Nanoscopic actuators in light-induced deformation of glassy azo-polymers
Nanoscopic actuators in light-induced deformation of glassy azo-polymers
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玻璃态偶氮聚合物光致变形中的纳米致动器
DOI：
10.1117/12.2031775
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Ilnytskyi
中科院分区：
文献类型：
--
作者：
Saphiannikova;Toshchevikov;Ilnytskyi
我们给出了玻璃偶氮低聚物中光力学的理论和计算机模拟研究。在不同温度下获得的生色团相对于主干的角度分布被作为约束应力的理论表达式的输入，该理论表达式被发现对所研究的结构是正的。典型螺旋桨结构的光诱导重取向是样品伸长的微观原因。偶氮螺旋桨的工作原理是纳米级的致动器，可以将光能转化为材料变形。这一发现为直接从化学结构预测玻璃状偶氮化合物的光机械性质开辟了一条途径。
We present the theoretical and computer simulation studies of photo-mechanics in glassy azo-oligomers. Angular distributions of chromophores in respect to the backbones obtained at different temperatures served as input into a theoretical expression for the striction stress, which was found to be positive for the structure under investigation. The light-induced reorientation of typical propeller-like structures is shown to be a microscopic reason of the sample elongation. The azo-propellers work as nanoscopic actuators which convert the light energy into material deformation. This finding opens a way for prediction of photomechanical properties of glassy azo-compounds directly from their chemical structure.