Phonon transport in an initially twisted polyvinyl acetate nanofiber

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dc.contributorVirginia Techen
dc.contributor.authorLiangruksa, Monrudeeen
dc.contributor.authorPuri, Ishwar K.en
dc.contributor.departmentBiomedical Engineering and Mechanicsen
dc.date.accessed2014-01-10en
dc.date.accessioned2014-01-21T19:28:05Zen
dc.date.available2014-01-21T19:28:05Zen
dc.date.issued2013-05-01en
dc.description.abstractA reduction in phonon thermal conductivity enhances thermoelectric performance. One method to accomplish this is by applying mechanical stress to a nanostructure. We consider an initially twisted 20 nm polyvinyl acetate nanofiber undergoing torsion. Our analytical method uses the continuum approach of Mooney's model. Torsion modifies the phonon dispersion. Angles of twist between 45 degrees and 70 degrees reduce the averaged phonon group velocity and the phonon thermal conductivity but when these angles are increased further, this conductivity increases. This suggests a phonon engineering approach to tune the thermal conductivity of nanomaterials. (C) 2013 AIP Publishing LLC.en
dc.description.sponsorshipNational Nanotechnology Center (NANOTEC)en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationLiangruksa, Monrudee; Puri, Ishwar K., "Phonon transport in an initially twisted polyvinyl acetate nanofiber," Appl. Phys. Lett. 102, 191907 (2013); http://dx.doi.org/10.1063/1.4804428en
dc.identifier.doihttps://doi.org/10.1063/1.4804428en
dc.identifier.issn0003-6951en
dc.identifier.urihttp://hdl.handle.net/10919/24932en
dc.identifier.urlhttp://scitation.aip.org/content/aip/journal/apl/102/19/10.1063/1.4804428en
dc.language.isoen_USen
dc.publisherAIP Publishingen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectLattice thermal-conductivityen
dc.subjectThermoelectric-poweren
dc.subjectLow-temperaturesen
dc.subjectConfinementen
dc.subjectpoly(3,4-ethylenedioxythiophene)en
dc.subjectPolymersen
dc.subjectPolypyrroleen
dc.subjectDerivativesen
dc.subjectComposite materialsen
dc.subjectNanowiresen
dc.subjectPhysicsen
dc.titlePhonon transport in an initially twisted polyvinyl acetate nanofiberen
dc.title.serialApplied Physics Lettersen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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