Results 11 to 20 of about 2,473 (180)
Ultra-low and ultra-broad-band nonlinear acoustic metamaterials [PDF]
Nature Communications, 2017 Linear acoustic metamaterials based on resonances are generally tunable but limited by their narrow bands. Here, Fang et al. fabricate one- and two-dimensional nonlinear acoustic metamaterials with a broadband, low-frequency, response—greatly suppressing
Xin Fang +4 more
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Research Progress of Locally Resonance Acoustic Metamaterials [PDF]
E3S Web of Conferences, 2021 Bragg scattering phonon crystal and locally resonant acoustic metamaterials were introduced. In order to generate noise reduction, the lattice constant of Bragg scattering phonon crystal should be of the same order of magnitude as the wave length of the ...
Zhehua Du
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Journal of Applied Physics, 2021 Waves are generally characterized by angular frequency ω and wavevector k. Accordingly, this tutorial is structured into two parts, one on resonance-based acoustic metamaterials, in the frequency domain, and one on topological acoustics, based on the wavevector domain as topological structures inherently involve spatial configurations that are a step ...
Jensen Li, Xinhua Wen, Ping Sheng
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A review of underwater acoustic metamaterials for underwater acoustic equipment
Frontiers in Physics, 2022 Researchers use underwater acoustic equipment to explore the unknown ocean environment, which is one of the important means to understand and utilize the ocean.
Zhenjing Zhu +17 more
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Review and prospects of metamaterials used to control elastic waves and vibrations
Frontiers in Physics, 2022 Acoustic metamaterials, artificial composite structures with exotic material properties used to control elastic waves, have become a new frontier in physics, materials science, engineering and chemistry.
Huajie Dai +8 more
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AIP Advances, 2021 Acoustic metamaterials achieve the function of absorbing sound through equivalent negative parameters and bandgaps. Sound absorption is closely related to structural design.
Yan Du +4 more
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Bandgap optimization for chiral acoustic metamaterials based on material selection method
Zhongguo Jianchuan Yanjiu, 2023 ObjectivesThis study seeks to expand the bandgap frequency band, reduce the bandgap starting frequency and analyze and optimize the bandgap parameters of acoustic metamaterials.
Luyun CHEN, Xing XIE
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Transcranial Acoustic Metamaterial Parameters Inverse Designed by Neural Networks
BME Frontiers, 2023 Objective: The objective of this work is to investigate the mapping relationship between transcranial ultrasound image quality and transcranial acoustic metamaterial parameters using inverse design methods.
Yuming Yang +6 more
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Acoustic Metamaterials and Acoustic Foams: Recent Advances [PDF]
Applied Sciences, 2022 Acoustic metamaterials are synthetic materials, made of repeating unit cells that are designed to address an acoustic problem, through the rational design of their micro-features [...]
Reza Hedayati, Mahdi Bodaghi
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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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