Formation of Spatially-Patterned Colloidal Photonic Crystals Through a Control of Capillary Forces and Template Recognition


Adrian M. Brozell, Michelle A. Muha, and Atul N. Parikh, Langmuir 21 , 11588-11591, 2005

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.