溶胶凝胶法制备圆柱形大孔二氧化硅反蛋白石结构晶体  

Cylindrical macroporous silica inverse opal structures coassembled by sol-gel assembly method

作　　者：李侠[1] 郭文华[1,2] 吕志娟[1] 邢进华[1] 王鸣[2] 

机构地区：[1]常熟理工学院物理与电子工程学院,江苏省新型功能材料重点实验室,常熟215500 [2]南京师范大学物理科学与技术学院,江苏省光电技术重点实验室,南京210097

出　　处：《物理学报》2014年第2期187-193,共7页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:61178044;91123015);江苏省高校自然科学基金(批准号:12KJB140001);江苏省新型功能材料重点实验室开放基金(批准号:12KFJJ003);常熟理工学院青年教师科研启动项目(批准号:QZ1113)资助的课题~~

摘　　要：利用溶胶凝胶法在不同直径的毛细管表面制备了圆柱形二氧化硅反蛋白石多孔结构.利用扫描电子显微镜表征了其形貌,发现胶体晶体的类(111)面结构整体为圆柱形,平行于毛细管表面.透射光谱结果表明,二氧化硅多孔结构在[111]方向具有典型的光子带隙效应,与布拉格理论相符合,有望应用到光通讯和传感领域.Cylindrical macroporous silica structures are fabricated on the surfaces of glass capillary with different diameters by a sol-gel cooperative assembly method. The cylindrical inverse opals are characterized by scanning electron microscope, showing that the （111）-like plane of face-centered-cubic （fcc） structure is parallel to the surface of the cylindrical capillary. Transmission spectra demonstrate typical photonic band gaps （PBGs） of about 40% in the direction of [111] lattice orientation, which accords well with the result from the Bragg formula. The excellent optical properties not only affirm the success of sol-gel coassembled macroporous silica inverse opals on cylindrical substrates, but also introduce PBG materials to meet the requirements of the practical applications of optical communication, optical switching and sensors.

关 键 词：溶胶凝胶法 毛细管 多孔薄膜 光子带隙 

分 类 号：O629.73[理学—有机化学]