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dc.contributor.authorDuffy, Daniel
dc.contributor.authorJaved, M
dc.contributor.authorAbdelrahman, MK
dc.contributor.authorWare, TH
dc.contributor.authorWarner, Mark
dc.contributor.authorBiggins, John
dc.date.accessioned2021-12-24T00:31:33Z
dc.date.available2021-12-24T00:31:33Z
dc.date.issued2021-12
dc.identifier.issn2470-0045
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/331771
dc.description.abstractLiquid crystal elastomers contract along their director on heating and recover on cooling, offering great potential as actuators and artificial muscles. If a flat sheet is programed with a spatially varying director pattern, then it will actuate into a curved surface, allowing the material to act as a strong machine such as a grabber or lifter. Here we study the actuation of programed annular sheets which, owing to their central hole, can sidestep constraints on area and orientation. We systematically catalog the set of developable surfaces encodable via axisymmetric director patterns and uncover several qualitatively new modes of actuation, including cylinders, irises, and everted surfaces in which the inner boundary becomes the outer boundary after actuation. We confirm our designs with a combination of experiments and numerics. Many of our actuators can reattain their initial inner or outer radius upon completing actuation, making them particularly promising, as they can avoid potentially problematic stresses in their activated state even when fixed onto a frame or pipe.
dc.publisherAmerican Physical Society (APS)
dc.rightsAll Rights Reserved
dc.rights.urihttp://www.rioxx.net/licenses/all-rights-reserved
dc.subjectcond-mat.soft
dc.subjectcond-mat.soft
dc.titleMetric mechanics with nontrivial topology: Actuating irises, cylinders, and evertors.
dc.typeArticle
dc.publisher.departmentDepartment of Physics Student
dc.publisher.departmentDepartment of Physics
dc.publisher.departmentDepartment of Engineering
dc.date.updated2021-12-22T14:22:11Z
prism.issueIdentifier6
prism.number065004
prism.publicationNamePhys Rev E
prism.volume104
dc.identifier.doi10.17863/CAM.79220
dcterms.dateAccepted2021-11-22
rioxxterms.versionofrecord10.1103/PhysRevE.104.065004
rioxxterms.versionAM
dc.contributor.orcidDuffy, Daniel [0000-0002-0383-5527]
dc.contributor.orcidWarner, Mark [0000-0003-3172-0265]
dc.contributor.orcidBiggins, John [0000-0002-7452-2421]
dc.identifier.eissn2470-0053
dc.publisher.urlhttp://dx.doi.org/10.1103/PhysRevE.104.065004
rioxxterms.typeJournal Article/Review
pubs.funder-project-idEPSRC (2148193)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/P034616/1)
pubs.funder-project-idMRC (MR/S017186/1)
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/L015552/1)
cam.issuedOnline2021-12-20
cam.orpheus.success2021-12-23 - Embargo set during processing via Fast-track
cam.depositDate2021-12-22
pubs.licence-identifierapollo-deposit-licence-2-1
pubs.licence-display-nameApollo Repository Deposit Licence Agreement
rioxxterms.freetoread.startdate2021-12-20


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