Results 21 to 30 of about 13,339 (215)
Crystals, 2023 Manipulating radiation patterns is challenging, especially at low frequencies. In this paper, we demonstrate that acoustic metamaterials arranged as an array of quadrupoles remarkably improve the directionality of acoustic radiation at low frequencies ...
Qinglei Zeng +3 more
doaj +1 more source
Prospects of acoustic metamaterials for acoustic stealth
Zhongguo Jianchuan Yanjiu, 2020 With the gradual realization of low frequency detection and other characteristics of sonar technology, the development of stealth technology is facing great challenges.
XU Weilong +3 more
doaj +1 more source
Research progress and development trend of smart metamaterials
Frontiers in Physics, 2022 The development of smart metamaterials has brought changes to human society, and various new products based on smart metamaterials are emerging endlessly.
Yongju Zheng +8 more
doaj +1 more source
Multiple Scattering Formulation of Two Dimensional Acoustic and Electromagnetic Metamaterials [PDF]
, 2011 This work presents a multiple scattering formulation of two dimensional acoustic metamaterials. It is shown that in the low frequency limit multiple scattering allows us to define frequency-dependent effective acoustic parameters for arrays of both ...
Sánchez-Dehesa, José, Torrent, Daniel
core +1 more source
Broadband Acoustic Hyperbolic Metamaterial
Physical Review Letters, 2015 Acoustic metamaterials (AMMs) are engineered materials, made from subwavelength structures, that exhibit useful or unusual constitutive properties. There has been intense research interest in AMMs since its first realization in 2000 by Liu et al. A number of functionalities and applications have been proposed and achieved using AMMs.
Shen, Chen +5 more
openaire +4 more sources
Double-negative acoustic metamaterial [PDF]
Physical Review E, 2004 We show here the existence of acoustic metamaterial, in which both the effective density and bulk modulus are simultaneously negative, in the true and strict sense of an effective medium. Our double-negative acoustic system is an acoustic analogue of Veselago's medium in electromagnetism, and shares many unique consequences, such as negative refractive
Li, Jensen Tsan Hang, Chan, Che Ting
openaire +3 more sources
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
doaj +1 more source
Archives of Acoustics, 2021 The problem of reducing noise in transportation is an important research field to prevent accidents and to provide a civilised environment for people. A material that has recently attracted attention in research to reduce noise is acoustic metamaterial ...
Myong Chol PAK +3 more
doaj +1 more source
Horn-like space-coiling metamaterials toward simultaneous phase and amplitude modulation [PDF]
, 2018 Acoustic metasurfaces represent a family of planar wavefront-shaping devices garnering increasing attention due to their capacity for novel acoustic wave manipulation.
Anderson, Stephan +4 more
core +2 more sources
A Review of Acoustic Metamaterials and Phononic Crystals
Crystals, 2020 As a new kind of artificial material developed in recent decades, metamaterials exhibit novel performance and the promising application potentials in the field of practical engineering compared with the natural materials.
Junyi Liu, Hanbei Guo, Ting Wang
doaj +1 more source