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Article overview
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Elastic interactions between colloidal microspheres and elongated convex and concave nanoprisms in nematic liquid crystals | | Bohdan Senyuk
; Ivan I. Smalyukh
; | | Date: |
24 Dec 2016 | | Abstract: | We study mutual alignment and interactions between colloidal particles of
dissimilar shapes and dimensions when dispersed in a nematic host fluid. Convex
pentagonal and concave starfruit-shaped nanoprisms and microspheres induce
dipolar or quadrupolar director structures. The ensuing elastic pair
interactions between microspheres and nanoprisms are highly dependent on the
nanoparticle shape being omnidirectionally attractive for convex prisms but
strongly anisotropic for concave prisms. Elastic deformations due to spherical
particles cause well-defined alignment of complex-shaped nanoparticles at
distances much larger than the microsphere size. We characterize distance and
angular dependencies of elastic pair interaction forces, torques, and binding
energies. The studied elasticity-mediated self-assembly of metal and dielectric
nanoparticles with dissimilar shapes and sizes opens new possibilities for
self-assembly based fabrication of structured mesoscopic composites with
predesigned properties. | | Source: | arXiv, 1612.8131 | | Services: | Forum | Review | PDF | Favorites | |
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