High-efficiency collimation of airborne sound through a single deep-subwavelength aperture in an ultra-thin planar plate

Hu, J; Liang, B; Qiu, X

High-efficiency collimation of airborne sound through a single deep-subwavelength aperture in an ultra-thin planar plate

Hu, J Liang, B Qiu, X

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Publication Type:: Journal Article
Citation:: Applied Physics Express, 2019, 12 (2)
Issue Date:: 2019-02-01

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Field	Value	Language
dc.contributor.author	Hu, J	en_US
dc.contributor.author	Liang, B	en_US
dc.contributor.author	Qiu, X https://orcid.org/0000-0002-5181-1220	en_US
dc.date.available	2020-05-25T19:04:21Z
dc.date.issued	2019-02-01	en_US
dc.identifier.citation	Applied Physics Express, 2019, 12 (2)	en_US
dc.identifier.issn	1882-0778	en_US
dc.identifier.uri	http://hdl.handle.net/10453/130530
dc.description.abstract	© 2019 The Japan Society of Applied Physics. We propose a mechanism for high-efficiency collimation of airborne sound through an ultra-thin planar structure perforated with a single deep-subwavelength aperture by combining a zigzag-shaped structure with arrays of subwavelength resonators to increase the equivalent refractive index and eliminate high-order diffractive waves simultaneously. Numerical simulations demonstrate that the proposed mechanism enables remarkably enhanced transmission and strong collimation of the transmitted wave, which propagates for a strikingly long distance exceeding 125 wavelengths. Due to its capabilities and flexibility, the proposed design opens up possibilities for novel compact acoustic-steering devices and may have far-reaching impacts in diverse applications such as acoustic communications and loudspeaker design.	en_US
dc.relation.ispartof	Applied Physics Express	en_US
dc.relation.isbasedon	10.7567/1882-0786/aafd16	en_US
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.classification	Applied Physics	en_US
dc.title	High-efficiency collimation of airborne sound through a single deep-subwavelength aperture in an ultra-thin planar plate	en_US
dc.type	Journal Article
utslib.citation.volume	2	en_US
utslib.citation.volume	12	en_US
utslib.for	0203 Classical Physics	en_US
utslib.for	02 Physical Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	open_access	*
pubs.issue	2	en_US
pubs.publication-status	Published	en_US
pubs.volume	12	en_US

Abstract:

© 2019 The Japan Society of Applied Physics. We propose a mechanism for high-efficiency collimation of airborne sound through an ultra-thin planar structure perforated with a single deep-subwavelength aperture by combining a zigzag-shaped structure with arrays of subwavelength resonators to increase the equivalent refractive index and eliminate high-order diffractive waves simultaneously. Numerical simulations demonstrate that the proposed mechanism enables remarkably enhanced transmission and strong collimation of the transmitted wave, which propagates for a strikingly long distance exceeding 125 wavelengths. Due to its capabilities and flexibility, the proposed design opens up possibilities for novel compact acoustic-steering devices and may have far-reaching impacts in diverse applications such as acoustic communications and loudspeaker design.

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http://hdl.handle.net/10453/130530