Electrical properties of a liquid crystal dispersed in an electrospun cellulose acetate network

Detalhes bibliográficos
Autor(a) principal: MANAILA MAXIMEAN, DOINA
Data de Publicação: 2018
Outros Autores: Danila, Octavian, Almeida, Pedro L., Ganea, Constantin Paul
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.21/8712
Resumo: Electro-optical devices that work in a similar fashion as PDLCs (polymer-dispersed liquid crystals), produced from celulose acetate (CA) electrospun fibers deposited onto indium tin oxide coated glass and a nematic liquid crystal (E7), were studied. CA and the CA/liquid crystal composite were characterized by multiple investigation techniques, such as polarized optical microscopy, dielectric spectroscopy and impedance measurements. Dielectric constant and electric energy loss were studied as a function of frequency and temperature. The activation energy was evaluated and the relaxation time was obtained by fitting the spectra of the dielectric loss with the Havriliak–Negami functions. To determine the electrical characteristics of the studied samples, impedance measurements results were treated using the Cole–Cole diagram and the three-element equivalent model.
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spelling Electrical properties of a liquid crystal dispersed in an electrospun cellulose acetate networkCellulose nanocompositeDielectric spectroscopyImpedance spectroscopyLiquid crystalOptical transmissionElectro-optical devices that work in a similar fashion as PDLCs (polymer-dispersed liquid crystals), produced from celulose acetate (CA) electrospun fibers deposited onto indium tin oxide coated glass and a nematic liquid crystal (E7), were studied. CA and the CA/liquid crystal composite were characterized by multiple investigation techniques, such as polarized optical microscopy, dielectric spectroscopy and impedance measurements. Dielectric constant and electric energy loss were studied as a function of frequency and temperature. The activation energy was evaluated and the relaxation time was obtained by fitting the spectra of the dielectric loss with the Havriliak–Negami functions. To determine the electrical characteristics of the studied samples, impedance measurements results were treated using the Cole–Cole diagram and the three-element equivalent model.Beilstein-InstitutRCIPLMANAILA MAXIMEAN, DOINADanila, OctavianAlmeida, Pedro L.Ganea, Constantin Paul2018-07-25T10:07:26Z2018-01-152018-01-15T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/8712engMAXIMEAN, Doina Manaila; [et al] – Electrical properties of a liquid crystal dispersed in an electrospun cellulose acetate network. Beilstein Journal of Nanotechnology. ISSN 2190-4286. Vol. 9 (2018), pp. 155-1632190-428610.3762/bjnano.9.18info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-08-03T09:56:32Zoai:repositorio.ipl.pt:10400.21/8712Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:17:25.125432Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Electrical properties of a liquid crystal dispersed in an electrospun cellulose acetate network
title Electrical properties of a liquid crystal dispersed in an electrospun cellulose acetate network
spellingShingle Electrical properties of a liquid crystal dispersed in an electrospun cellulose acetate network
MANAILA MAXIMEAN, DOINA
Cellulose nanocomposite
Dielectric spectroscopy
Impedance spectroscopy
Liquid crystal
Optical transmission
title_short Electrical properties of a liquid crystal dispersed in an electrospun cellulose acetate network
title_full Electrical properties of a liquid crystal dispersed in an electrospun cellulose acetate network
title_fullStr Electrical properties of a liquid crystal dispersed in an electrospun cellulose acetate network
title_full_unstemmed Electrical properties of a liquid crystal dispersed in an electrospun cellulose acetate network
title_sort Electrical properties of a liquid crystal dispersed in an electrospun cellulose acetate network
author MANAILA MAXIMEAN, DOINA
author_facet MANAILA MAXIMEAN, DOINA
Danila, Octavian
Almeida, Pedro L.
Ganea, Constantin Paul
author_role author
author2 Danila, Octavian
Almeida, Pedro L.
Ganea, Constantin Paul
author2_role author
author
author
dc.contributor.none.fl_str_mv RCIPL
dc.contributor.author.fl_str_mv MANAILA MAXIMEAN, DOINA
Danila, Octavian
Almeida, Pedro L.
Ganea, Constantin Paul
dc.subject.por.fl_str_mv Cellulose nanocomposite
Dielectric spectroscopy
Impedance spectroscopy
Liquid crystal
Optical transmission
topic Cellulose nanocomposite
Dielectric spectroscopy
Impedance spectroscopy
Liquid crystal
Optical transmission
description Electro-optical devices that work in a similar fashion as PDLCs (polymer-dispersed liquid crystals), produced from celulose acetate (CA) electrospun fibers deposited onto indium tin oxide coated glass and a nematic liquid crystal (E7), were studied. CA and the CA/liquid crystal composite were characterized by multiple investigation techniques, such as polarized optical microscopy, dielectric spectroscopy and impedance measurements. Dielectric constant and electric energy loss were studied as a function of frequency and temperature. The activation energy was evaluated and the relaxation time was obtained by fitting the spectra of the dielectric loss with the Havriliak–Negami functions. To determine the electrical characteristics of the studied samples, impedance measurements results were treated using the Cole–Cole diagram and the three-element equivalent model.
publishDate 2018
dc.date.none.fl_str_mv 2018-07-25T10:07:26Z
2018-01-15
2018-01-15T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.21/8712
url http://hdl.handle.net/10400.21/8712
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv MAXIMEAN, Doina Manaila; [et al] – Electrical properties of a liquid crystal dispersed in an electrospun cellulose acetate network. Beilstein Journal of Nanotechnology. ISSN 2190-4286. Vol. 9 (2018), pp. 155-163
2190-4286
10.3762/bjnano.9.18
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Beilstein-Institut
publisher.none.fl_str_mv Beilstein-Institut
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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