时间：2013年12月18日13:30

地点：科技创新大楼C501室

演讲学者：美国中佛罗里达大学机械和航空系 邓巍巍博士

报告题目：静电喷雾方法在处理先进材料方面的应用

静电喷雾方法在处理先进材料方面的应用

邓巍巍

美国中佛罗里达大学机械和航空系

Processing Advanced Materials using Electrospray

Weiwei Deng

Department of Mechanical and Aerospace Engineering,

University of Central Florida

Abstract

Electrospray is an emerging technique widely used in analytical chemistry and advanced materials processing. Electrospray can atomize liquids into quasi-monodisperse droplets in a wide size range (from micrometers to essentially ions). One main drawback of the electrospray is the low flow rate emitted by each source. Our group overcame this obstacle through multiplexing the number of electrospray sources by 1000 times and potentially more. The scalability we demonstrated enables industrial scale of materials processing. In this seminar, I will first discuss the wide range of materials that can be processed by electrospray, such as the polymer derived ceramics for sensors in harshenvironments and fluorine polymers aimed for conformal coating of microscopic surface textures that reducehydrodynamic drag. I will also report our recent finding on using electrospray to fabricate organic solar cells. We generated semi-organized poly(3-hexylthiophene) (P3HT) nano pillars that may lead to superior charge mobility and better solar cell performance.In contrast to spin coating, the electrospray technique is compatible with roll-to-rollprocess and may eventually lead to low cost manufacturing of large format organic electronics.

About the speaker

Dr. Weiwei Deng is an assistant professor in the Department of Mechanical and Aerospace Engineering at the University of Central Florida. He obtained his B.S. degree from Tsinghua University in 1999 and Ph.D. from Yale University in 2008. His research interest is fluid mechanics, electrospray atomization, and processing of advanced materials through electrospray.