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dc.contributor.authorBramhavar, Suraj
dc.contributor.authorPrada, Claire
dc.contributor.authorMaznev, Alexei
dc.contributor.authorEvery, Arthur G.
dc.contributor.authorNorris, Theodore B.
dc.contributor.authorMurray, Todd W.
dc.date.accessioned2011-06-09T17:30:14Z
dc.date.available2011-06-09T17:30:14Z
dc.date.issued2011-01
dc.date.submitted2010-12
dc.identifier.issn1098-0121
dc.identifier.issn1550-235X
dc.identifier.urihttp://hdl.handle.net/1721.1/63805
dc.description.abstractWe study negative refraction and focusing of elastic waves in a simple mechanical system comprised of a freestanding plate with a step change in thickness. A point-focused and intensity-modulated laser source is used to excite backward-propagating Lamb waves on one side of the step, and the displacement field is probed using an optical interferometer. Conversion between forward- and backward-propagating modes at the interface leads to negative refraction, and we demonstrate for the first time the operation of a flat lens, similar to that predicted by Veselago in negative-index media, for guided elastic waves in isotropic media. We propose that guided elastic waves provide a convenient and powerful experimental test bed for the study of negative-index physics.en_US
dc.description.sponsorshipNational Science Foundation (U.S.) (Grant No. CMMI 0448796)en_US
dc.description.sponsorshipNational Science Foundation (U.S.) (Grant No. IIP 0712496)en_US
dc.language.isoen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevB.83.014106en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceAPSen_US
dc.titleNegative refraction and focusing of elastic Lamb waves at an interfaceen_US
dc.typeArticleen_US
dc.identifier.citationBramhavar, Suraj et al. "Negative refraction and focusing of elastic Lamb waves at an interface." Phys. Rev. B 83, 014106 (2011)© 2011 American Physical Society.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Chemistryen_US
dc.contributor.approverMaznev, Alexei
dc.contributor.mitauthorMaznev, Alexei
dc.relation.journalPhysical Review Ben_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsBramhavar, Suraj; Prada, Claire; Maznev, Alexei; Every, Arthur; Norris, Theodore; Murray, Todden
mit.licensePUBLISHER_POLICYen_US
mit.metadata.statusComplete


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