Reorientation of single-wall carbon nanotubes in negative anisotropy liquid crystals by an electric field

Single-wall carbon nanotubes (SWCNT) are anisotropic nanoparticles that can cause modifications in the electrical and electro-optical properties of liquid crystals. The control of the SWCNT concentration, distribution and reorientation in such self-organized fluids allows for the possibility of tuni...

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Autores: García García, Amanda, Vergaz Benito, Ricardo, Algorri Genaro, José Francisco|||0000-0002-2654-583X, Zito, Gianluigi, Cacace, Teresa, Marino, Antigone, Otón Sánchez, José Manuel, Geday, Morten Andreas
Tipo de recurso: artículo
Fecha de publicación:2016
País:España
Institución:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/28997
Acceso en línea:https://hdl.handle.net/10902/28997
Access Level:acceso abierto
Palabra clave:Carbon nanotubes
Impedance
Liquid crystal
Negative anisotropy
Raman spectroscopy
Reorientation
Single-wall CNTs
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spelling Reorientation of single-wall carbon nanotubes in negative anisotropy liquid crystals by an electric fieldGarcía García, AmandaVergaz Benito, RicardoAlgorri Genaro, José Francisco|||0000-0002-2654-583XZito, GianluigiCacace, TeresaMarino, AntigoneOtón Sánchez, José ManuelGeday, Morten AndreasCarbon nanotubesImpedanceLiquid crystalNegative anisotropyRaman spectroscopyReorientationSingle-wall CNTsSingle-wall carbon nanotubes (SWCNT) are anisotropic nanoparticles that can cause modifications in the electrical and electro-optical properties of liquid crystals. The control of the SWCNT concentration, distribution and reorientation in such self-organized fluids allows for the possibility of tuning the liquid crystal properties. The alignment and reorientation of CNTs are studied in a system where the liquid crystal orientation effect has been isolated. Complementary studies including Raman spectroscopy, microscopic inspection and impedance studies were carried out. The results reveal an ordered reorientation of the CNTs induced by an electric field, which does not alter the orientation of the liquid crystal molecules. Moreover, impedance spectroscopy suggests a nonnegligible anchoring force between the CNTs and the liquid crystal molecules.This work has been supported by the European COST Action IC1208, financed by the Ministerio de Economía y Competitividad of Spain (grants TEC2013-47342-C2-2-R and TEC2013-50138-EXP) and by the R&D Program SINFOTON S2013/MIT-2790 financed by the Comunidad de Madrid and the European Structural funds (FEDER). AAG is grateful to the European Union's FP7 Programme under Grant Agreement No. HEALTH-F3-2012-304814 - Project "RAPTADIAG". The authors especially wish to thank Christophe Blanc from the Université Montpellier 2 (France) for his advice and technical assistance.Beilstein-Institut Zur Forderung der Chemischen Wissenschaften20162016-06-08journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articlehttps://hdl.handle.net/10902/28997Beilstein Journal of Nanotechnology, 2016, 7, 825-833reponame:UCrea Repositorio Abierto de la Universidad de Cantabriainstname:Universidad de Cantabria (UC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución 3.0 Españahttp://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccessoai:repositorio.unican.es:10902/289972026-06-02T12:39:31Z
dc.title.none.fl_str_mv Reorientation of single-wall carbon nanotubes in negative anisotropy liquid crystals by an electric field
title Reorientation of single-wall carbon nanotubes in negative anisotropy liquid crystals by an electric field
spellingShingle Reorientation of single-wall carbon nanotubes in negative anisotropy liquid crystals by an electric field
García García, Amanda
Carbon nanotubes
Impedance
Liquid crystal
Negative anisotropy
Raman spectroscopy
Reorientation
Single-wall CNTs
title_short Reorientation of single-wall carbon nanotubes in negative anisotropy liquid crystals by an electric field
title_full Reorientation of single-wall carbon nanotubes in negative anisotropy liquid crystals by an electric field
title_fullStr Reorientation of single-wall carbon nanotubes in negative anisotropy liquid crystals by an electric field
title_full_unstemmed Reorientation of single-wall carbon nanotubes in negative anisotropy liquid crystals by an electric field
title_sort Reorientation of single-wall carbon nanotubes in negative anisotropy liquid crystals by an electric field
dc.creator.none.fl_str_mv García García, Amanda
Vergaz Benito, Ricardo
Algorri Genaro, José Francisco|||0000-0002-2654-583X
Zito, Gianluigi
Cacace, Teresa
Marino, Antigone
Otón Sánchez, José Manuel
Geday, Morten Andreas
author García García, Amanda
author_facet García García, Amanda
Vergaz Benito, Ricardo
Algorri Genaro, José Francisco|||0000-0002-2654-583X
Zito, Gianluigi
Cacace, Teresa
Marino, Antigone
Otón Sánchez, José Manuel
Geday, Morten Andreas
author_role author
author2 Vergaz Benito, Ricardo
Algorri Genaro, José Francisco|||0000-0002-2654-583X
Zito, Gianluigi
Cacace, Teresa
Marino, Antigone
Otón Sánchez, José Manuel
Geday, Morten Andreas
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Carbon nanotubes
Impedance
Liquid crystal
Negative anisotropy
Raman spectroscopy
Reorientation
Single-wall CNTs
topic Carbon nanotubes
Impedance
Liquid crystal
Negative anisotropy
Raman spectroscopy
Reorientation
Single-wall CNTs
description Single-wall carbon nanotubes (SWCNT) are anisotropic nanoparticles that can cause modifications in the electrical and electro-optical properties of liquid crystals. The control of the SWCNT concentration, distribution and reorientation in such self-organized fluids allows for the possibility of tuning the liquid crystal properties. The alignment and reorientation of CNTs are studied in a system where the liquid crystal orientation effect has been isolated. Complementary studies including Raman spectroscopy, microscopic inspection and impedance studies were carried out. The results reveal an ordered reorientation of the CNTs induced by an electric field, which does not alter the orientation of the liquid crystal molecules. Moreover, impedance spectroscopy suggests a nonnegligible anchoring force between the CNTs and the liquid crystal molecules.
publishDate 2016
dc.date.none.fl_str_mv 2016
2016-06-08
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10902/28997
url https://hdl.handle.net/10902/28997
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución 3.0 España
http://creativecommons.org/licenses/by/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución 3.0 España
http://creativecommons.org/licenses/by/3.0/es/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Beilstein-Institut Zur Forderung der Chemischen Wissenschaften
publisher.none.fl_str_mv Beilstein-Institut Zur Forderung der Chemischen Wissenschaften
dc.source.none.fl_str_mv Beilstein Journal of Nanotechnology, 2016, 7, 825-833
reponame:UCrea Repositorio Abierto de la Universidad de Cantabria
instname:Universidad de Cantabria (UC)
instname_str Universidad de Cantabria (UC)
reponame_str UCrea Repositorio Abierto de la Universidad de Cantabria
collection UCrea Repositorio Abierto de la Universidad de Cantabria
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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