Zobrazeno 1 - 10
of 421
pro vyhledávání: '"Theocharis, G."'
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
Autor:
Tzortzakakis, A. F., Katsaris, A., Palaiodimopoulos, N. E., Kalozoumis, P. A., Theocharis, G., Diakonos, F. K., Petrosyan, D.
We consider the non-Hermitian, parity-time (PT) symmetric extensions of the one-dimensional Su-Schrieffer-Heeger (SSH) model in the topological non-trivial configuration. We study the properties of the topologically protected edge states, and develop
Externí odkaz:
http://arxiv.org/abs/2204.06932
Publikováno v:
In Extreme Mechanics Letters September 2024 71
Publikováno v:
In Wave Motion December 2024 131
We study the transverse instability and dynamics of bright soliton stripes in two-dimensional nonlocal nonlinear media. Using a multiscale perturbation method, we derive analytically the first-order correction to the soliton shape, which features an
Externí odkaz:
http://arxiv.org/abs/2105.09170
Publikováno v:
Phys. Rev. A 103, 052409 (2021)
We propose a fast and robust quantum state transfer protocol employing a Su-Schrieffer-Heeger chain, where the interchain couplings vary in time. Based on simple considerations around the terms involved in the definition of the adiabatic invariant, w
Externí odkaz:
http://arxiv.org/abs/2009.09164
Autor:
Romero-García, V., Jiménez, N., Groby, J. -P., Merkel, A., Tournat, V., Theocharis, G., Richoux, O., Pagneux, V.
Publikováno v:
Phys. Rev. Applied 14, 054055 (2020)
Mirror-symmetric acoustic metascreens producing perfect absorption independently of the incidence side are theoretically and experimentally reported in this work. The mirror-symmetric resonant building blocks of the metascreen support symmetric and a
Externí odkaz:
http://arxiv.org/abs/2007.08393
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
Publikováno v:
Phys. Rev. B 102, 174312 (2020)
We show that it is possible to successfully, rapidly and robustly transfer a topological vibrational edge mode across a time-varying mechanical chain. The stiffness values of the springs of the chain are arranged in an alternating staggered way, such
Externí odkaz:
http://arxiv.org/abs/1911.03375