Structure transitions of polymer-mediated colloidal crystals

The self-assembled colloidal crystals with structure transitions were realized experimentally on substrates with polymer brushes. Such polymer-mediated colloidal crystals were found to experience a series of in-layer structure transitions including stable columnar, polycrystalline, mixed square-hexa...

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Bibliographic Details
Published in:	Physics letters. A Vol. 373; no. 35; pp. 3174 - 3181
Main Authors:	Han, C.R., Cao, J.G., Zhou, L.W., Pang, X.C., Huang, J.L., Zhang, L.F., Huang, J.P.
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 24-08-2009
Subjects:	Band structures Colloidal crystals Self-assembly Structures transitions 47.57.-s Band structures Self-assembly 42.70.Qs 47.57.J Colloidal crystals Structures transitions
Online Access:	Get full text
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Summary:	The self-assembled colloidal crystals with structure transitions were realized experimentally on substrates with polymer brushes. Such polymer-mediated colloidal crystals were found to experience a series of in-layer structure transitions including stable columnar, polycrystalline, mixed square-hexagonal, square, hexagonal structures when the mass ratio of colloidal particles to free polymers was adjusted from 0.125 to 10. Among these structures, a large area interfacial square structure was proved to be a body-centered tetragonal (BCT) structure in three dimensions in the polymer-mediated colloidal crystals.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0375-9601 1873-2429
DOI:	10.1016/j.physleta.2009.06.050