报告题目：

Lift Force-enhanced Pinched Flow Fractionation for Continuous Microfluidic Particle Separation

报告人:         Professor Xiangchun Xuan

Department of Mechanical Engineering, Clemson University, USA

时间：2015年6月15日(周一)  14: 30         

地点：中国科学院力学研究所主楼344会议室

报告摘要：

Separating target particles or cells from a heterogeneous mixture is often critical to many chemical and biomedical applications. Pinched flow fractionation (PFF) is a microfluidic technique that utilizes the laminar flow profile to continuously separate particles by size. It requires particles be tightly focused against one sidewall of a microchannel, such that the centers of particles can locate at size-dependent streamlines. Due to the influence of particle dispersion, PFF typically has a limited particle throughput and separation resolution. Our group has recently demonstrated a significantly enhanced PFF by the use of the inherent wall and/or flow induced lift force in straight rectangular microchannels. Specifically, I will present our recent results on the continuous particle separation via (a) the wall induced electrical lift force in electrokinetic flow (elPFF), (b) the wall/flow induced inertial lift force in hydrodynamic flow (iPFF), and (c) the wall/fluid induced elastio-inertial lift force in viscoelastic flow (eiPFF). All three types of PFF-based particle separations can take place in one identical microchannel, and cover the range of Reynolds number from the order of 1 to the order of 100.

报告人简介：

Dr. Xuan is currently an Associate Professor of Mechanical Engineering at Clemson University. He received his PhD degree from the Department of Mechanical and Industrial Engineering at University of Toronto in 2006 and Bachelor of Engineering degree from University of Science and Technology of China in 1995. Dr. Xuan was a recipient of NSF CAREER award in 2012. His research interests cover micro/nanofluidics fundamentals and lab-on-a-chip applications. He has published over 90 articles in leading international journals with a total of over 3,000 citations and an h-index of 35 based on Google Scholar.

报告联系人：沈楠  (office@lnm.imech.ac.cn 82543935)