Zobrazeno 1 - 10
of 172
pro vyhledávání: '"Achilleos, V."'
Autor:
Romero-García, V., Jiménez, N., Theocharis, G., Achilleos, V., Merkel, A., Richoux, O., Tournat, V., Groby, J.-P., Pagneux, V.
Publikováno v:
Comptes Rendus. Physique, Vol 21, Iss 7-8, Pp 713-749 (2021)
In this review, we present the results on sub-wavelength perfect acoustic absorption using acoustic metamaterials made of Helmholtz resonators with different setups. Low frequency perfect absorption requires to increase the number of states at low fr
Externí odkaz:
https://doaj.org/article/40367a8c0fc146d3bcb9f9d39bd86dad
Autor:
Sougleridis, I. Ioannou, Anastasiadis, A., Richoux, O., Achilleos, V., Theocharis, G., Pagneux, V., Diakonos, F. K.
We report on a direct mapping of acoustic slender waveguides to the one dimensional trimer Su- Schrieffer-Heeger model, with neither chiral nor mirror symmetry. Importantly, we can choose to perform this mapping for either the acoustic velocity or pr
Externí odkaz:
http://arxiv.org/abs/2401.14264
Publikováno v:
In Extreme Mechanics Letters September 2024 71
Publikováno v:
In Wave Motion December 2024 131
Publikováno v:
Phys. Rev. B 102, 054201 (2020)
We investigate the dynamical properties of a strongly disordered micropolar lattice made up of cubic block units. This phononic lattice model supports both transverse and rotational degrees of freedom hence its disordered variant posses an interestin
Externí odkaz:
http://arxiv.org/abs/2005.14192
Akademický článek
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Publikováno v:
Phys. Rev. E 99, 032211 (2019)
We numerically investigate the dynamics of an one-dimensional disordered lattice using the Hertzian model, describing a granular chain, and the $\alpha+\beta $ Fermi-Pasta-Ulam-Tsingou model (FPUT). The most profound difference between the two system
Externí odkaz:
http://arxiv.org/abs/1811.10288
Utilizing the effect of losses, we show that symmetric 3-port devices exhibit coherent perfect absorption of waves and we provide the corresponding conditions on the reflection and transmission coefficients. Infinite combinations of asymmetric inputs
Externí odkaz:
http://arxiv.org/abs/1804.07616
Publikováno v:
Phys. Rev. A 98, 023838 (2018)
One-dimensional topological edge modes are usually studied considering the interface between two different semi infinite periodic crystals (PCs) with inverted band structure around the Dirac point. Here we consider the case where the two PCs are fini
Externí odkaz:
http://arxiv.org/abs/1712.08763
Publikováno v:
Phys. Rev. E 97, 042220 (2018)
We investigate the dynamics of highly polydispersed finite granular chains. From the spatio-spectral properties of small vibrations, we identify which particular single-particle displacements lead to energy localization. Then, we address a fundamenta
Externí odkaz:
http://arxiv.org/abs/1707.03162