Results 61 to 70 of about 9,256 (180)
Three-dimensional acoustic double-zero-index medium with a Dirac-like point
, 2019 We report a design and experimental realization of a three-dimensional (3D) acoustic double-zero-index medium (DZIM), whose effective mass density and compressibility are nearly zero simultaneously.
Chen, Ze-Guo +6 more
core +1 more source
Design of an underwater acoustic bend by pentamode metafluid
, 2017 We design an impedance matching underwater acoustic bend with pentamode microstructure. The proposed bend is assembled by pentamode lattice. The effective density and compressive mod- ulus of each unit cell can be tuned simultaneously, which are ...
Chen, Yi +4 more
core +1 more source
Double-negative acoustic metamaterials [PDF]
Quarterly of Applied Mathematics, 2019 The aim of this paper is to provide a mathematical theory for understanding the mechanism behind the double-negative refractive index phenomenon in bubbly fluids. The design of double-negative metamaterials generally requires the use of two different kinds of subwavelength resonators, which may limits the applicability of double-negative metamaterials.
Ammari, Habib +4 more
openaire +3 more sources
Nature Communications, 2018 Acoustic bianisotropy does not exist in natural materials but can be designed with acoustic metamaterials. Here, Li et al. utilized acoustic bianisotropy and develop a practical metamaterial with improved transmission efficiency which outperforms the ...
Junfei Li +4 more
doaj +1 more source
Acoustic jet based on acoustic metamaterial
, 2021 12 pages, 4 ...
Zhao, Liuxian +2 more
openaire +2 more sources
Horizontal cloaking and vertical reflection by transformation acoustics
AIP Advances, 2013 This investigation shows that if an acoustic metamaterial bounded by an external rectangle and an internal circular cavity is properly engineered by a set of transformation equations that satisfy certain requirements, it can virtually cloak an object ...
Min Kyung Lee, Yoon Young Kim
doaj +1 more source
Electric and Magnetic Excitation of Coherent Magnetic Plasmon Waves in a One-dimensional Meta-chain
, 2010 A one-dimensional diatomic meta-chain with equal-size holes and different-length slits is designed. Broadband coherent magnetic plasmon waves (MPW) are formed in such a system, excited by both the electric resonance in the slits and the magnetic ...
Baena +38 more
core +1 more source
Application of Metamaterial in Renewable Energy: A Review
International Journal of Engineering Materials and ManufactureMetamaterial advancements hold promise for compact renewable energy harvesting, capturing acoustic, electromagnetic, mechanical, and solar energy on a modest scale across global industries.
Ali Ahmad +4 more
doaj +1 more source
Acoustic Transmission Characteristics Based on H-Type Metamaterials
IEEE Access, 2019 To achieve the artificial manipulation of the acoustic wave front, and to produce high-efficiency acoustic focusing effect, this paper designed an $H$ -type locally resonant metamaterial structure based on a two-dimensional three-component local ...
Shuai Tang, Jianning Han
doaj +1 more source
Recent Developments of Acoustic Energy Harvesting: A Review
Micromachines, 2019 Acoustic energy is a type of environmental energy source that can be scavenged and converted into electrical energy for small-scale power applications. In general, incident sound power density is low and structural design for acoustic energy harvesting ...
Ming Yuan +3 more
doaj +1 more source