报告题目：Laser direct writing and photonic manufacturing for wide-angle imaging, energy devices and sensing applications

报 告 人：Prof. Anming Hu

University of Tennessee Knoxville

主 持 人：孙洪波 教授

报告时间：2015年12月23日10:00

报告地点：唐敖庆楼D314报告厅

主办单位：电子科学与工程学院

集成光电子学国家重点联合实验室

Biography: Prof. Anming Hu received his Ph. D degree from the Department of Physics and Astronomy, University of Waterloo, Canada in 2008, after which he joined Department of Mechanical and Mechatronics Engineering, University of Waterloo as a research assistant professor. In 2012 He was appointed as a chair professorship in Institute of Laser Engineering, Beijing Institute of Technology, China. Since November, 2013 he joined the department of mechanical, aerospace and biomedical engineering at the University of Tennessee Knoxville, USA, as an assistant professor. His current research interests include laser 3D printing, micro-nano-manufacturing, nanojoining, nanotechnology for energy devices, flexible electronics and water treatment.

Abstract: We pursue unique approaches with femtosecond fiber laser direct writing and relevant photonic manufacturing in developing various micro-nano-devices for microelectronics, energy and sensing applications. In this seminar, I will present our research progresses on three directions: laser direct writing of microball lenses with super-wide angle imaging, developing innovative Au/reduce graphene super-capacitors with high rates and fast response, and sensors directly written on polyimide. Microball lens created inside a polymer material displays tunable focal lengths with varying laser parameters. Au/graphene supercapacitors reach superior rate capabilities (71% and 50% of capacitance retention for the charging rate increase from 0.1 V s-1 to 10 V s-1 and to 100 V s-1, respectively) and outstanding cycle stability (10,000 cycles). Both supercapacitor array and 3D supercapacitors have been developed. High performance supercapacitors can find attractive applications in portable device, wearable electronics and biomedical microsystems. Laser-direct writing sensors on polyimide display supersensitive in detecting dimethyl methylphosphonate (DMMP), a chemical warfare agent.