Multi-functional programmable active acoustic meta-surface: Acoustic switch, acoustic barrier, and acoustic transmitter

An ultra-sparse, broadband programmable Active Acoustic Meta-surface (AAMS) that is demonstrated to function as a multi-functional Active Acoustic Meta-device is developed. Functionalities Acoustic Barrier (AB), Acoustic Switch (AS), and Acoustic Transmitter (AT) have been successfully explored. AB...

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Bibliographic Details
Published inJournal of applied physics Vol. 136; no. 14
Main Authors Pundir, Anil, Gupta, Arpan, Nag, Sarthak
Format Journal Article
LanguageEnglish
Published 14.10.2024
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Summary:An ultra-sparse, broadband programmable Active Acoustic Meta-surface (AAMS) that is demonstrated to function as a multi-functional Active Acoustic Meta-device is developed. Functionalities Acoustic Barrier (AB), Acoustic Switch (AS), and Acoustic Transmitter (AT) have been successfully explored. AB functions at a broadband frequency of 455 to 679 Hz as an approximately 100% acoustic reflector. The functional range of the AS is 425 to 800 Hz, and similarly, the functional range of the AT is 300 to 800 Hz (the full range of the applied frequency sweep). Being a re-configurable device, the AAMS has variable thickness. On a wavelength scale, it varies from 0.10 λ to 0.99 λ for the said functionalities. Here, λ is the wavelength.
ISSN:0021-8979
1089-7550
DOI:10.1063/5.0222053