A cellulose liquid crystal motor: A steam engine of the second kind

Bibliographic Details
Main Author: Geng, Yong
Publication Date: 2013
Other Authors: Almeida, Pedro Lúcio, Fernandes, Susete Nogueira, Cheng, Cheng, Palffy-Muhoray, Peter, Godinho, Maria Helena
Format: Article
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: http://hdl.handle.net/10362/99259
Summary: We acknowledge support from the Portuguese Science and Technology Foundation through grants SFRH/BD/63574/2009, SFRH/BPD/78430/2011 to Y. Geng and S.N. Fernandes respectively, projects PTDC/CTM/099595/2008, PTDC/FIS/110132/2009, PEst-C/CTM/LA0025/2011 (Strategic Project - LA 25 - 2011-2012) and from the U.S. National Science Foundation IIP 1114332.
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spelling A cellulose liquid crystal motor: A steam engine of the second kindGeneralWe acknowledge support from the Portuguese Science and Technology Foundation through grants SFRH/BD/63574/2009, SFRH/BPD/78430/2011 to Y. Geng and S.N. Fernandes respectively, projects PTDC/CTM/099595/2008, PTDC/FIS/110132/2009, PEst-C/CTM/LA0025/2011 (Strategic Project - LA 25 - 2011-2012) and from the U.S. National Science Foundation IIP 1114332.The salient feature of liquid crystal elastomers and networks is strong coupling between orientational order and mechanical strain. Orientational order can be changed by a wide variety of stimuli, including the presence of moisture. Changes in the orientation of constituents give rise to stresses and strains, which result in changes in sample shape. We have utilized this effect to build soft cellulose-based motor driven by humidity. The motor consists of a circular loop of cellulose film, which passes over two wheels. When humid air is present near one of the wheels on one side of the film, with drier air elsewhere, rotation of the wheels results. As the wheels rotate, the humid film dries. The motor runs so long as the difference in humidity is maintained. Our cellulose liquid crystal motor thus extracts mechanical work from a difference in humidity.DCM - Departamento de Ciência dos MateriaisCENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N)RUNGeng, YongAlmeida, Pedro LúcioFernandes, Susete NogueiraCheng, ChengPalffy-Muhoray, PeterGodinho, Maria Helena2020-06-12T22:45:08Z2013-01-042013-01-04T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10362/99259eng2045-2322PURE: 18548515https://doi.org/10.1038/srep01028info:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2024-05-22T17:45:58Zoai:run.unl.pt:10362/99259Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-28T17:17:17.515359Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv A cellulose liquid crystal motor: A steam engine of the second kind
title A cellulose liquid crystal motor: A steam engine of the second kind
spellingShingle A cellulose liquid crystal motor: A steam engine of the second kind
Geng, Yong
General
title_short A cellulose liquid crystal motor: A steam engine of the second kind
title_full A cellulose liquid crystal motor: A steam engine of the second kind
title_fullStr A cellulose liquid crystal motor: A steam engine of the second kind
title_full_unstemmed A cellulose liquid crystal motor: A steam engine of the second kind
title_sort A cellulose liquid crystal motor: A steam engine of the second kind
author Geng, Yong
author_facet Geng, Yong
Almeida, Pedro Lúcio
Fernandes, Susete Nogueira
Cheng, Cheng
Palffy-Muhoray, Peter
Godinho, Maria Helena
author_role author
author2 Almeida, Pedro Lúcio
Fernandes, Susete Nogueira
Cheng, Cheng
Palffy-Muhoray, Peter
Godinho, Maria Helena
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv DCM - Departamento de Ciência dos Materiais
CENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N)
RUN
dc.contributor.author.fl_str_mv Geng, Yong
Almeida, Pedro Lúcio
Fernandes, Susete Nogueira
Cheng, Cheng
Palffy-Muhoray, Peter
Godinho, Maria Helena
dc.subject.por.fl_str_mv General
topic General
description We acknowledge support from the Portuguese Science and Technology Foundation through grants SFRH/BD/63574/2009, SFRH/BPD/78430/2011 to Y. Geng and S.N. Fernandes respectively, projects PTDC/CTM/099595/2008, PTDC/FIS/110132/2009, PEst-C/CTM/LA0025/2011 (Strategic Project - LA 25 - 2011-2012) and from the U.S. National Science Foundation IIP 1114332.
publishDate 2013
dc.date.none.fl_str_mv 2013-01-04
2013-01-04T00:00:00Z
2020-06-12T22:45:08Z
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/10362/99259
url http://hdl.handle.net/10362/99259
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2045-2322
PURE: 18548515
https://doi.org/10.1038/srep01028
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:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
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