Inward-growing self-assembly of colloidal crystal films on horizontal substrates

Yan, Qingfeng, Zhou, Zuocheng and Zhao, X. S. (2005) Inward-growing self-assembly of colloidal crystal films on horizontal substrates. Langmuir, 21 7: 3158-3164. doi:10.1021/la047337p

Author Yan, Qingfeng
Zhou, Zuocheng
Zhao, X. S.
Title Inward-growing self-assembly of colloidal crystal films on horizontal substrates
Journal name Langmuir   Check publisher's open access policy
ISSN 0743-7463
Publication date 2005-03
Sub-type Article (original research)
DOI 10.1021/la047337p
Volume 21
Issue 7
Start page 3158
End page 3164
Total pages 7
Place of publication Washington DC, United States
Publisher American Chemical Society
Language eng
Abstract Colloidal crystal films have been fabricated on solid substrates with a horizontal deposition method. Scanning electron microscope images showed that the colloidal crystal films exhibit ordered face-centered cubic structures in large domains. Optical measurements demonstrated the presence of photonic band gap along the crystallographic [111] direction. The fabrication method described in this paper allows one to rapidly fabricate colloidal crystal films of different thicknesses, which can be controlled by varying colloidal suspension concentration or volume. In addition, the method also works well for growing colloidal crystal films on a hydrophilic solid substrate with a rough surface. Furthermore, the fabrication of colloidal crystal heterostructures has been demonstrated. An inward-growing mechanism responsible for self-assembly of colloidal spheres on horizontal substrates has been proposed to interpret the observed experimental results.
Keyword Photonic Bandgap Crystals
Large Areas
Vertical Deposition
Mesoscale Particles
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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