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Title: Reconfigurable swarms of colloidal particles electrophoretically driven in nematic liquid crystals
Author: Hernàndez-Navarro, Sergi
Tierno, Pietro
Ignés i Mullol, Jordi
Sagués i Mestre, Francesc
Keywords: Electroforesi
Issue Date: 6-Jul-2015
Publisher: Taylor and Francis
Abstract: We present experiments where anisometric colloidal microparticles dispersed in a nematic liquid crystal cell with homeotropic anchoring conditions are dynamically assembled by means of liquid-crystal-enabled electrophoresis (LCEEP) using an AC electric field perpendicular to the confining plates. A nematic host with negative dielectric anisotropy leads to a driving force parallel to the cell plates. We take advantage of the resulting gliding anchoring conditions and the degeneracy in the direction of particle motion to design reconfigurable trajectories using a photosensitive anchoring layer (azosilane self-assembled monolayer), as the particle trajectory follows the local director orientation.
Note: Versió postprint del document publicat a:
It is part of: Molecular Crystals and Liquid Crystals, 2015, vol. 610, p. 163-172
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ISSN: 1542-1406
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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