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加拿大滑铁卢大学姚智伟教授(John T. W. Yeow)学术讲座通知
日期 2018-01-04 15:32  点击:

讲座名称:

Multi-Pixel Field Emission Based X-ray Generators

讲座时间:

2018189:00-10:00 AM

讲座地点:

东三楼东汽报告厅

讲座摘要:

The first concept of multi-source Computed Tomography (CT) systems originated in the 1980s, and opened the way to innovative system concepts in X-ray and computed tomography. Multi-source CT systems offer promising opportunities in system performance. In addition, multi-source X-ray radiographic systems are widely studied, namely for X-ray stereographic imaging, X-ray tomosynthesis imaging, and inverse-geometry imaging. One significant benefit of the multi-source X-ray technology is the ability to fabricate the source array in various two-dimensional configurations. The more complicated distributive source topologies are designed to improve the sampling of projection data, to further improve both in-plane and depth imaging resolution within the constraints of the limited-angle acquisition of projection data. In multi-source systems, the X-ray sources are arranged in an array format, and each source is launched individually. However, current X-ray generators are not suited for these systems because of their large size, huge power requirement, and slow response. This talk will focus on the field emission X-ray technology that enables to the realization of multi-source CT systems.

讲座人简介:

姚智伟是加拿大滑铁卢大学系统设计工程系教授、先进微纳米设备实验室(Advanced Micro-/ Nano- Device Lab)主任, 国家第十批“青年千人计划”入选者。现任加拿大微纳米器件研究主席,IEEE Nanotechnology Council Newsletter 主编、IEEE Nanotechnology Magazine和IEEE Transactions on Nanotechnology副主编。

研究方向:微纳米传感和检测、非线性控制、生物医学工程。研究重点是开发用于诊断和治疗的生物医学仪器设备和用于工业自动化的检测传感设备。姚博士领导的研究团队在碳纳米管排列结构和密度效应等方向展开了深入研究,建立了碳纳米管重定向引起的电子机械力模型,针对不同金属基底碳纳米管场致发射稳定性和可靠性进行了深入的实验研究,为改善场致发射质量和阴极寿命提供了重大机理支撑,并将碳纳米管场致发射应用于生物医学X光透视和新一代CT

John T. W. Yeow received the B.A.Sc. degree in electrical and computer engineering, and M.A.Sc. and PhD. degrees in mechanical and industrial engineering from the University of Toronto, Toronto, ON,   Canada . He is currently a Professor in the Department of Systems Design Engineering at University of Waterloo, Waterloo, ON, Canada . His current research interests are in the field of developing miniaturized biomedical instruments. He is a recipient of the Professional Engineering Ontario Young Engineer Medal, Professional Engineering Ontario Engineering Excellence Award, Natural Science & Engineering Research Canada Innovation Challenge Award, Douglas R. Colton’s Medal of Research Excellence, Micralyne Microsystems Design Award, Ontario Ministry of Research and Innovation’s Early Researcher Award, and University of Toronto Alumni Association 7T6 Early Career Award. He is a Canada Research Chair in Micro/Nanodevices. He is the Editor-in-Chief of the IEEE Nanotechnology Magazine, and an Associate Editor of the IEEE Transactions of Nanotechnology. He is a Fellow of the Engineering Institute of Canada, and a Member of College of New Scholars, Artists and Scientists of the Royal Society of Canada. He is also a 2017 IEEE Nanotechnology Technical Council Distinguished Lecturer.



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