Xie Qin, Zhou Ji, Kang Lei, Zhao Qian, Li Bo, Wang Yuehui, Zong Ruilong, Huang Xueguang
State Key Lab of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, People's Republic of China.
J Nanosci Nanotechnol. 2010 Mar;10(3):1829-33. doi: 10.1166/jnn.2010.2101.
We demonstrated a simple but general method to prepare large-area flexible nanocomposites with oriented gold nanorods (GNRs) embedded in polyvinyl alcohol (PVA) film by directly introducing a GNR colloidal solution into a PVA aqueous solution and using solid-state drawing techniques. The optical property of the nanocomposite exhibits a strong dependence on the angle between the polarization of the incident light and the drawing direction of the nanocomposite film. The color of the composite film can be intelligently tuned and displays red and blue when the light polarization is switched parallel to and perpendicular to the drawing direction, respectively. These composite films have promise for application in a single electrooptical device.
我们展示了一种简单而通用的方法，通过将金纳米棒（GNRs）胶体溶液直接引入聚乙烯醇（PVA）水溶液中，并使用固态拉伸技术，制备出大面积的、具有取向嵌入PVA薄膜中的金纳米棒的柔性纳米复合材料。该纳米复合材料的光学性质强烈依赖于入射光偏振方向与纳米复合薄膜拉伸方向之间的夹角。当光偏振方向分别平行和垂直于拉伸方向切换时，复合薄膜的颜色可以智能调节，分别显示红色和蓝色。这些复合薄膜有望应用于单一电光器件。
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