Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.colsurfa.2012.03.015
Title: Solvent effect on the self-assembly of colloidal microspheres via a horizontal deposition method
Authors: Cai, Z.
Teng, J.
Yan, Q.
Zhao, X.S. 
Keywords: Colloidal crystals
Horizontal deposition method
Self-assembly
Solvent effect
Issue Date: 20-May-2012
Source: Cai, Z.,Teng, J.,Yan, Q.,Zhao, X.S. (2012-05-20). Solvent effect on the self-assembly of colloidal microspheres via a horizontal deposition method. Colloids and Surfaces A: Physicochemical and Engineering Aspects 402 : 37-44. ScholarBank@NUS Repository. https://doi.org/10.1016/j.colsurfa.2012.03.015
Abstract: The solvent effect on the self-assembly of polystyrene (PS) colloidal spheres for the fabrication of colloidal crystals (CCs) using the horizontal deposition method was investigated. Solvents containing water and ethanol of different volume fractions were examined. Samples were characterized using scanning electron microscopy and UV-vis-near-infrared spectroscopy techniques. It was found that the surface morphology and local structure of the CCs were significantly affected by the solvent. It was also observed that by adding minute quantity of a tetraethyl orthosilicate sol into the colloidal suspension, well ordered three-dimensional PS CCs without cracks were obtained. Experimental conditions were optimized and high-quality CCs in larger domains were fabricated with PS spheres as big as 2 μm in diameter. The success in fabricating CCs using colloidal spheres larger than 1.5 μm in diameter represents a significant work, especially when applications in photonics and tissue engineering are concerned. © 2012 Elsevier B.V.
Source Title: Colloids and Surfaces A: Physicochemical and Engineering Aspects
URI: http://scholarbank.nus.edu.sg/handle/10635/64609
ISSN: 09277757
DOI: 10.1016/j.colsurfa.2012.03.015
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