Capillary-induced giant elastic dipoles in thin nematic films

Capillary-induced giant elastic dipoles in thin nematic films

Directed and true self-assembly mechanisms in nematic liquid crystal colloids rely on specific interactions between microparticles and the topological defects of the matrix. Most ordered structures formed in thin nematic cells are thus based on elastic multipoles consisting of a particle and nearby...

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Veröffentlicht in:Proceedings of the National Academy of Sciences - PNAS 2015-12, Vol.112 (48), p.14771-14776
Hauptverfasser: Jeridi, Haifa, Gharbi, Mohamed A., Othman, Tahar, Blanc, Christophe
Format: Artikel
Sprache:eng
Schlagworte:
Capillarity
Condensed Matter
Crystals
Fluids
Materials elasticity
Matrix
Physical Sciences
Physics
Soft Condensed Matter
Thin films
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container_issue 48
container_start_page 14771
container_title Proceedings of the National Academy of Sciences - PNAS
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creator Jeridi, Haifa
Gharbi, Mohamed A.
Othman, Tahar
Blanc, Christophe
description Directed and true self-assembly mechanisms in nematic liquid crystal colloids rely on specific interactions between microparticles and the topological defects of the matrix. Most ordered structures formed in thin nematic cells are thus based on elastic multipoles consisting of a particle and nearby defects. Here, we report, for the first time to our knowledge, the existence of giant elastic dipoles arising from particles dispersed in free nematic liquid crystal films. We discuss the role of capillarity and film thickness on the dimensions of the dipoles and explain their main features with a simple 2D model. Coupling of capillarity with nematic elasticity could offer ways to tune finely the spatial organization of complex colloidal systems.
doi_str_mv 10.1073/pnas.1508865112
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source Jstor Complete Legacy; PubMed Central; Alma/SFX Local Collection; Free Full-Text Journals in Chemistry
subjects Capillarity
Condensed Matter
Crystals
Fluids
Materials elasticity
Matrix
Physical Sciences
Physics
Soft Condensed Matter
Thin films
title Capillary-induced giant elastic dipoles in thin nematic films
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