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Acoustic metamaterial absorbers: The path to commercialization
, 2023 Acoustic metamaterial represents the synergism between wave physics and designed geometric structures, aimed at novel acoustic properties. For the important functionality of acoustic absorption, metamaterials face the challenges posed by a mature ...
Sheng, Ping +3 more
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Acoustics, 2022 Significant potential for acoustic metamaterials to provide a breakthrough in sound attenuation has been unlocked in recent times due to advancements in additive manufacturing techniques.
Daniel Deery +4 more
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Low-frequency sound absorption performance of composite acoustic metamaterials with rotational labyrinth channels and micro-perforated panels [PDF]
AIP AdvancesIn this paper, a kind of novel acoustic metamaterial combined with a rotational labyrinth and a micro-perforated plate is designed. The design of the rotational labyrinth structure combined with micro-perforated plates endows the acoustic metamaterial ...
Xinxin Liu +4 more
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Retrieving effective acoustic impedance and refractive index for size mismatch samples
AIP Advances, 2022 In this paper, we have presented an analytical solution to extract the effective properties of acoustic metamaterials from the measured complex transmission and reflection coefficients when the metamaterial and impedance tube have different sizes.
Mohammad Javad Khodaei +3 more
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A study on acoustic metamaterial to control reflection sound
Nihon Kikai Gakkai ronbunshu, 2017 Acoustic metamaterial can have arbitrary acoustic characteristics , and there is possibility to improve acoustic performance of any products dramatically. As metamaterial, many kind of types have been propounded and studied.
Yukihide NAGAYO +2 more
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Metamaterials for simultaneous acoustic and elastic bandgaps
Scientific Reports, 2021 In this work, we present a single low-profile metamaterial that provides bandgaps of acoustic and elastic waves at the same time. This was done by ensuring impedance mismatch in two different domains, the fluid domain where the acoustic waves propagate ...
Waiel Elmadih +2 more
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Acoustic metamaterials with coupled local resonators for broadband vibration suppression
AIP Advances, 2017 This paper investigates a modified acoustic metamaterial system with local resonators coupled through linear springs. The proposed acoustic metamaterial system can provide three band gaps for broadband vibration suppression.
Guobiao Hu +4 more
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Synthetic Pseudo-Spin-Hall effect in acoustic metamaterials
Nature Communications, 2022 Controlling emission and propagation of acoustic waves offers new design opportunities for acoustic devices. Here the authors demonstrate such controls thanks to the emergence of a synthetic pseudo-spin in two-dimensional acoustic metamaterial.
Matthew Weiner +3 more
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Mitigating Inaudible Ultrasound Attacks on Voice Assistants With Acoustic Metamaterials
IEEE Access, 2023 Voice assistants play an important role in facilitating human–machine interactions and have been widely used in audio consumer electronic products.
Joshua S. Lloyd +3 more
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An active viscoelastic metamaterial for isolation applications
, 2014 Metamaterials are of interest due to their ability to produce novel acoustic behaviour beyond that seen in naturally occurring media. Of particular interest is the appearance of band gaps which lead to very high levels of attenuation within narrow ...
Reynolds, Matthew, Daley, Stephen
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