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Title: Inward-growing self-assembly of colloidal crystal films on horizontal substrates
Authors: Yan, Q. 
Zhou, Z. 
Zhao, X.S. 
Issue Date: 29-Mar-2005
Citation: Yan, Q., Zhou, Z., Zhao, X.S. (2005-03-29). Inward-growing self-assembly of colloidal crystal films on horizontal substrates. Langmuir 21 (7) : 3158-3164. ScholarBank@NUS Repository.
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. © 2005 American Chemical Society.
Source Title: Langmuir
ISSN: 07437463
DOI: 10.1021/la047337p
Appears in Collections:Staff Publications

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