Air Force Research Laboratory, Materials and Manufacturing Directorate, 3005 Hobson Way, WPAFB, OH, 45434, USA.
Adv Mater. 2013 Nov 6;25(41):5880-5. doi: 10.1002/adma.201301891. Epub 2013 Jul 21.
Films subsumed with topological defects are transformed into complex, topographical surface features with light irradiation of azobenzene-functionalized liquid crystal polymer networks (azo-LCNs). Using a specially designed optical setup and photoalignment materials, azo-LCN films containing either singular or multiple defects with strengths ranging from |½| to as much as |10| are examined. The local order of an azo-LCN material for a given defect strength dictates a complex, mechanical response observed as topographical surface features.
含有拓扑缺陷的薄膜在偶氮苯功能化液晶聚合物网络（azo-LCN）的光照下转变成复杂的地形表面特征。使用专门设计的光学装置和光取向材料，研究了含有单个或多个缺陷的azo-LCN 薄膜，其缺陷强度范围从|½|到高达|10|。对于给定的缺陷强度，azo-LCN 材料的局部有序决定了观察到的复杂机械响应，表现为地形表面特征。
