Alignment of hexatic langmuir monolayers under shear

We have studied the structural changes that fatty acid monolayers in the Ov phase undergo when a simple shear flow is imposed. A strong coupling is revealed by the changes in domain structure that are observable using Brewster angle microscopy, suggesting the possibility of shear alignment. The depe...

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Detalles Bibliográficos
Autores: Ignés i Mullol, Jordi, Schwartz, Daniel K.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2000
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/13259
Acceso en línea:https://hdl.handle.net/2445/13259
Access Level:acceso abierto
Palabra clave:Pel·lícules fines
Reologia
Química de superfícies
Thin films
Rheology
Surface chemistry
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spelling Alignment of hexatic langmuir monolayers under shearIgnés i Mullol, JordiSchwartz, Daniel K.Pel·lícules finesReologiaQuímica de superfíciesThin filmsRheologySurface chemistryWe have studied the structural changes that fatty acid monolayers in the Ov phase undergo when a simple shear flow is imposed. A strong coupling is revealed by the changes in domain structure that are observable using Brewster angle microscopy, suggesting the possibility of shear alignment. The dependence of the alignment on the molecular polar tilt proves that the mechanism is different than in nematic liquid crystals. We argue that the degenerate lattice symmetry lines of the underlying pseudohexagonal lattice align in the flow direction, and we explain the observed alignment angle using geometrical arguments.American Physical Society2000info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/13259Articles publicats en revistes (Ciència dels Materials i Química Física)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció digital del document proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevLett.85.1476Physical Review Letters, 2000, vol. 85, núm. 14, p. 1476-1479http://dx.doi.org/10.1103/PhysRevLett.85.1476(c) American Physical Society, 2000info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/132592026-05-27T06:46:51Z
dc.title.none.fl_str_mv Alignment of hexatic langmuir monolayers under shear
title Alignment of hexatic langmuir monolayers under shear
spellingShingle Alignment of hexatic langmuir monolayers under shear
Ignés i Mullol, Jordi
Pel·lícules fines
Reologia
Química de superfícies
Thin films
Rheology
Surface chemistry
title_short Alignment of hexatic langmuir monolayers under shear
title_full Alignment of hexatic langmuir monolayers under shear
title_fullStr Alignment of hexatic langmuir monolayers under shear
title_full_unstemmed Alignment of hexatic langmuir monolayers under shear
title_sort Alignment of hexatic langmuir monolayers under shear
dc.creator.none.fl_str_mv Ignés i Mullol, Jordi
Schwartz, Daniel K.
author Ignés i Mullol, Jordi
author_facet Ignés i Mullol, Jordi
Schwartz, Daniel K.
author_role author
author2 Schwartz, Daniel K.
author2_role author
dc.subject.none.fl_str_mv Pel·lícules fines
Reologia
Química de superfícies
Thin films
Rheology
Surface chemistry
topic Pel·lícules fines
Reologia
Química de superfícies
Thin films
Rheology
Surface chemistry
description We have studied the structural changes that fatty acid monolayers in the Ov phase undergo when a simple shear flow is imposed. A strong coupling is revealed by the changes in domain structure that are observable using Brewster angle microscopy, suggesting the possibility of shear alignment. The dependence of the alignment on the molecular polar tilt proves that the mechanism is different than in nematic liquid crystals. We argue that the degenerate lattice symmetry lines of the underlying pseudohexagonal lattice align in the flow direction, and we explain the observed alignment angle using geometrical arguments.
publishDate 2000
dc.date.none.fl_str_mv 2000
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/13259
url https://hdl.handle.net/2445/13259
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció digital del document proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevLett.85.1476
Physical Review Letters, 2000, vol. 85, núm. 14, p. 1476-1479
http://dx.doi.org/10.1103/PhysRevLett.85.1476
dc.rights.none.fl_str_mv (c) American Physical Society, 2000
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Physical Society, 2000
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 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 Articles publicats en revistes (Ciència dels Materials i Química Física)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.301603

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