Show simple item record

dc.contributor.authorWallen, S. P.
dc.contributor.authorBoechler, N.
dc.contributor.authorStelling, C.
dc.contributor.authorRetsch, M.
dc.contributor.authorAlvarado-Gil, J. J.
dc.contributor.authorVega-Flick, Alejandro
dc.contributor.authorDuncan, Ryan Andrew
dc.contributor.authorNelson, Keith Adam
dc.contributor.authorMaznev, Alexei
dc.date.accessioned2017-09-18T18:44:01Z
dc.date.available2017-09-18T18:44:01Z
dc.date.issued2017-07
dc.date.submitted2017-05
dc.identifier.issn2469-9950
dc.identifier.issn2469-9969
dc.identifier.urihttp://hdl.handle.net/1721.1/111601
dc.description.abstractWe study the dynamics of an ordered hexagonal monolayer of polystyrene microspheres adhered to a glass substrate coated with a thin aluminum layer. A laser-induced transient grating technique is employed to generate and detect three types of acoustic modes across the entire Brillouin zone in the Γ−K direction: low-frequency contact-based modes of the granular monolayer, high-frequency modes originating from spheroidal vibrations of the microspheres, and surface Rayleigh waves. The dispersion relation of contact-based and spheroidal modes indicates that they are collective modes of the microgranular crystal controlled by particle-particle contacts. We observe a spheroidal resonance splitting caused by the symmetry breaking due to the substrate, as well as an avoided crossing between the Rayleigh and spheroidal modes. The measurements are found to be in agreement with our analytical model.en_US
dc.description.sponsorshipUnited States. Department of Energy (Grant DE-FG02-00ER15087)en_US
dc.description.sponsorshipNational Science Foundation (U.S.) (Grant CHE-1111557)en_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevB.96.024303en_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.sourceAmerican Physical Societyen_US
dc.titleVibrational dynamics of a two-dimensional microgranular crystalen_US
dc.typeArticleen_US
dc.identifier.citationVega-Flick, A. et al. "Vibrational dynamics of a two-dimensional microgranular crystal." Physical Review B 96, 2 (July 2017): 024303 © 2017 American Physical Societyen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Chemistryen_US
dc.contributor.mitauthorVega-Flick, Alejandro
dc.contributor.mitauthorDuncan, Ryan Andrew
dc.contributor.mitauthorNelson, Keith Adam
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
dc.date.updated2017-07-26T22:00:16Z
dc.language.rfc3066en
dc.rights.holderAmerican Physical Society
dspace.orderedauthorsVega-Flick, A.; Duncan, R. A.; Wallen, S. P.; Boechler, N.; Stelling, C.; Retsch, M.; Alvarado-Gil, J. J.; Nelson, K. A.; Maznev, A. A.en_US
dspace.embargo.termsNen_US
dc.identifier.orcidhttps://orcid.org/0000-0002-8574-6033
dc.identifier.orcidhttps://orcid.org/0000-0001-7804-5418
mit.licensePUBLISHER_POLICYen_US
mit.metadata.statusComplete


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record