Confined acoustic line modes within a glide-symmetric waveguide
Abstract 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...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-06-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-13782-1 |
| _version_ | 1818488379066548224 |
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| author | Daniel B. Moore Gareth P. Ward John D. Smith Alastair P. Hibbins J. Roy Sambles Timothy A. Starkey |
| author_facet | Daniel B. Moore Gareth P. Ward John D. Smith Alastair P. Hibbins J. Roy Sambles Timothy A. Starkey |
| author_sort | Daniel B. Moore |
| collection | DOAJ |
| description | Abstract 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. |
| first_indexed | 2024-12-10T16:50:21Z |
| format | Article |
| id | doaj.art-6ecbe4d96e594c78ae4fcbbb8d557478 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-10T16:50:21Z |
| publishDate | 2022-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-6ecbe4d96e594c78ae4fcbbb8d5574782022-12-22T01:40:54ZengNature PortfolioScientific Reports2045-23222022-06-011211910.1038/s41598-022-13782-1Confined acoustic line modes within a glide-symmetric waveguideDaniel B. Moore0Gareth P. Ward1John D. Smith2Alastair P. Hibbins3J. Roy Sambles4Timothy A. Starkey5Electromagnetic and Acoustic Materials Group, Department of Physics and Astronomy, University of ExeterElectromagnetic and Acoustic Materials Group, Department of Physics and Astronomy, University of ExeterDSTL, Porton Down, SalisburyElectromagnetic and Acoustic Materials Group, Department of Physics and Astronomy, University of ExeterElectromagnetic and Acoustic Materials Group, Department of Physics and Astronomy, University of ExeterElectromagnetic and Acoustic Materials Group, Department of Physics and Astronomy, University of ExeterAbstract 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.https://doi.org/10.1038/s41598-022-13782-1 |
| spellingShingle | Daniel B. Moore Gareth P. Ward John D. Smith Alastair P. Hibbins J. Roy Sambles Timothy A. Starkey Confined acoustic line modes within a glide-symmetric waveguide Scientific Reports |
| 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 |
| url | https://doi.org/10.1038/s41598-022-13782-1 |
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