Prof. I-Wei Chen (陈一苇)
Department of MSE, University of Pennsylvania

2008年8月13日 (星期四)  2:30 PM
四号楼十四层第二会议室

　  陈一苇教授：1980年获麻省理工获博士学位，现宾夕法尼亚大学材料科学与工程系Skirkanich讲座教授。在陶瓷科学与工程以及纳米生物医学相关的先进功能材料领域中取得了卓越的研究成果，发表150多篇科技论文，其中3篇刊登于英国《Nature》杂志，80多篇刊登于《美国陶瓷学会会刊》。最近15年中连续当选为引用率最高的陶瓷学家和材料学家之一。在1990－1994年期间，在所有材料学家中其论文总引用率名列第24位，单篇平均引用率列第7位。1991和2004年当选美国陶瓷学会院士（Fellow）和世界陶瓷学院院士。2006年获得美国陶瓷学会基础研究领域的最高奖项Sosman Award。

联系人：陈立东  黄富强
 
Abstract

Three New Problems in Ceramic Diffusion

Prof. I-Wei Chen

　  Skirkanich Professor of Materials Innovation, Department of Materials Science and Engineering, University of Pennsylvania

　  Diffusion in ceramics is central to the control of ceramic fabrication and applications, as it impacts sintering, grain growth, creep, ionic conductivity, microstructure development and many other phenomena. Here we investigate three new diffusion problems that challenge our conventional understanding yet point to new opportunities in processing and energy technology. These problems address three questions: Is it possible to densify without grain growth? Is it possible for a neutral object to migrate in a uniform electrical field? Is grain growth influenced by electrical current? The answers to these questions will be provided by dramatic experimental findings along with theoretical rationalization.