学术讲座《Modeling hydrogel mechanics with swelling and fluid flow》

应我院许晓阳教授邀请，加拿大不列颠哥伦比亚大学James J. Feng教授将于2024年11月1日来我校访问交流，并作学术报告，欢迎各位师生参加。

报告题目：Modeling hydrogel mechanics with swelling and fluid flow

报告人：James J. Feng 教授

报告时间：2024年11月1日09：00 – 11：00

报告地点：雁塔校区科技大厦09A16

报告摘要：Hydrogels are polymer networks swollen by an aqueous solvent. For their softness, porosity and biocompatibility, they are finding exciting applications in many fields, e.g., as sensor and actuator, and as cell scaffolds in tissue engineering. Two aspects of hydrogel mechanics have been studied separately in the past. The first is the swelling of gels in a quiescent solvent bath triggered by an environmental stimulus such as a change in temperature or pH, and the second is the solvent flow around and into a gel, driven by an external pressure gradient or moving boundary. As both aspects coexist and indeed interact with each other in emerging applications, we have developed a poroelasticity model that integrates these two aspects into a single framework. In this talk, I will first describe the theoretical model, and then demonstrate how the coupling between the two gives rise to novel physics in relatively simple one-dimensional and two-dimensional flows.

* Joint work with Zelai Xu (UBC) and Pengtao Yue (Virginia Tech). Related publication: Xu et al., A theory of hydrogel mechanics that couples swelling and external flow. Soft Matter 20, 5389-5406 (2024).

报告人简介：James J. Feng received his B.S. (1985) and M.S. (1988) degrees from Peking University in Beijing, and his Ph.D. (1995) from the University of Minnesota, all in Fluid Mechanics. After a postdoctoral stint at the University of California, Santa Barbara, he was appointed an associate professor in 1998 at the Levich Institute for Physicochemical Hydrodynamics in New York City. In 2004, he moved to the University of British Columbia (UBC) in Vancouver, Canada, with a joint appointment in Chemical and Biological Engineering and Mathematics. He is a fellow of the American Physical Society, and a recipient of the CAIMS Research Prize (Canadian Applied and Industrial Mathematics Society). His current research covers multiphase and interfacial fluid dynamics, and biomechanics of cells and tissues.