STRUCTURE AND TRANSMISSION SPECTRA FOR COLLOIDAL CRYSTALS WITH SILICASPHERES

Authors
MEI DB DONG P LI HQ CHENG BY ZHANG DZ
Citation
Db. Mei et al., STRUCTURE AND TRANSMISSION SPECTRA FOR COLLOIDAL CRYSTALS WITH SILICASPHERES, Chinese Physics Letters, 15(1), 1998, pp. 21-23
Citations number
18
Categorie Soggetti
Physics
Journal title
Chinese Physics Letters → ACNP
ISSN journal
0256307X
Volume
15
Issue
1
Year of publication
1998
Pages
21 - 23
Database
ISI
SICI code
0256-307X(1998)15:1<21:SATSFC>2.0.ZU;2-6
Abstract
An ordered colloidal structure of SiO2 spheres of 0.33 mu m diameter h as been formed in distilled water. It is a face-centered cubic structu re with a lattice constant of 0.54 mu m and a volume fi action of 0.48 , as determined by the Kossel rings analysis. The light transmission i n the [111] direction exhibited a dip located at 11600 cm(-1). A plane wave expansion method is used to calculate the lowest gap at the L po int. The gap center coincides quite well with the measured transmissio n dip.