Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 298, Issue 2, Pages 713-719Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2006.01.031
Keywords
self-assembly; colloid crystal; ink-jet printing
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An array of the colloidal photonic crystals was directly fabricated using an ink-Jet printing. The colloidal ink droplets containing the monodispersed polystyrene latex particles were selectively deposited on a hydrophobic surface. Solvent evaporation from each ink droplet leads to a formation of microdome-shaped colloidal assembles of close-packed structures. Microspectroscopic analysis has confirmed that the individual assembly serves as a photonic crystal and its optical properties can be correlated with the microstructural features. Unlike other techniques of patterned growth of colloidal photonic crystal, the substrate does not need to be patterned first and no template is needed in the direct writing by the ink-jet printing. Using our strategy, we have rapidly produced the colloidal photonic crystal microarrays composed of different-sized spheres addressably patterned on the same substrate. (c) 2006 Elsevier Inc. All rights reserved.
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