Experimental characterisation of the bound acoustic surface modes supported by honeycomb and hexagonal hole arrays
dc.contributor.author | Starkey, TA | |
dc.contributor.author | Kyrimi, V | |
dc.contributor.author | Ward, GP | |
dc.contributor.author | Sambles, JR | |
dc.contributor.author | Hibbins, AP | |
dc.date.accessioned | 2019-11-04T09:20:09Z | |
dc.date.issued | 2019-10-31 | |
dc.description.abstract | The Dirac point and associated linear dispersion exhibited in the band structure of bound (non-radiative) acoustic surface modes supported on a honeycomb array of holes is explored. An aluminium plate with a honeycomb lattice of periodic sub-wavelength perforations is characterised by local pressure field measurements above the sample surface to obtain the full band-structure of bound modes. The local pressure fields of the bound modes at the K and M symmetry points are imaged, and the losses at frequencies near the Dirac frequency are shown to increase monotonically as the mode travels through the K point at the Dirac frequency on the honeycomb lattice. Results are contrasted with those from a simple hexagonal array of similar holes, and both experimentally obtained dispersion relations are shown to agree well with the predictions of a numerical model. | en_GB |
dc.description.sponsorship | Defence Science and Technology Laboratory (DSTL) | en_GB |
dc.description.sponsorship | Engineering and Physical Sciences Research Council (EPSRC) | en_GB |
dc.identifier.citation | Vol. 9: 15773 | en_GB |
dc.identifier.doi | 10.1038/s41598-019-50446-z | |
dc.identifier.grantnumber | MC_PC_15047 | en_GB |
dc.identifier.grantnumber | EP/L015331/1 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/39484 | |
dc.language.iso | en | en_GB |
dc.publisher | Nature Research | en_GB |
dc.rights | Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. | en_GB |
dc.title | Experimental characterisation of the bound acoustic surface modes supported by honeycomb and hexagonal hole arrays | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2019-11-04T09:20:09Z | |
exeter.article-number | 15773 | en_GB |
dc.description | This is the final version. Available from Nature Research via the DOI in this record. | en_GB |
dc.identifier.eissn | 2045-2322 | |
dc.identifier.journal | Scientific Reports | en_GB |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en_GB |
dcterms.dateAccepted | 2019-09-03 | |
exeter.funder | ::Defence Science and Technology Laboratory (DSTL) | en_GB |
exeter.funder | ::Engineering and Physical Sciences Research Council (EPSRC) | en_GB |
rioxxterms.version | VoR | en_GB |
rioxxterms.licenseref.startdate | 2019-09-03 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2019-11-04T09:17:07Z | |
refterms.versionFCD | VoR | |
refterms.dateFOA | 2019-11-04T09:20:52Z | |
refterms.panel | B | en_GB |
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Except where otherwise noted, this item's licence is described as Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.