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Crystals 2016, 6(10), 122;

Self-Assembly Kinetics of Colloidal Particles inside Monodispersed Micro-Droplet and Fabrication of Anisotropic Photonic Crystal Micro-Particles

The State Key Lab of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
Department of Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, TX 78705, USA
Author to whom correspondence should be addressed.
Academic Editor: Helmut Cölfen
Received: 13 July 2016 / Revised: 15 August 2016 / Accepted: 18 September 2016 / Published: 23 September 2016
(This article belongs to the Special Issue Colloidal Crystals)
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A new microfluidic approach to preparing anisotropic colloidal photonic crystal microparticles is developed and the self-assembly kinetics of colloidal nanoparticles is discussed. Based on the “coffee ring” effect in the self-assembly process of colloidal silica particle in strong solvent extraction environment, we successfully prepared anisotropic photonic crystal microparticles with different shapes and improved optical properties. The shapes and optical properties of photonic crystal microparticles can be controlled by adjusting the droplet size and extraction rate. We studied the self-assembly mechanism of colloidal silica particles in strong solvent extraction environment, which has potential applications in a variety of fields including optical communication technology, environmental response, photo-catalysis and chromic material. View Full-Text
Keywords: photonic crystal microparticles; solvent extraction; “coffee ring” effect photonic crystal microparticles; solvent extraction; “coffee ring” effect

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zhang, M.-Y.; Xu, K.; Xu, J.-H.; Luo, G.-S. Self-Assembly Kinetics of Colloidal Particles inside Monodispersed Micro-Droplet and Fabrication of Anisotropic Photonic Crystal Micro-Particles. Crystals 2016, 6, 122.

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