Department of Physics, Engineering Physics & Astronomy

Department of Physics, Engineering Physics & Astronomy
Department of Physics, Engineering Physics & Astronomy

Nano- and Micro-World of Block Copolymers- From Self-Assembly to Nanomechanical Devices

Guojun Liu
Canada Research Chair, Queen's Department of Chemistry

Wednesday, February 1, 2006
10:30 AM @ Stirling 501

Abstract:

Block copolymers are made by chemically joining different polymers in a head-to-tail fashion. Despite the covalent linkage of the different polymer blocks, they remain incompatible and segregate from one another under most conditions to yield patterned mesophasic block-segregated structures. We have developed methods to chemically process these block-segregated copolymers to yield "permanent" and "sculptured" nano-objects of various architectural complexities. These nano-objects produced possess interesting properties and can be further assembled to yield crude nanomechanical devices. Reviewed in my talk are the preparation, property, and application of nano- and micro-structures derived from block copolymers.