Title: INTERFACE PROFILE NEAR THE CONTACT LINE IN ELECTRO-WETTING ON DIELECTRIC
Abstract: We consider a charged droplet sitting on a dielectric substrate and study the static profile of the interface near the contact line. We first derive the governing equations using the principle of minimumenergy, then discuss the distinguished limit of the model as the dimensionless parameters β and d go to zero with d/β = O(1), where β is the (rescaled) square of the imposed electrical potential and d is the thickness of the insulator. Analysis of the inner problem, which governs the interface profile near the contact line, shows the existence of a well-defined apparent contact angle. Significant bending of the interface is observed near the contact line. The apparent contact angle depends on the applied electrical potential and the thickness of the insulator, and the relation agrees well with the Lippmann-Berge equation.
地点: 苏州大学本部天元讲堂
时间: 2019/05/24 09:30-10:30
报告人简介：
任维清，新加坡国立大学教授及新加坡科技局高性能计算研究院资深科学家。2002年毕业于纽约大学Courant研究所并获博士学位。先后在普林斯顿高等研究院和普林斯顿大学从事博士后研究工作，2005年至2011年在纽约大学Courant数学科学研究所担任助理教授。任教授主要从事科学计算的研究, 在稀有事件的理论及计算方法，多尺度算法和分析，以及流体中的滑移接触线问题等领域做出重要贡献。任教授曾获Alfred P. Sloan Research Fellowship (2007) 和冯康科学计算奖 (2015)。