Topic：Colloidal Particles at Fluid Interfaces:Fundamentals and Applications

Speaker：Professor To Ngai

Time：PM 14:30-16:00, 17th June, 2024

Venue：Dongtang Hall, BuildingNo.13, Wushan Campus

Welcome all the teachers and students to attend!

Abstract: 

The adsorption of colloidal particles at fluidinterfaces to stabilize emulsions or foams has been known for over a century.Today, particle-stabilized emulsions, often referred to as Pickering emulsions,are receiving growing attention as they have been widely used in personal care productsand food industry. To design and engineer the structure and properties ofmaterials based on these colloidal systems for applications, it is important tounderstand the behaviour of particles at fluid interfaces at thesingle-particle level and to establish the relationship between the microscopicbehaviour of interfacial particles and the bulk properties of particle-adsorbedinterfaces. In this talk, I will present background information on thebehaviour of particles at fluid-fluid interfaces and highlight the developmentof various particles for Pickering emulsion stabilization. Additionally, I willintroduce and discuss the functional materials that can be prepared by usingPickering emulsion as templates.

About the speaker:

To NGAI now is Professor in the Department ofchemistry, Assistant Dean (Research) of the Faculty at the Chinese Universityof Hong Kong (CUHK), and Fellow of the Royal Society of Chemistry (FRSC). Hereceived his B.Sc. in chemistry at CUHK in 1999. In 2003, he obtained the Ph.Dat the same university, where he worked on light scattering and polymerinteraction in solution. He moved to BASF (Ludwigshafen, Germany) in 2003 asthe postdoctoral fellow for two years, working on colloids and surfacechemistry. After a short postdoctoral training in the Chemistry Department atthe University of Minnesota in 2005, he joined the Chemistry Department at CUHKin 2006 as a research assistant professor. He has been appointed as anassistant professor in 2008, and promoted to associate professor in 2012. In2017, he was promoted to Professor. His current research interests centeraround the colloids, surface chemistry, polymers and soft matter. Prof. Ngaihave published over 200 papers with total citations of 8600 and an h-index of52 (Google Scholar). He received the Chemical Society of Japan (CSJ)Lectureship Award 2020, and the Paul J. Flory Research Prize 2023 at the 29thPolychar World Forum on Advanced Materials in Nice, France.