专用集成电路与系统国家重点实验室
讲座信息
Electric Manipulations on an Electro-Microfluidic Platform
通用電控微流體平台
报告人：Shih-Kang Fan（Department of Mechanical Engineering, National Taiwan University）
时间：2013年8月12日（周一）10:00-11:00
地点：邯郸校区微电子学楼B213会议室
Abstract:
Manipulating liquids and particles therein is an essential task in microfluidics. Amongall the manipulations, the electric means is a promising one with the features of compact systemsize, simple device fabrication and packaging because external liquid pumps and physicalmicrochannels are not necessary. In this presentation, two important electric manipulations areintroduced, including electrowetting-on-dielectric (EWOD) and dielectrophoresis (DEP). On theone hand, EWOD efficiently varies the contact angle of aqueous droplets or droplets withsufficient conductivity/permittivity by voltage application across a dielectric layer between anelectrode and the liquid droplet. It has been widely studied in droplet actuations for theapplications of droplet-based lab-on-a-chip, liquid lenses, and displays. On the other hand, DEPdrives polarizable particles suspended in a liquid medium by non-uniform electric fields as wellas pumps liquids with a high permittivity toward the high electric field regions with a lowpermittivity. Based on the integration of EWOD and DEP, we have recently developed severalfunctions demonstrating that the electric manipulations are general for microfluidics. In thepresented devices, electric manipulations would be applied to (1) objects on different scales(droplets and particles), (2) droplets with different conductivities (water and oil droplets), and (3)liquids in different formations (discrete droplets and continuous virtual microchannels).
Bio:
Shih-Kang Fan received the B.S. degree from National Central University, Taiwan, in 1996, theM.S. and Ph.D. degrees from University of California, Los Angeles (UCLA), USA, in 2001 and2003, respectively.
He joined the faculty at the Institute of Nanotechnology, National Chiao Tung University(NCTU), Taiwan, as Assistant Professor in 2004 and was promoted to Associate Professor in2009. He was with the Department of Materials Science and Engineering and the Department ofMechanical Engineering at NCTU between 2010 and 2012. Since 2012, he has worked asAssociated Professor in the Department of Mechanical Engineering at National TaiwanUniversity (NTU), Taiwan. Dr. Fan is the recipient of the two most prestigious younginvestigator awards in Taiwan, including 2011 National Science Council Ta-You Wu MemorialAward and 2012 Academia Sinica Research Award for Junior Research Investigators. Hisresearch interests focus on electric manipulations of microfluidics for lab-on-a-chip and electro-opticalapplications.
