115 citations · 262 across the 7 of their papers we have counts for
7 papers
Perfect absorption in mirror-symmetric acoustic metascreens
V. Romero-García, N. Jiménez, J. -P. Groby +5
Mirror-symmetric acoustic metascreens producing perfect absorption independently of the incidence side are theoretically and experimentally reported in this work. The mirror-symmet…
Ultrasonic nodal chains in topological granular metamaterials
Aurelien Merkel, Johan Christensen
Three-dimensional (3D) Weyl and Dirac semimetals garner considerable attention in condensed matter physics due to the exploration of entirely new topological phases and related unc…
Unidirectional zero sonic reflection in passive symmetric Willis media
Aurélien Merkel, Vicent Romero-García, Jean-Philippe Groby +2
In an effective medium description of acoustic metamaterials, the Willis coupling plays the same role as the bianisotropy in electromagnetism. Willis media can be described by a co…
Enhanced micropolar model for wave propagation in ordered granular materials
A. Merkel, S. Luding
The vibrational properties of a face-centered cubic granular crystal of monodisperse particles are predicted using a discrete model as well as two micropolar models, first the clas…
Control of acoustic absorption in 1D scattering by indirect coupled resonant scatterers
A. Merkel, G. Theocharis, O. Richoux +2
We experimentally report perfect acoustic absorption through the interplay of the inherent losses and transparent modes with high factor. These modes are generated in a two-por…
Perfect and broadband acoustic absorption by critical coupling
V. Romero-García, G. Theocharis, O. Richoux +3
We experimentally and analytically report broadband and narrowband perfect absorption in two different acoustic waveguide-resonator geometries by the mechanism of critical coupling…
Slow sound propagation in lossy locally resonant periodic structures
G. Theocharis, O. Richoux, V. Romero-García +1
We investigate the sound propagation in an air-filled tube periodically loaded with Helmholtz resonators. By tuning the Helmholtz with the Bragg resonance, we study the efficiency…