题目：Relaxation of “soft things”

报告人：美国Rutgers University 大学  林灏教授

时间：2016年6月13日14:00

地点：综合实验1号楼602会议室

摘要：

A universal theme in mechanics is to query the stress-strain relation in materials, so as to obtain important mechanical properties. To achieve such, a deforming force is often applied to the object of interest, so as to measure the strain response. In this study, I will point to an interesting aspect of such process, namely, shape relaxation post-deformation. After removal of external forcing, the physical process is much simplified, and lends itself to mathematical analysis. I will focus particularly on the ellipsoids, which can be regarded as the leading-order geometric mode for near-spherical deformations. I will present experimental data on vesicles, cells, and cell aggregates, and the pertinent analytical solutions to correlate the data. I will demonstrate that ellipsoidal relaxation exhibits consistently simple behavior, similarity, and regime separation.

报告人简介：

Dr. Hao Lin received his BS degree in Mechanics from Peking University in 1996, and PhD in Mechanical Engineering from University of California, Berkeley in 2001. He was a postdoctoral fellow in the Center for Turbulence Research at Stanford University from 2001 to 2003, and a postdoctoral researcher in the Mechanical Engineering department from 2003 to 2005. He joined the faculty of Mechanical and Aerospace Engineering at Rutgers University in July, 2005. He is a recipient of the NSF CAREER Award in 2008, and the Presidential Early Career Award for Scientists and Engineers (PECASE) in 2010.