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为搭建我校博士后之间的学术交流平台，促进学术水平提升，学校博士后管理办公室组织开展博士后学术沙龙活动。本次沙龙由我校博士后李群、魏杰、汪红波分享其研究成果，诚挚邀请感兴趣的师生参加。
一、时 间：2019年5月31日（周五）14：30
二、地 点：清水河校区经管楼宾诺咖啡
三、主办单位：电子科技大学博士后管理办公室
四、承办单位：电子科学与工程学院
电子科技大学博士后联谊会
五、活动安排：
报告一
（1）主 题：Quasi-Static Analysis of Microwave Transmission Line Using Conformal Mapping
（2）主讲人：李群 电子科学与工程学院博士后
（3）交流内容：
In this talk, the conformal mapping method is applied to the quasi-static analysis of microwave transmission lines. Firstly, the conformal mapping method is introduced. Then, three types of microwave transmission lines, including the multilayer dielectrics filled coaxial line, conductor-backed connected-ground CPW, and the shielded asymmetrical coplanar stripline (SACPS) will be explained. The SACPS is a kind of quasi-planar microwave integrated transmission lines. The SACPS has the characteristics of supporting the quasi-TEM mode propagation, easy for shunt and series surface mounting of active and passive devices, no need for via holes, without radiation loss, and well suited for millimeter-wave applications. The SACPS is firstly proposed in IEEE TMTT 66(5), 2018. Finally, analytical solutions of two key parameters, namely the relative effective dielectric constant and the characteristic impedance will be derived which are accurate as well as efficient.
主讲人简介：
Qun Li currently works as a Postdoctoral Fellow in the School of Electronic Science and Engineering of University of Electronic Science and Technology of China (UESTC). He obtained his bachelor’s degree in Electronic Information Science and Technology from Southwest Petroleum University in 2012 and Ph. D. degree in Electromagnetic Field and Microwave Technology from UESTC in 2018. His research interests include electromagnetic theory, antenna, and microwave circuits and systems.
报告二
（1）主 题：Novel High Voltage Silicon-Based Power Devices with Low Loss
（2）主讲人：魏杰 电子科学与工程学院博士后
（3）交流内容：
Power semiconductor devices are the essential components determining the efficiency, size, and cost of electronic systems for energy conditioning. High breakdown voltage (BV), low static and dynamic power loss, high reliability, wide safe operation area (SOA) and downsizing are important design targets of power devices. In this talk, the main categories, operation principles, development history and trend of power devices are presented. Among them, MOSFET and IGBT are the most popular and widespread application in both discrete device and integrated devices in the medium-power and high-power range, owing to their good trade-off among high BV, high power, low loss and acceptable frequency. Therefore, the novel structures, new mechanisms and fabrication process, as well as state-of-the-art performances of Si-based MOSFETs and IGBTs to realize the design targets above will be demonstrated in detail.
主讲人简介：
Jie Wei currently works as a Postdoctoral Fellow in the School of Electronic Science and Engineering of University of Electronic Science and Technology of China (UESTC). He obtained his Bachelor degree of microelectronics from UESTC in 2012 and Ph. D. degree of Microelectronics and Solid-Electronics from UESTC in 2018. His research interests include Si- and GaN-based power devices.
报告三
（1）主 题：Mechanism and Application of Friction-induced Nanofabrication
（2）主讲人：汪红波 电子科学与工程学院博士后
（3）交流内容：
The nanoscale control afforded by scanning probe microscopes has prompted the development of a wide variety of scanning probe-based patterning methods. Some of these methods have demonstrated a high degree of robustness and patterning capabilities that are unmatched by other lithographic techniques. However, the deformation, wear contamination, and limited throughput has prevented its exploitation in technological applications. Here, we explored an advanced friction-induced selective etching strategy, has demonstrated excellent fabrication flexibility on different materials and nanostructures. Importantly, it also demonstrates a potential for applications in optical devices, nanoimprint templates, and nanofluidic systems areas.
主讲人简介：
Hongbo Wang currently works as a Postdoctoral Fellow in the School of Electronic Science and Engineering of University of Electronic Science and Technology of China (UESTC). He obtained his bachelor’s degree in Tianjin University of Science and Technology and his Ph.D. degree in School of Mechanical Engineering from Southwest Jiaotong University in 2011 and 2018, respectively. His research interests focus on the nanofabrication technology of semiconductor materials and their applications in optical devices.
电子科技大学博士后管理办公室
2019年5月30日
编辑：罗莎 / 审核：罗莎 / 发布：陈伟
