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Nanomaterials 2019, 9(4), 575; https://doi.org/10.3390/nano9040575

Convenient and Efficient Fabrication of Colloidal Crystals Based on Solidification-Induced Colloidal Assembly

Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China
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Received: 25 February 2019 / Revised: 25 March 2019 / Accepted: 26 March 2019 / Published: 9 April 2019
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Abstract

The simple yet efficient and versatile fabrication of colloidal crystals was investigated based on the solidification-induced colloidal crystallization process with particle/water suspension as precursor. The resulting colloidal crystals were constituted by crystal grains with sizes ranging from several tens of micrometers to a few millimeters. Each of the grains had a close-hexagonal array of colloids, which endowed the bulk colloidal crystal powders with some specific optical properties. The freezing of water was shown as the major driving force to form colloidal crystal grains, which supersaturated the solution with nanoparticles and thus induced the formation and growth of colloidal crystal seeds. This process is intrinsically different from those conventional methods based on shearing force, surface tension, columbic interaction or magnetic interaction, revealing a new strategy to fabricate colloidal crystals in a convenient and efficient way. View Full-Text
Keywords: colloidal crystal; nanoparticles; solidification-induced; colloidal crystallization colloidal crystal; nanoparticles; solidification-induced; colloidal crystallization
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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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Shao, T.; Sun, L.; Yang, C.; Ye, X.; Chen, S.; Luo, X. Convenient and Efficient Fabrication of Colloidal Crystals Based on Solidification-Induced Colloidal Assembly. Nanomaterials 2019, 9, 575.

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