Visualization of Stacking Faults and their Formation in Colloidal Photonic Crystal Films
Visualization of Stacking Faults and their Formation in Colloidal Photonic Crystal Films
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DOI：
10.1002/adma.200702431
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发表时间：
2008-03
影响因子：
29.4
通讯作者：
E. Vekris;V. Kitaev;Doug D. Perovic;J. S. Aitchison;G. Ozin
中科院分区：
文献类型：
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作者：
E. Vekris;V. Kitaev;Doug D. Perovic;J. S. Aitchison;G. Ozin
由于出现了各种新的有趣的光学现象，光子晶体在过去的二十年中一直是许多科学工作的焦点。[1, 2] 一种有前途且廉价的光子晶体制造途径是基于胶体晶体（通常称为“人造蛋白石”）薄膜的自组装，该薄膜最近在传感、[3] 显示、[4] 和光催化的原型设备中得到了许多应用。人造蛋白石薄膜又可以用作周期性模板，渗透折射率足够高（即 n！2.8）的材料，以创建“反蛋白石”。[6, 7] 后一种材料表现出三维光子带隙（PBG），在该频率范围内材料内的光学状态密度接近于零，并且在低阈值激光和光通信中具有潜在应用。
Photonic crystals have been the focus of much scientific effort over the last two decades owing to a variety of new and interesting optical phenomena.[1, 2] One promising and inexpensive route to the fabrication of photonic crystals is based on the self-assembly of colloidal crystal (commonly referred to as ‘‘artificial opal’’) films, which are recently finding many applications in prototype devices for sensing,[3] display,[4] and photocatalysis.[5] An artificial opal film can in turn be used as a periodic template for the infiltration of a material of sufficiently high refractive index (ie n! 2.8) to create an ‘‘inverse opal’’.[6, 7] This latter material exhibits a three-dimensional photonic band gap (PBG), a frequency range over which the density of optical states within the material approaches zero, and has potential applications in low-threshold lasing and optical telecommunications.