Subwavelength acoustic monopole source emission enhancement through dual gratings

Jun Mei; Ying Wu

doi:10.1038/s41598-019-48215-z

Subwavelength acoustic monopole source emission enhancement through dual gratings

Jun Mei, Ying Wu

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Acoustic source emission rate is generally low at low frequencies. In this work, we propose a simple design of ‘LEGO’-type acoustic metamaterial that can significantly enhance the low frequency emission rate of an acoustic monopole source. Such enhancement is resulted from the coupling between resonances of a cavity and a dual grating comprised of two concentric layers of periodically distributed narrow slits. We develop an effective medium model to characterize the enhancement. Because of its simple structure, the metamaterial is easy to fabricate and thus facilitates the applications in various domains such as oil exploration.

Original language	English (US)
Journal	Scientific Reports
Volume	9
Issue number	1
DOIs	https://doi.org/10.1038/s41598-019-48215-z
State	Published - Aug 12 2019

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): BAS/1/1626-01-01, OSR-2016-CRG5-2950
Acknowledgements: This work was supported by the National Natural Science Foundation of China (Grant Nos 11274120 and 11574087), King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No. OSR-2016-CRG5-2950 and Baseline Research Fund BAS/1/1626-01-01.

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10.1038/s41598-019-48215-z

https://repository.kaust.edu.sa/bitstream/10754/656561/1/s41598-019-48215-z.pdf

Cite this

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title = "Subwavelength acoustic monopole source emission enhancement through dual gratings",

abstract = "Acoustic source emission rate is generally low at low frequencies. In this work, we propose a simple design of {\textquoteleft}LEGO{\textquoteright}-type acoustic metamaterial that can significantly enhance the low frequency emission rate of an acoustic monopole source. Such enhancement is resulted from the coupling between resonances of a cavity and a dual grating comprised of two concentric layers of periodically distributed narrow slits. We develop an effective medium model to characterize the enhancement. Because of its simple structure, the metamaterial is easy to fabricate and thus facilitates the applications in various domains such as oil exploration.",

author = "Jun Mei and Ying Wu",

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doi = "10.1038/s41598-019-48215-z",

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N2 - Acoustic source emission rate is generally low at low frequencies. In this work, we propose a simple design of ‘LEGO’-type acoustic metamaterial that can significantly enhance the low frequency emission rate of an acoustic monopole source. Such enhancement is resulted from the coupling between resonances of a cavity and a dual grating comprised of two concentric layers of periodically distributed narrow slits. We develop an effective medium model to characterize the enhancement. Because of its simple structure, the metamaterial is easy to fabricate and thus facilitates the applications in various domains such as oil exploration.

AB - Acoustic source emission rate is generally low at low frequencies. In this work, we propose a simple design of ‘LEGO’-type acoustic metamaterial that can significantly enhance the low frequency emission rate of an acoustic monopole source. Such enhancement is resulted from the coupling between resonances of a cavity and a dual grating comprised of two concentric layers of periodically distributed narrow slits. We develop an effective medium model to characterize the enhancement. Because of its simple structure, the metamaterial is easy to fabricate and thus facilitates the applications in various domains such as oil exploration.

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Subwavelength acoustic monopole source emission enhancement through dual gratings

Abstract

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