加拿大McMaster University物理与航空系史安昌教授来访
应化学工程国家重点实验室（浙江大学）邀请，加拿大McMaster University物理与航空系史安昌教授于2007年7月4-6日访问本室，并作学术报告。
报告题目：Confined Self-Assembly of Block Copolymers
报告地点： 2007年7月5日（星期四）上午10:00 - 11:00
报告地点：玉泉校区 教十 4115
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报告摘要：
Confined Self-Assembly of Block Copolymers
An-Chang Shi
McMaster University
Hamilton, Ontario Canada L8S 4M1
Spontaneous formation of ordered structures from amphiphilic molecules has attracted tremendous attentions in the last decades. Among the many different amphiphilic systems, block copolymers with their rich phase behavior and ordering transitions have become a paradigm for the study of structural self-assembly. For the simplest case of diblock copolymers, which are linear polymers composed of two different sub-chains (A and B blocks), a variety of ordered bulk phases, including lamellae, hexagonally-packed cylinders, body-centered-cubic spheres and a bicontinuous network structure called gyroid, are observed. In a physically confined environment, structural frustration, confinement-induced entropy loss and surface interactions can strongly influence the molecular organization. In particular, it is possible that confinement can lead to unusual morphologies which are not accessible in the bulk, thus providing opportunities to engineer novel structures. For confined asymmetric diblock copolymers, a rich variety of novel morphologies, ranging from helices to toroids to complex networks, is predicted.
The combination of theoretical studies with experiments demonstrates that confined self-assembly of amphiphilic molecules provides a robust method to produce nanoscopic structures which are not accessible in the bulk phases.
史安昌简介： 1982 年毕业于复旦大学物理系，通过 CUSPEA 计划赴美留学， 1988 年博士毕业于 University of Illinois at Urbana-Champaign 物理系，现为加拿大 McMaster University 物理与航空系教授，复旦大学长江讲座教授，南开大学特聘讲座教授。 NSERC Industrial Fellow, 1992-1994 ； Premier's Research Excellence Awards, 2000 ； T.D. Lee Lecturer, Graduate School of the Chinese Academy of Sciences, 2004 ； W. F. James Professor of Pure and Applied Sciences, St. Frances Xavier University, 2006
主要研究领域为：
• Statistical mechanics of structures, phase transitions, and dynamics in complex soft matter systems including polymers, colloids, liquid crystals, surfactant solutions, biopolymers and membranes.
• Dynamics of polymeric systems. Theory of polymerization kinetics.
• Self-assembly and pattern formation in biological systems.
化学工程国家重点实验室（浙江大学）
2007年7月2日