Abstract The macropore silica colloidal crystal templates were assembled orderly in a capillary glass tube by an applied electric field method to control silica deposition. In order to achieve the photonic band gap (PBG) of colloidal crystal in optical communication waveband, the diameter of silica microspheres is selected by Bragg diffraction formula. An experiment was designed to test the bandgap of the silica crystal templates. This paper discusses the formation process and the close-packed fashion of the silica colloidal crystal templates was discussed. The surface morphology of the templates was also analyzed. The results showed that the close-packed fashion of silica array templates was face-centered cubic (FCC) structure. The agreement is very good between the experimental data and the theoretical calculation.
Received: 21 September 2008
Revised: 22 October 2008
Accepted manuscript online:
PACS:
42.79.Sz
(Optical communication systems, multiplexers, and demultiplexers?)
Fund: Project supported
by Science and Technology Foundation of Jiangsu Province (Grant No
BE2008138).
Cite this article:
Yan Hai-Tao(闫海涛), Wang Ming(王鸣), Ge Yi-Xian(葛益娴), and Yu Ping(喻平) Applied electric field to fabricate colloidal crystals with the photonic band-gap in communication waveband 2009 Chin. Phys. B 18 2389
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