Tunable metasurface for acoustic wave redirection, focusing and source illusion

Zhong Chen; Shixuan Shao; Mehrdad Negahban; Zheng Li

doi:10.1088/1361-6463/ab2abd

Tunable metasurface for acoustic wave redirection, focusing and source illusion

Zhong Chen, Shixuan Shao, Mehrdad Negahban, Zheng Li

Mechanical & Materials Engineering

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

28 Scopus citations

Abstract

Metasurfaces present excellent performance in acoustic wave control with subwavelength thickness, but are typically studied and built for fixed applications. This paper looks at a convenient tunable metasurface design with Helmholtz resonance. Moving sliders in the design allow full phase shift with a high transmission ratio in a broad frequency bandwidth. The design can be used for tunable wave front redirection, focusing with varying wavelengths and sound source illusion, as are shown in numerical and experimental examples. This design could be a superb option when there is a need for tunable acoustic wave modulation.

Original language	English (US)
Article number	395503
Journal	Journal of Physics D: Applied Physics
Volume	52
Issue number	39
DOIs	https://doi.org/10.1088/1361-6463/ab2abd
State	Published - Jul 23 2019

Keywords

acoustic metasurface
tunable illusion effect
tunable redirection angle and focusing length

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Acoustics and Ultrasonics
Surfaces, Coatings and Films

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10.1088/1361-6463/ab2abd

Cite this

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title = "Tunable metasurface for acoustic wave redirection, focusing and source illusion",

abstract = "Metasurfaces present excellent performance in acoustic wave control with subwavelength thickness, but are typically studied and built for fixed applications. This paper looks at a convenient tunable metasurface design with Helmholtz resonance. Moving sliders in the design allow full phase shift with a high transmission ratio in a broad frequency bandwidth. The design can be used for tunable wave front redirection, focusing with varying wavelengths and sound source illusion, as are shown in numerical and experimental examples. This design could be a superb option when there is a need for tunable acoustic wave modulation.",

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AU - Chen, Zhong

AU - Shao, Shixuan

AU - Negahban, Mehrdad

AU - Li, Zheng

PY - 2019/7/23

Y1 - 2019/7/23

N2 - Metasurfaces present excellent performance in acoustic wave control with subwavelength thickness, but are typically studied and built for fixed applications. This paper looks at a convenient tunable metasurface design with Helmholtz resonance. Moving sliders in the design allow full phase shift with a high transmission ratio in a broad frequency bandwidth. The design can be used for tunable wave front redirection, focusing with varying wavelengths and sound source illusion, as are shown in numerical and experimental examples. This design could be a superb option when there is a need for tunable acoustic wave modulation.

AB - Metasurfaces present excellent performance in acoustic wave control with subwavelength thickness, but are typically studied and built for fixed applications. This paper looks at a convenient tunable metasurface design with Helmholtz resonance. Moving sliders in the design allow full phase shift with a high transmission ratio in a broad frequency bandwidth. The design can be used for tunable wave front redirection, focusing with varying wavelengths and sound source illusion, as are shown in numerical and experimental examples. This design could be a superb option when there is a need for tunable acoustic wave modulation.

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KW - tunable illusion effect

KW - tunable redirection angle and focusing length

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Tunable metasurface for acoustic wave redirection, focusing and source illusion

Abstract

Keywords

ASJC Scopus subject areas

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