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Title: Liquid-crystal enabled electrophoresis: scenarios for driving and reconfigurable assembling of colloids
Author: Hernández Navarro, Sergi
Tierno, Pietro
Ignés i Mullol, Jordi
Sagués i Mestre, Francesc
Keywords: Cristalls líquids
Liquid crystals
Issue Date: 24-Jul-2015
Publisher: EDP Sciences
Abstract: We demonstrate several examples of driving and steering of colloids when dispersed in nematic liquid crystals. The driving mechanism is based on the principle of nonlinear electrophoresis which is mediated by the asymmetry in the structure of the defects that the inclusions generate in the host elastic matrix. The steering mechanism originates in the photoactivation of the anchoring conditions of the nematic liquid crystal on one of the enclosing plates. As experimental realizations we first review a scenario of water microdroplets being phoretically transported for cargo release and chemical reaction. Steering is illustrated in terms of the reconfigurable assembly of colloidal particles, either in the form of asters or rotating-mills, commanded by predesigned patterns of illumination.
Note: Versió postprint del document publicat a:
It is part of: European Physical Journal-Special Topics, 2015, vol. 224, num. 7, p. 1263-1273
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ISSN: 1951-6355
Appears in Collections:Articles publicats en revistes (Ciència dels Materials i Química Física)

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