dc.contributor.author | Wallen, S. P. | |
dc.contributor.author | Boechler, N. | |
dc.contributor.author | Stelling, C. | |
dc.contributor.author | Retsch, M. | |
dc.contributor.author | Alvarado-Gil, J. J. | |
dc.contributor.author | Vega-Flick, Alejandro | |
dc.contributor.author | Duncan, Ryan Andrew | |
dc.contributor.author | Nelson, Keith Adam | |
dc.contributor.author | Maznev, Alexei | |
dc.date.accessioned | 2017-09-18T18:44:01Z | |
dc.date.available | 2017-09-18T18:44:01Z | |
dc.date.issued | 2017-07 | |
dc.date.submitted | 2017-05 | |
dc.identifier.issn | 2469-9950 | |
dc.identifier.issn | 2469-9969 | |
dc.identifier.uri | http://hdl.handle.net/1721.1/111601 | |
dc.description.abstract | We 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.sponsorship | United States. Department of Energy (Grant DE-FG02-00ER15087) | en_US |
dc.description.sponsorship | National Science Foundation (U.S.) (Grant CHE-1111557) | en_US |
dc.publisher | American Physical Society | en_US |
dc.relation.isversionof | http://dx.doi.org/10.1103/PhysRevB.96.024303 | 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 | American Physical Society | en_US |
dc.title | Vibrational dynamics of a two-dimensional microgranular crystal | en_US |
dc.type | Article | en_US |
dc.identifier.citation | Vega-Flick, A. et al. "Vibrational dynamics of a two-dimensional microgranular crystal." Physical Review B 96, 2 (July 2017): 024303 © 2017 American Physical Society | en_US |
dc.contributor.department | Massachusetts Institute of Technology. Department of Chemistry | en_US |
dc.contributor.mitauthor | Vega-Flick, Alejandro | |
dc.contributor.mitauthor | Duncan, Ryan Andrew | |
dc.contributor.mitauthor | Nelson, Keith Adam | |
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 |
dc.date.updated | 2017-07-26T22:00:16Z | |
dc.language.rfc3066 | en | |
dc.rights.holder | American Physical Society | |
dspace.orderedauthors | Vega-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.terms | N | en_US |
dc.identifier.orcid | https://orcid.org/0000-0002-8574-6033 | |
dc.identifier.orcid | https://orcid.org/0000-0001-7804-5418 | |
mit.license | PUBLISHER_POLICY | en_US |
mit.metadata.status | Complete | |