Observation of two-dimensional acoustic bound states in the continuum
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Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/43662
comunitat-uji-handle3:10234/43643
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Title
Observation of two-dimensional acoustic bound states in the continuumDate
2024-04-09Publisher
Springer NatureBibliographic citation
Martí-Sabaté, M., Li, J., Djafari-Rouhani, B. et al. Observation of two-dimensional acoustic bound states in the continuum. Commun Phys 7, 122 (2024). https://doi.org/10.1038/s42005-024-01615-8Type
info:eu-repo/semantics/articleVersion
info:eu-repo/semantics/publishedVersionSubject
Abstract
The design of devices based on acoustic or optical fields requires the fabrication of cavities and structures capable of efficiently trapping these waves. A special type of cavity can be designed to support resonances ... [+]
The design of devices based on acoustic or optical fields requires the fabrication of cavities and structures capable of efficiently trapping these waves. A special type of cavity can be designed to support resonances with a theoretically infinite quality factor, named bound states in the continuum or BICs. The experimental measurement of such modes is still a challenging problem, as they are, by definition, not accessible from external perturbations. Here we report on the theoretical design and experimental realization of a two-dimensional, fully open acoustic resonator supporting BICs. This accidental BIC, whose symmetry is chosen during design by properly tailoring the geometrical properties of the system, is completely accessible and allows for the direct measurement of the whole pressure field and properties. We experimentally demonstrate its existence with high quality factor and field enhancement properties. [-]
Funder Name
European Union | MCIN/AEI/10.13039/501100011033
Project code
101046489 | FPU18/02725 | PID2021-124814NB-C22
Project title or grant
DYNAMO project | FEDER A way of making Europe
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© The Author(s) 2024
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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