主讲人：Prof. Xuehua Zhang

主持人：方俊锋 教授

开始时间：2020年1月9日下午1:00 （周四）

讲座地址：闵行物理楼226会议室

主办单位：物理与电子科学学院纳光电集成与先进装备教育部工程研究中心

报告人简介： Professor Xuehua Zhang completed her PhD in Biomedical Engineering at Shanghai Jiao Tong University and became a postdoc in Australia. She was an Associate Professor in chemical engineering in RMIT University before she moved from Australia to Canada in 2017. Her research topics cover micro/nanobubbles on surfaces, dilution-triggered liquid-liquid phase separation in confined spaces, chemical reactions of oil nanodroplets, evaporation and de-wetting of multicomponent drops and functional surfaces. Prof. Zhang is a Canada Research Chair (Tier 1) in Soft Matter and Interfaces at the Department of Chemical and Materials Engineering, University of Alberta.

报告内容简介：Droplets at solid–liquid interfaces play essential roles in a broad range of fields, such as compartmentalized chemical reactions and conversions, high-throughput analysis and sensing, and super-resolution near-field imaging. Our recent work focuses on understanding and controlling the nanodroplet formation on solid surfaces. These surface nanodroplets resemble tiny liquid lenses with a typical height of <1 μm and a volume of sub-femtoliters. We have experimentally and theoretically investigated the effects from solvent mixing on the droplet formation under controlled flow conditions. A universal droplet-based platform is developed for determination of partition coefficient in water and oil phases and for fast and sensitive nanoextraction of trace of hydrophobic compounds in aqueous solutions. We further revealed how evaporation of multicomponent drops can be employed to produce a large number of supraparticles with tunable shapes and high porosity on hydrophobic surfaces.