i.e. foreground-background sound separation, sound localisation, and sound recognition. The VLSI circuits will enable real-time implementation of complex auditory models. As we develop our VLSI binaural ear, we will experiment with afferent (feed forward) and ....A neuromorphic binaural hearing sensor. A neuromorphic binaural hearing sensor will be created. The system includes two cochleae and targeted processing pathways in the auditory brainstem that aid in solving the Cocktail Party Problem: i.e. foreground-background sound separation, sound localisation, and sound recognition. The VLSI circuits will enable real-time implementation of complex auditory models. As we develop our VLSI binaural ear, we will experiment with afferent (feed forward) and efferent (feed back) auditory signal processing that is similar to real auditory systems and that demonstrate efficient, effective, and low-power signal processing algorithms for binaural (two-sensor) hearing systems.Read moreRead less
Electronic Auditory Pathway. We will develop electronic building blocks to investigate biological signal processing. In particular, we will investigate the auditory pathway and develop the most accurate electronic model of the biological cochlea and auditory nerve. These will be followed by electronic circuits that model the processing of sensory signals in the brain. Processing signals with neural spikes offers distinct advantages over current analogue and digital signal processing techniques i ....Electronic Auditory Pathway. We will develop electronic building blocks to investigate biological signal processing. In particular, we will investigate the auditory pathway and develop the most accurate electronic model of the biological cochlea and auditory nerve. These will be followed by electronic circuits that model the processing of sensory signals in the brain. Processing signals with neural spikes offers distinct advantages over current analogue and digital signal processing techniques in terms of noise, energy consumption and extraction of temporal information. We will implement the first spike-based models of pitch and timbre perception, and a neural model of speech recognition in noisy environments.Read moreRead less
Dynamic signal processing with currents. Today's digital computers and communications devices, such as mobile phones, contain continuous time filters as necessary and important components. We will investigate an integrated circuit design methodology for the creation of fully programmable versions of such filters. Currently these filters are redesigned for each application and are often external to the IC. This increases the size and cost of the design. Another outcome of the methodology is a cur ....Dynamic signal processing with currents. Today's digital computers and communications devices, such as mobile phones, contain continuous time filters as necessary and important components. We will investigate an integrated circuit design methodology for the creation of fully programmable versions of such filters. Currently these filters are redesigned for each application and are often external to the IC. This increases the size and cost of the design. Another outcome of the methodology is a current domain signal processor. This will be capable of modelling complex systems such as biological neurons and stock option pricing. We will build these systems and interface them with digital computers.Read moreRead less
Microelectronic Applications of Improved Silicon Light Emission. While semiconductor silicon chips have been the workhorse of the microelectronics revolution, more complex semiconductor materials have driven the communications revolution. Australian developments during 2001 have largely dispelled the myth that silicon is fundamentally a poor emitter of light. This project aims to build on this work by developing silicon light emitters suitable for integration into high density integrated circu ....Microelectronic Applications of Improved Silicon Light Emission. While semiconductor silicon chips have been the workhorse of the microelectronics revolution, more complex semiconductor materials have driven the communications revolution. Australian developments during 2001 have largely dispelled the myth that silicon is fundamentally a poor emitter of light. This project aims to build on this work by developing silicon light emitters suitable for integration into high density integrated circuits, adding a new dimension to the capabilities of these circuits, driving microelectronics and the information age to the next stage of development.Read moreRead less
Future generation high-performance radio communications circuits in gallium nitride technology. Techniques will be developed to exploit the potential of an emerging commercial gallium nitride technology for future communication systems. By establishing new knowledge and skill to expand international competitiveness, it will position Australia among the leaders in high performance circuit design, strengthen international collaboration, and allow the development of future high performance wireless ....Future generation high-performance radio communications circuits in gallium nitride technology. Techniques will be developed to exploit the potential of an emerging commercial gallium nitride technology for future communication systems. By establishing new knowledge and skill to expand international competitiveness, it will position Australia among the leaders in high performance circuit design, strengthen international collaboration, and allow the development of future high performance wireless systems. This is an opportunity to diversify to a new technology on a competitive basis. This circuit design business is suited to distance working within the international sector. Improved circuit performance will enable breakthrough discoveries in areas like medical imaging, radar, detection, and instrumentation.Read moreRead less
Achieving high linearity over broad bands in transistor circuits for communication applications. This project provides techniques to achieve the distortion performance required for the next generation communication circuits. By establishing new knowledge and skill within Australia to expand international competitiveness, it will position Australia as the leader in high performance circuit design, strengthen international collaboration, and allow the development of high performance broadband syst ....Achieving high linearity over broad bands in transistor circuits for communication applications. This project provides techniques to achieve the distortion performance required for the next generation communication circuits. By establishing new knowledge and skill within Australia to expand international competitiveness, it will position Australia as the leader in high performance circuit design, strengthen international collaboration, and allow the development of high performance broadband systems. An opportunity will be presented to enter the transistor characterization market on a competitive basis, which is a business suited to distance working within the international sector. Improved circuit performance will enable breakthrough discoveries in areas like radio astronomy, medical imaging, radar and detection, and instrumentation.Read moreRead less
A Skin Detection Micro-Sensor for Face Identification using Color and Stereo Information. The objective of this research is to develop a micro-sensor for face identification, using color and stereo information. The micro-sensor chip performs a real-time search of the scene to locate human skin for subsequent face detection. This micro-sensor could also be used for gesture recognition, lip reading, monitoring driver's hypo-vigilance or tracking a person in a crowd. The chip image-recognition capa ....A Skin Detection Micro-Sensor for Face Identification using Color and Stereo Information. The objective of this research is to develop a micro-sensor for face identification, using color and stereo information. The micro-sensor chip performs a real-time search of the scene to locate human skin for subsequent face detection. This micro-sensor could also be used for gesture recognition, lip reading, monitoring driver's hypo-vigilance or tracking a person in a crowd. The chip image-recognition capabilities will spur the development of a new generation of consumer products with "intelligent eyes".
Read moreRead less
Large-scale Parallelization of Neural Stimulation in a Visual Prosthesis. Over time, engineers have been able to treat a large number of disorders through new technologies. For example, the deaf can now hear again through cochlear implants. Similar efforts to provide vision to the blind, however, have met with difficulties owing to the high quantities of sites that must be stimulated to provide 'useful' vision. This study addresses the important issues relating to the delivery of large quantitie ....Large-scale Parallelization of Neural Stimulation in a Visual Prosthesis. Over time, engineers have been able to treat a large number of disorders through new technologies. For example, the deaf can now hear again through cochlear implants. Similar efforts to provide vision to the blind, however, have met with difficulties owing to the high quantities of sites that must be stimulated to provide 'useful' vision. This study addresses the important issues relating to the delivery of large quantities of electrical stimulations to surviving nerves in the eyes of blind patients in an effort to devise a beneficial visual prosthesis or 'bionic eye'. The outcomes of this study could substantially enhance Australia's already prominent reputation in neurostimulation and provide much needed treatments to vision disorders.Read moreRead less