Journal ArticleDOI
Acoustic metasurface with hybrid resonances
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TLDR
It is demonstrated that by using a simple construction, an acoustically reflecting surface can acquire hybrid resonances and becomes impedance-matched to airborne sound at tunable frequencies, such that no reflection is generated.Abstract:
Acoustic impedance-matched surfaces do not reflect incident waves. Traditional means of acoustic absorption have so far resulted in imperfect impedance matching and bulky structures, or require costly and sophisticated electrical design. Inspired by electromagnetic metamaterials, a subwavelength acoustically reflecting surface with hybrid resonances and impedance-matched to airborne sound at tunable frequencies is now demonstrated.read more
Citations
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Journal ArticleDOI
Controlling sound with acoustic metamaterials
TL;DR: In this article, a review of the design and properties of active acoustic metamaterials can be found, as well as an overview of future directions in the field of sound manipulation.
Journal ArticleDOI
Acoustic metamaterials: From local resonances to broad horizons.
Guancong Ma,Ping Sheng +1 more
TL;DR: This review traces the development of acoustic metamaterials from the initial findings of mass density and bulk modulus frequency dispersions in locally resonant structures to the diverse functionalities afforded by the perspective of negative constitutive parameter values, and their implications for acoustic wave behaviors.
Journal ArticleDOI
Wavefront modulation and subwavelength diffractive acoustics with an acoustic metasurface
TL;DR: The demonstrated metasurface can not only steer an acoustic beam as expected from the generalized Snell's law, but also exhibits various unique properties such as conversion from propagating wave to surface mode, extraordinary beam-steering and apparent negative refraction through higher-order diffraction.
Journal ArticleDOI
Acoustic metasurface-based perfect absorber with deep subwavelength thickness
TL;DR: In this article, a metasurface-based perfect absorber capable of achieving the total absorption of acoustic wave in an extremely low frequency region is presented. But, the method is not suitable for high frequency applications due to the extremely thin thickness and high efficiency of the material.
Journal ArticleDOI
Ultra-sparse metasurface for high reflection of low-frequency sound based on artificial Mie resonances
TL;DR: An ultraslow-fluid-like particle with intense artificial Mie resonances for low-frequency airborne sound and a 0.15λ-thick, 15%-filling ratio metasurface with an insertion loss over 93.4%.
References
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Journal ArticleDOI
Light Propagation with Phase Discontinuities: Generalized Laws of Reflection and Refraction
Nanfang Yu,Patrice Genevet,Patrice Genevet,Mikhail A. Kats,Francesco Aieta,Francesco Aieta,Jean-Philippe Tetienne,Jean-Philippe Tetienne,Federico Capasso,Zeno Gaburro,Zeno Gaburro +10 more
TL;DR: In this article, a two-dimensional array of optical resonators with spatially varying phase response and subwavelength separation can imprint phase discontinuities on propagating light as it traverses the interface between two media.
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Flexible triboelectric generator
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Planar Photonics with Metasurfaces
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