Slow acoustic surface modes through the use of hidden geometry
Abstract The acoustic surface modes supported by a partly covered periodic meander groove structure formed in an assumed perfectly rigid plate are investigated. This allows one to create a slower acoustic surface wave than can be achieved with the same uncovered meander structure. By changing the si...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2021-11-01
|
| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-01269-4 |
| _version_ | 1798034876195143680 |
|---|---|
| author | S. R. Shelley J. G. Beadle A. P. Hibbins J. R. Sambles |
| author_facet | S. R. Shelley J. G. Beadle A. P. Hibbins J. R. Sambles |
| author_sort | S. R. Shelley |
| collection | DOAJ |
| description | Abstract The acoustic surface modes supported by a partly covered periodic meander groove structure formed in an assumed perfectly rigid plate are investigated. This allows one to create a slower acoustic surface wave than can be achieved with the same uncovered meander structure. By changing the size of the uncovered section the phase and group speeds can be tuned. When the uncovered section of the meander structure is centred along the grooves then the distance along the grooves between neighbouring holes is the same on both sides of the structure so no band gap is observed at the first Brillouin zone boundary due to glide symmetry. This then gives quite linear dispersion. As the uncovered section’s position is moved away from the centre of the meander structure a band gap opens at the Brillouin zone boundary. |
| first_indexed | 2024-04-11T20:50:25Z |
| format | Article |
| id | doaj.art-b1c4f54a91944d57a7221b2d96c752bd |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-11T20:50:25Z |
| publishDate | 2021-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-b1c4f54a91944d57a7221b2d96c752bd2022-12-22T04:03:52ZengNature PortfolioScientific Reports2045-23222021-11-011111610.1038/s41598-021-01269-4Slow acoustic surface modes through the use of hidden geometryS. R. Shelley0J. G. Beadle1A. P. Hibbins2J. R. Sambles3Electromagnetic and Acoustic Materials Group, University of ExeterElectromagnetic and Acoustic Materials Group, University of ExeterElectromagnetic and Acoustic Materials Group, University of ExeterElectromagnetic and Acoustic Materials Group, University of ExeterAbstract The acoustic surface modes supported by a partly covered periodic meander groove structure formed in an assumed perfectly rigid plate are investigated. This allows one to create a slower acoustic surface wave than can be achieved with the same uncovered meander structure. By changing the size of the uncovered section the phase and group speeds can be tuned. When the uncovered section of the meander structure is centred along the grooves then the distance along the grooves between neighbouring holes is the same on both sides of the structure so no band gap is observed at the first Brillouin zone boundary due to glide symmetry. This then gives quite linear dispersion. As the uncovered section’s position is moved away from the centre of the meander structure a band gap opens at the Brillouin zone boundary.https://doi.org/10.1038/s41598-021-01269-4 |
| spellingShingle | S. R. Shelley J. G. Beadle A. P. Hibbins J. R. Sambles Slow acoustic surface modes through the use of hidden geometry Scientific Reports |
| title | Slow acoustic surface modes through the use of hidden geometry |
| title_full | Slow acoustic surface modes through the use of hidden geometry |
| title_fullStr | Slow acoustic surface modes through the use of hidden geometry |
| title_full_unstemmed | Slow acoustic surface modes through the use of hidden geometry |
| title_short | Slow acoustic surface modes through the use of hidden geometry |
| title_sort | slow acoustic surface modes through the use of hidden geometry |
| url | https://doi.org/10.1038/s41598-021-01269-4 |
| work_keys_str_mv | AT srshelley slowacousticsurfacemodesthroughtheuseofhiddengeometry AT jgbeadle slowacousticsurfacemodesthroughtheuseofhiddengeometry AT aphibbins slowacousticsurfacemodesthroughtheuseofhiddengeometry AT jrsambles slowacousticsurfacemodesthroughtheuseofhiddengeometry |