Woodruff School of Mechanical Engineering

Mechanical Engineering Seminar

Title:

Field induced particle separation in microfluidic devices

Speaker:

Dr. Xiangchun Xuan

Affiliation:

Department of Mechanical Engineering, Clemson University

When:

Thursday, September 20, 2018 at 11:00:00 AM

Where:

Love Building, Room 210

Host:

Dr. Minami Yoda and Dr. Alexander Alexeev
minami.yoda@me.gatech.edu
404.894.6838

Abstract

Separating particles (both biological and synthetic) from a heterogeneous mixture is critical to many biomedical, chemical, and environmental applications. Continuous-flow particle separation has been achieved in microfluidic devices by the use of a variety of externally imposed force fields, ranging from the ubiquitous gravity to electric, acoustic, optic and magnetic forces etc. Among this type of active approaches, the electric field-driven particle separation relies on electrokinetic phenomena and dielectrophoresis where the former pumps the particle solution via fluid electroosmosis and particle electrophoresis while the latter directs particles along or against electric field gradients. The magnetic field-driven particle separation relies on magnetophoresis that deflects particles either along or against magnetic field gradients. Microfluidic particle separation has also been implemented by the use of the inherent flow field-induced lift force, which can take place in either a Newtonian or a non-Newtonian fluid and is a passive approach. In this talk, I will present the completed and ongoing projects in my group on the electric field, magnetic field, and flow field-induced separations of particles in microfluidic devices.


Biography

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 the fundamentals and applications of microfluidics with special interest in particle manipulations. He has published over 100 journal articles with a Web of Science h-index of 36.

Notes

Refreshments will be served.