Results 31 to 40 of about 547 (170)
A Review of Tunable Acoustic Metamaterials
Applied Sciences, 2018 Acoustic metamaterial science is an emerging field at the frontier of modern acoustics. It provides a prominent platform for acoustic wave control in subwavelength-sized metadevices or metasystems.
Shuang Chen +6 more
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Materials & Design, 2019 Acoustic metamaterials (AMs) are artificially engineered composite materials, structured to have unconventional effective properties for flexibly manipulating the wave propagation, which can produce a broad range of applications such as sound cloaking ...
Xianfeng Man +3 more
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One path to acoustic cloaking [PDF]
New Journal of Physics, 2007 A complete analysis of coordinate transformations in elastic media by Milton et al has shown that, in general, the equations of motion are not form invariant and thus do not admit transformation-type solutions of the type discovered by Pendry et al for electromagnetics.
Steven A Cummer, David Schurig
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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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Grid metastructures for ultrabroadband acoustic cloaking
AIP Advances, 2013 Structural grids (grid metastructures) supporting discrete pressure waves similar to the pressure waves in continuous media are considered. The grids consist of links capable of transmitting longitudinal pressure waves and nodes providing equal pressures
E. V. Chernokozhin, A. Boag
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Recent Advances in Non-Traditional Elastic Wave Manipulation by Macroscopic Artificial Structures
Applied Sciences, 2020 Metamaterials are composed of arrays of subwavelength-sized artificial structures; these architectures give rise to novel characteristics that can be exploited to manipulate electromagnetic waves and acoustic waves. They have been also used to manipulate
Jeonghoon Park, Dongwoo Lee, Junsuk Rho
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On near-cloak in acoustic scattering
Journal of Differential Equations, 2013 19pp
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Crystals, 2021 Simultaneous occurrence of Dirac-like cones at the center of the Brillouin zone (Γ) at two different energy states is termed Dual-Dirac-like cones (DDC) in this article. The occurrence of DDC is a rare phenomenon.
Mustahseen M. Indaleeb, Sourav Banerjee
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An acoustic metafluid: realizing a broadband acoustic cloak
New Journal of Physics, 2008 Recent theory shows that sound can be controlled and directed almost at will provided that suitable materials can be found. Here, we propose a structure permeated by a fluid and designed so that the composite medium, the metafluid, has an anisotropic density tensor, and a compressibility of choice.
Pendry, John B., Li, Jensen Tsan Hang
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Active control approach to temporal acoustic cloaking
Applied Physics Letters, 2023 We propose a realization of a transformation-based acoustic temporal cloak using an active closed-loop control approach to an equivalent electromagnetic problem. Unlike the more common spatial cloaks, the goal of which is hiding fixed objects from detection, the goal of the temporal cloak is hiding the occurrence of events during a finite period of ...
Or Lasri, Lea Sirota
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