高分子科学前沿讲座2019年第十五期-Prof. Dr. Frank Scheffold(赵江组邀请)

文章来源: 发布时间:2019-10-30

高分子物理与化学实验室将于11月5日(星期二)上午10:00在5#229会议室召开高分子科学前沿讲座2019年第十五期,本次由赵江老师组邀请Prof. Dr. Frank ScheffoldDepartment of Physics and Fribourg Center for Nanomaterials, University of Fribourg,  Switzerland)作报告,具体内容请您参见附件。欢迎各位老师、同学到场参加!

 

Abstract: Information on mesoscopic length scales is required to characterize the structural and dynamic properties of soft materials, polymers, liquid crystals, small particles and droplets. Static and dynamic light scattering (SLS/DLS) experiments in the single scattering regime can provide such information. In many systems, however, these powerful techniques or affected or fail due to multiple scattering of light. Here I will discuss several experimental innovations that have emerged over the last two decades to overcome such limitations. New concepts and technological advances have led to a more widespread application of methods such as 3D static and dynamic light scattering (3D LS) as well as diffusing wave spectroscopy (DWS). To illustrate their use and range of applications, I will discuss some examples taken from our research and of others. The examples I will discuss are the study of thermosensitive microgel particles, strongly interacting charged colloids and emulsions, and the microrheology of protein solutions. I will also comment briefly on the light scattering from liquid crystals and liquid crystal droplets using 3DDLS and DWS.

Biography: Prof. Frank Sheffold received his PhD degree in 1998 from University of Konstanz, Germany. Afterwards, he started his career in University of Fribourg. He is now a full professor in experimental physics, the Chair of ‘Soft Matter and Photonics’ in Department of Physics, University of Fribourg. His researches include physics of colloidal dispersions, aggregation and gelation in concentrated particle suspensions; optical microrheology of complex fluids, biopolymer solutions and gels; static and dynamic light scattering, diffusing wave spectroscopy (DWS); wave propagation in random media, photonic bandgaps; statistical optics and hyperuniformity; biomedical optical imaging, nano- and meso-scale optics; binary polymer melts: surface segregation and wetting.