| Fabrication of Crack-free Photonic Crystal Films on Superhydrophobic Nanopin Surface | |
| Tian Xia ; Xia T(夏添) ; Wenhao Luo ; Fan Hu ; Wu Qiu ; Zhisen Zhang ; Youhui Lin ; Lin YH(林友辉) ; Xiang Yang Liu ; Liu XY(刘向阳) | |
| 2017-06 | |
| 关键词 | Superhydrophobic Surface Photonic Crystal Nanostructure Crack-free soft assembly |
| 英文摘要 | 厦门大学生物仿生及软物质研究院林友辉副教授以及院长刘向阳教授在利用超疏水基底改善胶体小球自组装研究方向取得进展。 目前通过胶体小球自组装方法已构筑了许多复杂却高度有序的光子晶体。但是胶体小球在形成有序结构过程中会不可避免的产生收缩和应力，该方法通常会导致裂纹和缺陷的形成，降低了光子晶体的光学质量，也同时限制了其进一步的应用。 在该研究中，作者基于以上的研究现状，以纳米针状的超疏水表面为基底，来改善胶体小球的自组装，可以减少甚至消除大尺度的裂纹的效果。基于该原理，最后成功制备出厘米级别无裂纹的光子晶体薄膜。; 【Abstract】sed on their superior optical performance, photonic crystals (PCs) have been investigated as excellent candidates for widespread applications including sensors, displays, separation processes, and catalysis. However, fabrication of large-area PC assemblies with no defects and structurally controllable is still a tough task. Herein, we develop an effective strategy for preparing centimeter-scale crack-free photonic crystals films by the combined effects of soft assembly and superhydrophobic nanopin surfaces. Owing to its large contact angle and low adhesive force on the superhydrophobic substrate, the colloidal suspension exhibits a continuous retraction of the three-phase (gas−liquid−solid) contact line(TCL) in the process of solvent (water molecules) evaporation. The constantly receding TCL can bring the colloidal spheres closer to each other, which could timely close the gaps due to the loss of water molecules. As a result, close-packed and well-ordered assembly structures can be easily obtained. We expect that this work may pave the way to utilize novel superhy drophobic materials for designing and developing high-quality PCs and to apply PCs in different fields.; This work is financially supported by National Nature Science Foundation (Nos. 21401154,U1405226), 111 project (B16029), Guangdong Natural Science Foundation (2014A030310005),the Fundamental Research Funds for the Central Universities of China (Nos. 20720170011,20720140528), Ph.D. Programs Foundation of Ministry of Education of China(20130121110018), Fujian Provincial Department of Science & Technology (2014H6022).X.Y.L.'s primary affiliation is the Department of Physics, National University of Singapore. |
| 语种 | 中文 |
| 出版者 | the American Chemical Society |
| 内容类型 | 其他 |
| 源URL | [http://dspace.xmu.edu.cn/handle/2288/135437]  |
| 专题 | 物理技术－已发表论文 |
| 推荐引用方式 GB/T 7714 | Tian Xia,Xia T,Wenhao Luo,et al. Fabrication of Crack-free Photonic Crystal Films on Superhydrophobic Nanopin Surface. 2017-06-01. |
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