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Interfacial wave between acoustic media with Willis coupling.

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Title: Interfacial wave between acoustic media with Willis coupling.
Authors: Li, Zhanyu1 (AUTHOR), Qu, Hongfei1 (AUTHOR), Zhang, Hongkuan1 (AUTHOR), Liu, Xiaoning1 (AUTHOR), Hu, Gengkai1 (AUTHOR) hugeng@bit.edu.cn
Source: Wave Motion. Jun2022, Vol. 112, pN.PAG-N.PAG. 1p.
Subjects: Surface waves (Fluids), Sound waves, Acoustical materials, Acoustic wave propagation, Sound design
Abstract: Acoustic Willis materials, also known as acoustic bianisotropic materials, exhibit unconventional coupling between pressure and velocity, as well as momentum and strain, which have been shown to enable extraordinary control over the propagation of acoustic waves. Our work first predicts that, under proper conditions, interfacial mode can exist at the interface between two acoustic Willis materials, and the existence of the interfacial wave strongly relies on relative orientations of the Willis coupling vectors of the two materials. To demonstrate our theory, experiments are also conducted utilizing a well-designed adjustable acoustic Willis metamaterial. Our experimental results are in good agreement with simulation and theoretical analysis, although there is unavoidable acoustic attenuation in experiments due to damping effect. This work presents a new functional design with acoustic Willis materials and opens a new route to control acoustic waves. • Theory and experiment of interfacial wave between acoustic Willis media. • The conditions for the existence of interfacial wave are given. • An adjustable acoustic Willis metamaterial is designed and fabricated. • This novel functional design opens a new route to control acoustic waves. [ABSTRACT FROM AUTHOR]
Copyright of Wave Motion is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 157418718
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– Name: Abstract
  Label: Abstract
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  Data: Acoustic Willis materials, also known as acoustic bianisotropic materials, exhibit unconventional coupling between pressure and velocity, as well as momentum and strain, which have been shown to enable extraordinary control over the propagation of acoustic waves. Our work first predicts that, under proper conditions, interfacial mode can exist at the interface between two acoustic Willis materials, and the existence of the interfacial wave strongly relies on relative orientations of the Willis coupling vectors of the two materials. To demonstrate our theory, experiments are also conducted utilizing a well-designed adjustable acoustic Willis metamaterial. Our experimental results are in good agreement with simulation and theoretical analysis, although there is unavoidable acoustic attenuation in experiments due to damping effect. This work presents a new functional design with acoustic Willis materials and opens a new route to control acoustic waves. • Theory and experiment of interfacial wave between acoustic Willis media. • The conditions for the existence of interfacial wave are given. • An adjustable acoustic Willis metamaterial is designed and fabricated. • This novel functional design opens a new route to control acoustic waves. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Wave Motion is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1016/j.wavemoti.2022.102922
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Surface waves (Fluids)
        Type: general
      – SubjectFull: Sound waves
        Type: general
      – SubjectFull: Acoustical materials
        Type: general
      – SubjectFull: Acoustic wave propagation
        Type: general
      – SubjectFull: Sound design
        Type: general
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      – TitleFull: Interfacial wave between acoustic media with Willis coupling.
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            NameFull: Li, Zhanyu
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            NameFull: Qu, Hongfei
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            NameFull: Zhang, Hongkuan
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            NameFull: Liu, Xiaoning
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            NameFull: Hu, Gengkai
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          Dates:
            – D: 01
              M: 06
              Text: Jun2022
              Type: published
              Y: 2022
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              Value: 112
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            – TitleFull: Wave Motion
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