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报告题目： |
“Atom-Like” defects in wide bandgap semiconductors for sensing and imaging at the nanoscale |
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报告人： |
Stefania Castelletto |
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报告人单位： |
Royal Melbourne Institute of Technology University（RMIT） |
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报告时间： |
2017年6月13日10:30 |
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报告地点： |
引力中心三楼会议室 |
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报告人简介： |
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Dr Castelletto is currently Senior Lecturer in the School of Engineering at the Royal Melbourne Institute of Technology University (Melbourne). She is Adjunct Associate Professor for research in the Faculty of Science, Engineering and Technology at Swinburne University of Technology in Hawthorn, Centre of Microphotonics and honorary fellow at the University of Melbourne School of Physics.Her present major focus of research is study/engineering of deep defects in wide-band gap semiconductors for quantum technologies, magnetic sensing at the micro/nanoscale. Additionally she is working in renewable energy sector. |
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报告摘要： |
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Defects are common in many materials and some were regarded mostly as detrimental in device fabrications. Recently wide-band gap semiconductors such as diamond and now silicon carbide (SiC), proved to harbour “atom-like” intra-band gap colour centres revealed to be a disruptive discovery for nanoscale sensing in physics, biology and quantum technology.
I will discuss equivalent defects in silicon carbide (SiC), whose functionalities we recently discovered. SiC is more amenable for device fabrication and engineering applications than diamond and holds promises to advance these technologies. In particular, while for pure scientific curiosity these defects can occur “naturally” or unintentionally in the as grown synthetic and natural material, for their exploitation it is required to controllably fabricate them and integrate them in devices or nanomaterials. I will present our results in engineering single photon emission in bulk SiC, nanoscale SiC and in producing a quantum light emitting diode based on some of these SiC defects. An outlook on current efforts to achieve integrated quantum nanophotonics based on silicon carbide microresonators and metamaterials will be provided and its potential in solid state maser applications.
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