Acoustic metamaterials for noise reduction: a review
N Gao, Z Zhang, J Deng, X Guo… - Advanced Materials …, 2022 - Wiley Online Library
Noise pollution has become a significant global problem in recent years. Unfortunately,
conventional acoustic materials cannot offer substantial improvements in noise reduction …
conventional acoustic materials cannot offer substantial improvements in noise reduction …
Dirac-like cone-based electromagnetic zero-index metamaterials
Metamaterials with a Dirac-like cone dispersion at the center of the Brillouin zone behave
like an isotropic and impedance-matched zero refractive index material at the Dirac-point …
like an isotropic and impedance-matched zero refractive index material at the Dirac-point …
[HTML][HTML] Active times for acoustic metamaterials
F Zangeneh-Nejad, R Fleury - Reviews in Physics, 2019 - Elsevier
Initially proposed to achieve strong noise isolation levels beyond the mass-density law,
acoustic metamaterials (AMMs) have now overturned the conventional views in all aspects …
acoustic metamaterials (AMMs) have now overturned the conventional views in all aspects …
Various topological phases and their abnormal effects of topological acoustic metamaterials
The last 20 years have witnessed growing impacts of the topological concept on the
branches of physics, including materials, electronics, photonics, and acoustics. Topology …
branches of physics, including materials, electronics, photonics, and acoustics. Topology …
Performing mathematical operations using high-index acoustic metamaterials
F Zangeneh-Nejad, R Fleury - New Journal of Physics, 2018 - iopscience.iop.org
The recent breakthrough in metamaterial-based optical computing devices (2014 Science
343 160) has inspired a quest for similar systems in acoustics, performing mathematical …
343 160) has inspired a quest for similar systems in acoustics, performing mathematical …
Electromagnetic waves in a time periodic medium with step-varying refractive index
TT Koutserimpas, R Fleury - IEEE Transactions on Antennas …, 2018 - ieeexplore.ieee.org
We present an exact mathematical framework for electromagnetic wave propagation in
periodically time-modulated media, in which the permittivity is homogenous and modulated …
periodically time-modulated media, in which the permittivity is homogenous and modulated …
[HTML][HTML] Time-dependent high-contrast subwavelength resonators
H Ammari, EO Hiltunen - Journal of Computational Physics, 2021 - Elsevier
In the field of metamaterials, many intriguing phenomena arise from having a structure which
is periodic in space. In time-dependent structures, conceptually similar properties can arise …
is periodic in space. In time-dependent structures, conceptually similar properties can arise …
[HTML][HTML] Asymptotic Floquet theory for first order ODEs with finite Fourier series perturbation and its applications to Floquet metamaterials
Our aim in this paper is twofold. Firstly, we develop a new asymptotic theory for Floquet
exponents. We consider a linear system of differential equations with a time-periodic …
exponents. We consider a linear system of differential equations with a time-periodic …
Active acoustic resonators with reconfigurable resonance frequency, absorption, and bandwidth
Acoustic resonators play a key role in the development of subwavelength-sized
technologies capable of interacting with airborne audible sound, from its emission and …
technologies capable of interacting with airborne audible sound, from its emission and …