Digital electrical manipulation of liquid marbles

20^th International Conference on Emerging Materials and Nanotechnology

June 25-26, 2018 | Vancouver, Canada

Anderson H C Shum

The University of Hong Kong, Hong Kong

Keynote: J Material Sci Eng

Abstract :

In this talk, I will discuss our studies of the effects of electrical charging on liquid marbles, which are liquid droplets coated by a layer of particles and dispersed in air. These liquid marbles rely on a delicate balance of the interfacial adsorption of the particle layers and have shown numerous interesting interfacial and fluid dynamical phenomena. However, their potential has been limited by the lack of exquisite control of their properties and dynamics in a versatile manner. To impart the control demanded, we investigate the behaviors of the liquid marbles and the particle layers in response to electrical stimulation and elucidate some of the electrically induced interfacial dynamics. Building on the understanding, we construct electrical platforms for actuating and manipulating liquid marbles. We will discuss our progress and suggest potential applications that can benefit from the resulting platform.

Biography :

Anderson Ho Cheung Shum FRSC, associate professor at HKU Mechanical Engineering, received his B.S.E. (summa cum laude) in chemical engineering from Princeton University, S.M. and Ph.D. in applied physics from Harvard University. His research interests include microfluidics, micro scaled fluid flows, and soft matter. He is a recipient of the HKU Outstanding Young Research Award 2016-17 and the HKU Research Output Prize 2017, as well as the Early Career Award 2012 by HK’s Research Grants Council. He is an editorial board member for Scientific Reports (Nature-Springer) and an editorial advisory board member for Bio microfluidics (AIP) and Lab-on-a-Chip (RSC).

E-mail: ashum@hku.hk