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《Journal of Chongqing Normal University(Natural Science)》 2008-04
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The Progress in Fabrication of Self-assembled Colloidal Photonic Crystal Via Vertical Deposition Technique

YU Ping1,2,OU Hong-ye2(1.Optoelectronic Technology Key Laboratory of Jiangsu Province,Nanjing Normal University,Nanjing 210097;2.Dept.of Journal of Chongqing Normal University,Chongqing 400047,China)  
Photonic crystal is a type of synthetic material with photonic band gaps.When electromagnetic wave propagates in certain directions with specified frequencies,the nonhomogeneous dielectric constants distribution will operate and prevent it from propagating,namely the photonic band gaps appears.Ever since Yablonovitch and John proposed the concept of photonic crystal,extensive interests has existed in fabricating colloidal crytals for photonic application via self-assembly method in the use of gravity,centrifugal force,lateral capillary forces or externally applied electric potentials.Among these self-assembled methods,the vertical deposition technique proposed by Nagayam and later developed by Jiang et al is getting more and more attentions for its facile,cost-effective,short fabrication period,and crystal layer controllable characteristics.In this paper,we summarize the latest progress of vertical deposition technique on self-assembled mechanism,several typical modified fabrication methods are presented with comparison.Defect control and possible applications are also mentioned,and the outlook which may be achieved is introduced.
【Fund】: 江苏省高新技术基金资助项目(No.BG2006024)
【CateGory Index】: O613.72
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