Circular flow formation triggered by Marangoni convection in nematic liquid crystal films with a free surface
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Choi, Hyunhee | - |
dc.contributor.author | Takezoe, Hideo | - |
dc.date.available | 2018-05-09T07:14:39Z | - |
dc.date.created | 2018-04-17 | - |
dc.date.issued | 2016-01 | - |
dc.identifier.issn | 1744-683X | - |
dc.identifier.uri | http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/8508 | - |
dc.description.abstract | We demonstrate circular flow formation at a surface in homeotropically oriented nematic liquid crystals with a free surface using focused laser beam irradiation. Under a weak laser power, a pit together with an associated circular bulge is formed: the Marangoni effect. Here a diverging molecular flow from the pit (thermocapillary flow) also induces director tilt in the radial direction. Upon increasing the laser power, the pit becomes deeper, and eventually evolves into a circular flow associated with a deeper pit and a subsidiary circular bulge or valley structure. This phenomenon is induced by escaping from excess deformation energy due to a bend deformation of the director. Actually, we confirmed that the circular flow is never formed in the isotropic phase. The handedness of the vortex cannot be controlled by circular polarisation, but is controllable by doping with chiral molecules. This rotational motion (a nematic microrotor) is a unique phenomenon only exhibited by anisotropic liquids, and is expected to be applied for novel devices. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.relation.isPartOf | SOFT MATTER | - |
dc.subject | BEAM ABSORPTION | - |
dc.subject | POLYMERS | - |
dc.title | Circular flow formation triggered by Marangoni convection in nematic liquid crystal films with a free surface | - |
dc.type | Article | - |
dc.identifier.doi | 10.1039/c5sm02098k | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | SOFT MATTER, v.12, no.2, pp.481 - 485 | - |
dc.description.journalClass | 1 | - |
dc.identifier.wosid | 000367259700018 | - |
dc.identifier.scopusid | 2-s2.0-84952305497 | - |
dc.citation.endPage | 485 | - |
dc.citation.number | 2 | - |
dc.citation.startPage | 481 | - |
dc.citation.title | SOFT MATTER | - |
dc.citation.volume | 12 | - |
dc.contributor.affiliatedAuthor | Choi, Hyunhee | - |
dc.type.docType | Article | - |
dc.description.isOpenAccess | N | - |
dc.subject.keywordPlus | BEAM ABSORPTION | - |
dc.subject.keywordPlus | POLYMERS | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
Soongsil University Library 369 Sangdo-Ro, Dongjak-Gu, Seoul, Korea (06978)02-820-0733
COPYRIGHT ⓒ SOONGSIL UNIVERSITY, ALL RIGHTS RESERVED.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.