Cellulose micro/nano fibers conformational effects probed by nematic liquid crystal droplets

Detalhes bibliográficos
Autor(a) principal: Oliveira, Alexandre Ernesto Grüninger de
Data de Publicação: 2014
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/13929
Resumo: Probing micro-/nano-sized surface conformations, which are ubiquitous in biological systems, by using liquid crystal droplets, which change their ordering and optical appearance in response to the presence of more than ten times smaller cellulose based micro/nano fibers, might find new uses in a range of biological environments and sensors. Previous studies indicate that electrospun micro/nano cellulosic fibers produced from liquid crystalline solutions could present a twisted form [1]. In this work, we study the structures of nematic liquid crystal droplets threaded by cellulose fibers prepared from liquid crystalline and isotropic solutions as well as droplets pierced by spider-made fibers [2]. Planar anchoring at the fibers and planar and homeotropic at the drop surfaces allowed probing cellulose fibers different helical structures as well as aligned filaments.
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spelling Cellulose micro/nano fibers conformational effects probed by nematic liquid crystal dropletsDropletsCelluloseMicro/nano fibersAnchoringConformationProbing micro-/nano-sized surface conformations, which are ubiquitous in biological systems, by using liquid crystal droplets, which change their ordering and optical appearance in response to the presence of more than ten times smaller cellulose based micro/nano fibers, might find new uses in a range of biological environments and sensors. Previous studies indicate that electrospun micro/nano cellulosic fibers produced from liquid crystalline solutions could present a twisted form [1]. In this work, we study the structures of nematic liquid crystal droplets threaded by cellulose fibers prepared from liquid crystalline and isotropic solutions as well as droplets pierced by spider-made fibers [2]. Planar anchoring at the fibers and planar and homeotropic at the drop surfaces allowed probing cellulose fibers different helical structures as well as aligned filaments.Godinho, Maria HelenaAguirre, LuisRUNOliveira, Alexandre Ernesto Grüninger de2017-12-17T01:30:17Z2014-092014-122014-09-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10362/13929enginfo: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:RCAAP2024-03-11T03:48:50Zoai:run.unl.pt:10362/13929Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:21:30.593982Repositório 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 Cellulose micro/nano fibers conformational effects probed by nematic liquid crystal droplets
title Cellulose micro/nano fibers conformational effects probed by nematic liquid crystal droplets
spellingShingle Cellulose micro/nano fibers conformational effects probed by nematic liquid crystal droplets
Oliveira, Alexandre Ernesto Grüninger de
Droplets
Cellulose
Micro/nano fibers
Anchoring
Conformation
title_short Cellulose micro/nano fibers conformational effects probed by nematic liquid crystal droplets
title_full Cellulose micro/nano fibers conformational effects probed by nematic liquid crystal droplets
title_fullStr Cellulose micro/nano fibers conformational effects probed by nematic liquid crystal droplets
title_full_unstemmed Cellulose micro/nano fibers conformational effects probed by nematic liquid crystal droplets
title_sort Cellulose micro/nano fibers conformational effects probed by nematic liquid crystal droplets
author Oliveira, Alexandre Ernesto Grüninger de
author_facet Oliveira, Alexandre Ernesto Grüninger de
author_role author
dc.contributor.none.fl_str_mv Godinho, Maria Helena
Aguirre, Luis
RUN
dc.contributor.author.fl_str_mv Oliveira, Alexandre Ernesto Grüninger de
dc.subject.por.fl_str_mv Droplets
Cellulose
Micro/nano fibers
Anchoring
Conformation
topic Droplets
Cellulose
Micro/nano fibers
Anchoring
Conformation
description Probing micro-/nano-sized surface conformations, which are ubiquitous in biological systems, by using liquid crystal droplets, which change their ordering and optical appearance in response to the presence of more than ten times smaller cellulose based micro/nano fibers, might find new uses in a range of biological environments and sensors. Previous studies indicate that electrospun micro/nano cellulosic fibers produced from liquid crystalline solutions could present a twisted form [1]. In this work, we study the structures of nematic liquid crystal droplets threaded by cellulose fibers prepared from liquid crystalline and isotropic solutions as well as droplets pierced by spider-made fibers [2]. Planar anchoring at the fibers and planar and homeotropic at the drop surfaces allowed probing cellulose fibers different helical structures as well as aligned filaments.
publishDate 2014
dc.date.none.fl_str_mv 2014-09
2014-12
2014-09-01T00:00:00Z
2017-12-17T01:30:17Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10362/13929
url http://hdl.handle.net/10362/13929
dc.language.iso.fl_str_mv eng
language eng
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.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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