Results 31 to 40 of about 13,339 (215)
Sustainable Solutions in Sound Shielding: Harnessing Metamaterials for Acoustic Cloaking [PDF]
E3S Web of ConferencesThe development of metamaterials promises to enable smallscale, worldwide industry-wide acoustic, electromagnetic, mechanical, and solar energy harvesting.
Singh Thapa Devendra +6 more
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Crystals, 2022 We propose the design method for broadband acoustic metamaterials based on the concept of transformation acoustics. Two-dimensional distributed transmission-line (TL) models for full-tensor anisotropic electromagnetic metamaterials are applied to full ...
Tsutomu Nagayama +3 more
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Invisibility and Inverse Problems [PDF]
, 2008 This survey of recent developments in cloaking and transformation optics is an expanded version of the lecture by Gunther Uhlmann at the 2008 Annual Meeting of the American Mathematical Society.Comment: 68 pages, 12 figures.
Greenleaf, Allan +3 more
core +2 more sources
Frontiers in Mechanical Engineering, 2021 Underwater acoustic wave absorption and control play an important role in underwater applications. Various types of underwater acoustic metamaterials have been proposed in recent years with the vigorous development of acoustic metamaterials.
Junyi Wang, Jiaming Hu, Yun Chen
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Reverse Doppler Effect of Sound
, 2009 We report observation of reverse Doppler effect in a double negative acoustic metamaterial. The metamaterial exhibited negative phase velocity and positive group velocity.
C. Caloz +6 more
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Predicting double negativity using transmitted phase in space coiling metamaterials [PDF]
Royal Society Open Science, 2018 Metamaterials are engineered materials that offer the flexibility to manipulate the incident waves leading to exotic applications such as cloaking, extraordinary transmission, sub-wavelength imaging and negative refraction.
Santosh K. Maurya +3 more
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Acoustic Supercoupling in a Zero-Compressibility Waveguide
, 2018 Funneling acoustic waves through largely mismatched channels is of fundamental importance to tailor and transmit sound for a variety of applications. In electromagnetics, zero-permittivity metamaterials have been used to enhance the coupling of energy in
Alù, A. +3 more
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Acoustic Propagation Characteristics of Metamaterials With Tubular Structures
IEEE Access, 2018 To generate acoustic waves with abnormal transmission characteristics different from those of traditional natural acoustic materials, we studied the propagation of acoustic waves in resonant phononic crystals.
Shuai Tang, Jianning Han
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Acoustic blackbody through instability-induced softening
Communications PhysicsPerfect wave absorption across all wavelengths is forbidden by the causality principle. Here we demonstrate an approach that circumvents this fundamental limitation in acoustics by coupling unstable components to achieve zero static modulus.
Min Yang +3 more
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Isotropic-medium three-dimensional cloaks for acoustic and electromagnetic waves
, 2012 We propose a generalization of the two-dimensional eikonal-limit cloak derived from a conformal transformation to three dimensions. The proposed cloak is a spherical shell composed of only isotropic media; it operates in the transmission mode and ...
Blair D. E. +5 more
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