Silica Colloidal Crystals with Ethanol Solvent

作     者：LI Zhao-Lin NI Pei-Gen CHENG Bing-Ying JIN Chong-Jun ZHANG Dao-Zhong DONG Peng GUO Xing-Cai 李兆霖;倪培根;程丙英;金崇君;张道中;董鹏;郭省才

作者机构：Optical Physics LaboratoryInstitute of Physics and Center for Condensed Matter PhysicsChinese Academy of ScienceBeijing 100080 National Heavy Oil Research LaboratoryUniversity of PetroleumBeijing 102200 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2000年第17卷第2期

页      面：112-114页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：Supported by the National Natural Science Foundation of China under Grant No.19774073 

主　　题：spectra crystal colloidal 

摘      要：We have prepared a silica colloidal crystal with ethanol, which has a face-centered cubic structure and a corresponding photonic band gap located in the visible region, determined by Kossel ring analysis and the transmission spectra. A special feature is an apparent variation of its lattice constant, as well as the gap frequency, with sample height. The Raman scattering induced by a picosecond laser at different heights of the colloidal crystal has been measured. It is found that the intensity of the Raman scattering is not related sensitively to the photonic gap, even though the Raman-Stokes wavelength is inside the gap.