Self-assembly of SiO2 colloidal crystals

被引：0

作者：

Xiao L. ^{[1
,2
]}

Wu W. ^{[2
]}

Lu T. ^{[1
,3
]}

Tang Y. ^{[2
]}

Jiang X. ^{[2
]}

Luo X. ^{[2
]}

Fang Y. ^{[2
]}

Ye X. ^{[2
]}

机构：

[1] Key Laboratory for Radiation Physics and Technology of Ministry of Education, College of Physical Science and Technology, Sichuan University

[2] Research Center of Laser Fusion, CAEP, Mianyang 621900

[3] International Center for Material Physics, Chinese Academy of Sciences

来源：

Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams | 2010年 / 22卷 / 06期

关键词：

Colloidal crystal; Self-assembly; Spin coating; Vertical deposition;

D O I：

10.3788/HPLPB20102206.1275

中图分类号：

学科分类号：

摘要：

SiO2 colloidal crystals were fabricated by vertical deposition and spin coating methods, and their appearance morphology, microstructure and photonic band-gap properties were compared. The used colloidal SiO2 spheres were synthesized by improved Stober method with different diameters and small relative standard deviation. With white light illumination, characteristic six-beam diffraction appears on the SiO2 colloidal crystal fabricated by spin coating, while stripes appear on the surface of the SiO2 colloidal crystal fabricated by vertical deposition. SEM images reveal that, with different dilutions in the same spin coating process conditions, the quality of SiO2 colloidal crystal dispersed in a mixture of glycol and ethanol is best. Transmission measurement shows the colloidal crystal prepared by vertical deposition possesses clear photonic band gap in (111) direction, while the colloidal crystal prepared by spin coating is not the case.

引用

页码：1275 / 1279

页数：4

共 14 条

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