Structure and Transmission Spectra for Colloidal Crystals with Silica Spheres

Chin. Phys. Lett.

1998, Vol. 15

Issue (1): 21-23 DOI:

Original Articles

Structure and Transmission Spectra for Colloidal Crystals with Silica Spheres

MEI Dong-bin;DONG Peng¹;LI Hong-qiang;CHENG Bing-ying;ZHANG Dao-zhong

Optical Physics Laboratory, Institute of Physics & Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080 ¹National Heavy Oil Research Laboratory, University of Petroleum, Beijing 102200

Cite this article:

MEI Dong-bin, DONG Peng, LI Hong-qiang et al 1998 Chin. Phys. Lett. 15 21-23

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Abstract An ordered colloidal structure of SiO₂ spheres of 0.33μm diameter has been formed in distilled water. It is a face-centered cubic structure with a lattice constant of 0.54μm and a volume fraction of 0.48, as determined by the Kossel rings analysis. The light transmission in the [111] direction exhibited a dip located at 11600cm^-1. A plane wave expansion method is used to calculate the lowest gap at the L point. The gap center coincides quite well with the measured transmission dip.

Keywords: 42.25.Bs 42.70.-a 61.10.My

Published: 01 January 1998

PACS:	42.25.Bs	(Wave propagation, transmission and absorption)
	42.70.-a	(Optical materials)
	61.10.My

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1998/V15/I1/021

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	MEI Dong-bin
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