Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/127786
Title: | Healing of defects at the interface of nematic liquid crystals and structured Langmuir-Blodgett monolayers |
Author: | Petit Garrido, Núria Trivedi, Rahul P. Ignés i Mullol, Jordi Claret Bonet, Josep Lapointe, Clayton Sagués i Mestre, Francesc Smalyukh, I. |
Keywords: | Cristalls líquids Química de superfícies Cristalls líquids nemàtics Liquid crystals Surface chemistry Nematic liquid crystals |
Issue Date: | 21-Oct-2011 |
Publisher: | American Physical Society |
Abstract: | We use Langmuir-Blodgett molecular monolayers and nematic liquid crystals as model two-and three-dimensional orientationally ordered systems to study the stability and healing of topological defects at their contact interfaces. Integer-strength defects at the monolayer induce disclinations of similar strength in the nematic that, however, do not propagate deep into the bulk, but rather form single- or double-split arch-shaped loops pinned to the interface. This behavior is qualitatively independent of the far-field director orientation and involves either half-integer singular or twist-escaped unity-strength nonsingular nematic disclinations. These two defect configurations can be selected by varying sample preparation given their comparable free energy, consistently with direct probing by use of laser tweezers. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.107.177801 |
It is part of: | Physical Review Letters, 2011, vol. 107, p. 177801-177801 |
URI: | http://hdl.handle.net/2445/127786 |
Related resource: | https://doi.org/10.1103/PhysRevLett.107.177801 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Ciència dels Materials i Química Física) |
Files in This Item:
File | Description | Size | Format | |
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600856.pdf | 1.3 MB | Adobe PDF | View/Open |
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