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Realistic prediction and engineering of high-Q modes to implement stable Fano resonances in acoustic devices
Quasi-bound states in the continuum (QBICs) coupling into the propagating spectrum manifest themselves as high-quality factor (Q) modes susceptible to perturbations. This poses a challenge in predicting stable Fano resonances for realistic applications. Besides, where and when the maximum field enha...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10611717/ https://www.ncbi.nlm.nih.gov/pubmed/37891166 http://dx.doi.org/10.1038/s41467-023-42621-8 |
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author | Kronowetter, Felix Maeder, Marcus Chiang, Yan Kei Huang, Lujun Schmid, Johannes D. Oberst, Sebastian Powell, David A. Marburg, Steffen |
author_facet | Kronowetter, Felix Maeder, Marcus Chiang, Yan Kei Huang, Lujun Schmid, Johannes D. Oberst, Sebastian Powell, David A. Marburg, Steffen |
author_sort | Kronowetter, Felix |
collection | PubMed |
description | Quasi-bound states in the continuum (QBICs) coupling into the propagating spectrum manifest themselves as high-quality factor (Q) modes susceptible to perturbations. This poses a challenge in predicting stable Fano resonances for realistic applications. Besides, where and when the maximum field enhancement occurs in real acoustic devices remains elusive. In this work, we theoretically predict and experimentally demonstrate the existence of a Friedrich-Wintgen BIC in an open acoustic cavity. We provide direct evidence for a QBIC by mapping the pressure field inside the cavity using a Laser Doppler Vibrometer (LDV), which provides the missing field enhancement data. Furthermore, we design a symmetry-reduced BIC and achieve field enhancement by a factor of about three compared to the original cavity. LDV measurements are a promising technique for obtaining high-Q modes’ missing field enhancement data. The presented results facilitate the future applications of BICs in acoustics as high-intensity sound sources, filters, and sensors. |
format | Online Article Text |
id | pubmed-10611717 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-106117172023-10-29 Realistic prediction and engineering of high-Q modes to implement stable Fano resonances in acoustic devices Kronowetter, Felix Maeder, Marcus Chiang, Yan Kei Huang, Lujun Schmid, Johannes D. Oberst, Sebastian Powell, David A. Marburg, Steffen Nat Commun Article Quasi-bound states in the continuum (QBICs) coupling into the propagating spectrum manifest themselves as high-quality factor (Q) modes susceptible to perturbations. This poses a challenge in predicting stable Fano resonances for realistic applications. Besides, where and when the maximum field enhancement occurs in real acoustic devices remains elusive. In this work, we theoretically predict and experimentally demonstrate the existence of a Friedrich-Wintgen BIC in an open acoustic cavity. We provide direct evidence for a QBIC by mapping the pressure field inside the cavity using a Laser Doppler Vibrometer (LDV), which provides the missing field enhancement data. Furthermore, we design a symmetry-reduced BIC and achieve field enhancement by a factor of about three compared to the original cavity. LDV measurements are a promising technique for obtaining high-Q modes’ missing field enhancement data. The presented results facilitate the future applications of BICs in acoustics as high-intensity sound sources, filters, and sensors. Nature Publishing Group UK 2023-10-27 /pmc/articles/PMC10611717/ /pubmed/37891166 http://dx.doi.org/10.1038/s41467-023-42621-8 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/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 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 Kronowetter, Felix Maeder, Marcus Chiang, Yan Kei Huang, Lujun Schmid, Johannes D. Oberst, Sebastian Powell, David A. Marburg, Steffen Realistic prediction and engineering of high-Q modes to implement stable Fano resonances in acoustic devices |
title | Realistic prediction and engineering of high-Q modes to implement stable Fano resonances in acoustic devices |
title_full | Realistic prediction and engineering of high-Q modes to implement stable Fano resonances in acoustic devices |
title_fullStr | Realistic prediction and engineering of high-Q modes to implement stable Fano resonances in acoustic devices |
title_full_unstemmed | Realistic prediction and engineering of high-Q modes to implement stable Fano resonances in acoustic devices |
title_short | Realistic prediction and engineering of high-Q modes to implement stable Fano resonances in acoustic devices |
title_sort | realistic prediction and engineering of high-q modes to implement stable fano resonances in acoustic devices |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10611717/ https://www.ncbi.nlm.nih.gov/pubmed/37891166 http://dx.doi.org/10.1038/s41467-023-42621-8 |
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