Structural study of a bent-core liquid crystal showing the B1-B2 transition

6 pages, 8 figures.-- PACS number(s); 64.70.Md, 61.10.Eq, 61.30.Eb

Bibliographic Details
Authors: Folcia, César L., Etxebarria, Jesús, Ortega, Josu, Ros, M. Blanca
Format: article
Publication Date:2006
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/19767
Online Access:http://hdl.handle.net/10261/19767
Access Level:Open access
Keyword:Liquid crystal phase transformations
X-ray diffraction
Liquid structure
Hysteresis
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spelling Structural study of a bent-core liquid crystal showing the B1-B2 transitionFolcia, César L.Etxebarria, JesúsOrtega, JosuRos, M. BlancaLiquid crystal phase transformationsX-ray diffractionLiquid structureHysteresis6 pages, 8 figures.-- PACS number(s); 64.70.Md, 61.10.Eq, 61.30.EbAn experimental study of the B1-B2 transition is carried out in a bent-core liquid crystal. The study is essentially based on x-ray measurements as a function of temperature. The B1-B2 transition is extremely unusual and implies a deep structural change from a columnar phase to a lamellar phase. We have found that the B1 phase in our compound is similar to the so-called B1 reversed phase, with an additional splay of the polarization in the columns. On approaching the B2 phase the width of the cross section of the columns increases. The transition is clearly first order, with a large hysteresis though the enthalpy content is very small. A possible mechanism for the transition is briefly sketched.This work was supported by the CICYT-FEDER of Spain-EU (Project No. MAT2003-07806-C02), the University of the Basque Country Project No. 9/UPV 00060.310-13562/2001 , and the Aragón Government.Peer reviewedAmerican Physical Society200920092006info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501567236 bytesapplication/pdfhttp://hdl.handle.net/10261/19767reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1103/PhysRevE.74.031702info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/197672026-05-22T06:33:51Z
dc.title.none.fl_str_mv Structural study of a bent-core liquid crystal showing the B1-B2 transition
title Structural study of a bent-core liquid crystal showing the B1-B2 transition
spellingShingle Structural study of a bent-core liquid crystal showing the B1-B2 transition
Folcia, César L.
Liquid crystal phase transformations
X-ray diffraction
Liquid structure
Hysteresis
title_short Structural study of a bent-core liquid crystal showing the B1-B2 transition
title_full Structural study of a bent-core liquid crystal showing the B1-B2 transition
title_fullStr Structural study of a bent-core liquid crystal showing the B1-B2 transition
title_full_unstemmed Structural study of a bent-core liquid crystal showing the B1-B2 transition
title_sort Structural study of a bent-core liquid crystal showing the B1-B2 transition
dc.creator.none.fl_str_mv Folcia, César L.
Etxebarria, Jesús
Ortega, Josu
Ros, M. Blanca
author Folcia, César L.
author_facet Folcia, César L.
Etxebarria, Jesús
Ortega, Josu
Ros, M. Blanca
author_role author
author2 Etxebarria, Jesús
Ortega, Josu
Ros, M. Blanca
author2_role author
author
author
dc.subject.none.fl_str_mv Liquid crystal phase transformations
X-ray diffraction
Liquid structure
Hysteresis
topic Liquid crystal phase transformations
X-ray diffraction
Liquid structure
Hysteresis
description 6 pages, 8 figures.-- PACS number(s); 64.70.Md, 61.10.Eq, 61.30.Eb
publishDate 2006
dc.date.none.fl_str_mv 2006
2009
2009
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/19767
url http://hdl.handle.net/10261/19767
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1103/PhysRevE.74.031702
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 567236 bytes
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
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repository.mail.fl_str_mv
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