Formation of spatially patterned colloidal photonic crystals through the control of capillary forces and template recognition |
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Authors: | Brozell Adrian M Muha Michelle A Parikh Atul N |
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Institution: | Department of Applied Science, University of California, Davis, 95616, USA. |
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Abstract: | We report the formation of microscopic patterns of substrate-supported, 3D planar colloidal crystals using physical confinement in conjunction with surfaces displaying predetermined binary patterns of hydropholicity. The formation process involves a primary self-assembly wherein nano- and microscale colloids order into a photonic fcc lattice via capillary interactions followed by a secondary template-induced crystal cleavage step. Following this method, arbitrary arrays of pattern elements, which preserve structural and orientational properties of the parent crystal, can be easily obtained. |
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