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...

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Autores principales:	S. R. Shelley, J. G. Beadle, A. P. Hibbins, J. R. Sambles
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b1c4f54a91944d57a7221b2d96c752bd
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id	oai:doaj.org-article:b1c4f54a91944d57a7221b2d96c752bd
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spelling	oai:doaj.org-article:b1c4f54a91944d57a7221b2d96c752bd2021-11-14T12:18:34ZSlow acoustic surface modes through the use of hidden geometry10.1038/s41598-021-01269-42045-2322https://doaj.org/article/b1c4f54a91944d57a7221b2d96c752bd2021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01269-4https://doaj.org/toc/2045-2322Abstract 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.S. R. ShelleyJ. G. BeadleA. P. HibbinsJ. R. SamblesNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-6 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q S. R. Shelley J. G. Beadle A. P. Hibbins J. R. Sambles Slow acoustic surface modes through the use of hidden geometry
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.
format	article
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
title	Slow acoustic surface modes through the use of hidden geometry
title_short	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_sort	slow acoustic surface modes through the use of hidden geometry
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/b1c4f54a91944d57a7221b2d96c752bd
work_keys_str_mv	AT srshelley slowacousticsurfacemodesthroughtheuseofhiddengeometry AT jgbeadle slowacousticsurfacemodesthroughtheuseofhiddengeometry AT aphibbins slowacousticsurfacemodesthroughtheuseofhiddengeometry AT jrsambles slowacousticsurfacemodesthroughtheuseofhiddengeometry
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Slow acoustic surface modes through the use of hidden geometry

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