Confined acoustic line modes within a glide-symmetric waveguide

Confined coupled acoustic line-modes supported by two parallel lines of periodic holes on opposite surfaces of a glide-symmetric waveguide have a hybrid character combining symmetric and anti-symmetric properties. These hybrid coupled acoustic line-modes have a near constant group velocity over a br...

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Autores principales: Moore, Daniel B., Ward, Gareth P., Smith, John D., Hibbins, Alastair P., Sambles, J. Roy, Starkey, Timothy A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9243009/
https://www.ncbi.nlm.nih.gov/pubmed/35768477
http://dx.doi.org/10.1038/s41598-022-13782-1
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author Moore, Daniel B.
Ward, Gareth P.
Smith, John D.
Hibbins, Alastair P.
Sambles, J. Roy
Starkey, Timothy A.
author_facet Moore, Daniel B.
Ward, Gareth P.
Smith, John D.
Hibbins, Alastair P.
Sambles, J. Roy
Starkey, Timothy A.
author_sort Moore, Daniel B.
collection PubMed
description Confined coupled acoustic line-modes supported by two parallel lines of periodic holes on opposite surfaces of a glide-symmetric waveguide have a hybrid character combining symmetric and anti-symmetric properties. These hybrid coupled acoustic line-modes have a near constant group velocity over a broad frequency range as no band gap is formed at the first Brillouin zone boundary. We show that the hybrid character of these confined modes is tuneable as a function of the spacing between the two surfaces. Further we explore how the band-gap reappears as the glide symmetry is broken.
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spelling pubmed-92430092022-07-01 Confined acoustic line modes within a glide-symmetric waveguide Moore, Daniel B. Ward, Gareth P. Smith, John D. Hibbins, Alastair P. Sambles, J. Roy Starkey, Timothy A. Sci Rep Article Confined coupled acoustic line-modes supported by two parallel lines of periodic holes on opposite surfaces of a glide-symmetric waveguide have a hybrid character combining symmetric and anti-symmetric properties. These hybrid coupled acoustic line-modes have a near constant group velocity over a broad frequency range as no band gap is formed at the first Brillouin zone boundary. We show that the hybrid character of these confined modes is tuneable as a function of the spacing between the two surfaces. Further we explore how the band-gap reappears as the glide symmetry is broken. Nature Publishing Group UK 2022-06-29 /pmc/articles/PMC9243009/ /pubmed/35768477 http://dx.doi.org/10.1038/s41598-022-13782-1 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Moore, Daniel B.
Ward, Gareth P.
Smith, John D.
Hibbins, Alastair P.
Sambles, J. Roy
Starkey, Timothy A.
Confined acoustic line modes within a glide-symmetric waveguide
title Confined acoustic line modes within a glide-symmetric waveguide
title_full Confined acoustic line modes within a glide-symmetric waveguide
title_fullStr Confined acoustic line modes within a glide-symmetric waveguide
title_full_unstemmed Confined acoustic line modes within a glide-symmetric waveguide
title_short Confined acoustic line modes within a glide-symmetric waveguide
title_sort confined acoustic line modes within a glide-symmetric waveguide
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9243009/
https://www.ncbi.nlm.nih.gov/pubmed/35768477
http://dx.doi.org/10.1038/s41598-022-13782-1
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