dc.contributor.author | Bramhavar, Suraj | |
dc.contributor.author | Prada, Claire | |
dc.contributor.author | Maznev, Alexei | |
dc.contributor.author | Every, Arthur G. | |
dc.contributor.author | Norris, Theodore B. | |
dc.contributor.author | Murray, Todd W. | |
dc.date.accessioned | 2011-06-09T17:30:14Z | |
dc.date.available | 2011-06-09T17:30:14Z | |
dc.date.issued | 2011-01 | |
dc.date.submitted | 2010-12 | |
dc.identifier.issn | 1098-0121 | |
dc.identifier.issn | 1550-235X | |
dc.identifier.uri | http://hdl.handle.net/1721.1/63805 | |
dc.description.abstract | We 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.sponsorship | National Science Foundation (U.S.) (Grant No. CMMI 0448796) | en_US |
dc.description.sponsorship | National Science Foundation (U.S.) (Grant No. IIP 0712496) | en_US |
dc.language.iso | en_US | |
dc.publisher | American Physical Society | en_US |
dc.relation.isversionof | http://dx.doi.org/10.1103/PhysRevB.83.014106 | en_US |
dc.rights | Article 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.source | APS | en_US |
dc.title | Negative refraction and focusing of elastic Lamb waves at an interface | en_US |
dc.type | Article | en_US |
dc.identifier.citation | Bramhavar, 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.department | Massachusetts Institute of Technology. Department of Chemistry | en_US |
dc.contributor.approver | Maznev, Alexei | |
dc.contributor.mitauthor | Maznev, Alexei | |
dc.relation.journal | Physical Review B | en_US |
dc.eprint.version | Final published version | en_US |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | en_US |
eprint.status | http://purl.org/eprint/status/PeerReviewed | en_US |
dspace.orderedauthors | Bramhavar, Suraj; Prada, Claire; Maznev, Alexei; Every, Arthur; Norris, Theodore; Murray, Todd | en |
mit.license | PUBLISHER_POLICY | en_US |
mit.metadata.status | Complete | |