Disclination-mediated thermo-optical response in nematic glass sheets
Disclination-mediated thermo-optical response in nematic glass sheets
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DOI：
10.1103/physreve.81.060701
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发表时间：
2010-06-08
影响因子：
2.4
通讯作者：
Warner, Mark
中科院分区：
文献类型：
--
作者：
Modes, Carl D.;Bhattacharya, Kaushik;Warner, Mark
向列相固体强烈地响应于环境热或光的变化，在平行于和垂直于指向矢的方向上显著不同。这种现象的特点是均匀的导演场，但不是缺陷纹理。我们分析了弹性基态的一个玻璃在膜近似作为温度的函数的一些向错缺陷的眼睛可逆诱导三维形状从平板材料，在纳米级的宏观物体，包括nondevelopable表面。后者提供了一个范例，通过在薄系统中的可切换拉伸致动。
Nematic solids respond strongly to changes in ambient heat or light, significantly differently parallel and perpendicular to the director. This phenomenon is well characterized for uniform director fields but not for defect textures. We analyze the elastic ground states of a nematic glass in the membrane approximation as a function of temperature for some disclination defects with an eye toward reversibly inducing three-dimensional shapes from flat sheets of material, at the nanoscale all the way to macroscopic objects, including nondevelopable surfaces. The latter offers a paradigm to actuation via switchable stretch in thin systems.