Results 21 to 30 of about 3,555 (220)
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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Effective Negative Mass Nonlinear Acoustic Metamaterial with Pure Cubic Oscillator
Advances in Civil Engineering, 2018 Acoustic metamaterial, which can prohibit effectively the elastic wave propagation in the bandgap frequency range, has broad application prospects in the vibration and noise reduction areas.
Ming Gao, Zhiqiang Wu, Zhijie Wen
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Underwater acoustic metamaterials
National Science Review, 2022 Abstract Acoustic metamaterials have been widely investigated over the past few decades and have realized acoustic parameters that are not achievable using conventional materials. After demonstrating that locally resonant acoustic metamaterials are capable of acting as subwavelength unit cells, researchers have evaluated the possibility ...
Erqian Dong +5 more
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Material Parameters Acquisition and Sound Insulation Performance analysis of Membrane-type Acoustic Metamaterials Applied for Transformer [PDF]
E3S Web of Conferences, 2019 As a light-weight and ultra-thin artificial material, acoustic metamaterial have more different attributes than natural material. The study of sound insulation for acoustic metamaterial is hot, and the membrane-type acoustic metamaterials supplement the ...
Yuchao Ma +4 more
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Broadband ultra-long acoustic jet based on double-foci Luneburg lens [PDF]
JASA Express Letters, 2021 In this paper, a gradient index acoustic metamaterial is proposed based on the concept of the optical modified generalized Luneburg lens (MGLL). With the MGLL, double-foci and high energy density between the two foci can be achieved, which enables the ...
Liuxian Zhao, Timothy Horiuchi, Miao Yu
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AIP Advances, 2023 We proposed an acoustic metamaterial with deep subwavelength thickness for low-frequency underwater sound absorption. The proposed hybrid metamaterial has a perforated facesheet, a fluid-filled square honeycomb core with inside rubber coating, and a ...
Mingyu Duan +3 more
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Acoustic Metamaterials in Aeronautics [PDF]
Applied Sciences, 2018 Metamaterials, man-made composites scaled smaller than the wavelength, have demonstrated a huge potential in their applications in acoustics, opening up for sub--wavelength acoustic absorbers, acoustic invisibility, perfect acoustic mirrors and acoustic lenses for hyper focusing, acoustic illusions and enabling new degrees of freedom in the control of ...
Palma, Giorgio +4 more
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Research on the Sound Insulation Properties of Membrane-type Acoustic Metamaterials [PDF]
E3S Web of Conferences, 2021 Low- and medium-frequency noise from ship cabins is difficult to control effectively. Excessive noise can seriously affect the acoustic stealth performance of ships.
Hao Jinyu +4 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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A transformable anisotropic 3D penta-mode metamaterial
Materials & Design, 2023 Penta-mode metamaterials, composed by solids but behaving as liquid, have great potential in manipulating acoustic wave in fluids. Most work concentrates on 2D penta-mode metamaterial consisting of classic honeycomb lattice and their acoustic ...
Zhibo Wei +4 more
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