122 citations · 1.1k across the 47 of their papers we have counts for
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Non-Hermitian Acoustic Metamaterials: the role of Exceptional Points in sound absorption
V. Achilleos, G. Theocharis, O. Richoux +1
Effective non-Hermitian Hamiltonians are obtained to describe coherent perfect absorbing and lasing boundary conditions. PT -symmetry of the Hamiltonians enables to design configur…
Transversal-rotational and zero group velocity modes in tunable magneto-granular phononic crystals
F. Allein, V. Tournat, V. E. Gusev +1
We report on the design and operation of a 1D magneto-granular phononic crystal composed of a chain of steel spherical beads on top of permanent magnets. The magnetic field of the…
Tunable magneto-granular phononic crystals
F. Allein, V. Tournat, V. E. Gusev +1
This paper reports on the study of the dynamics of 1D magneto-granular phononic crystals composed of a chain of spherical steel beads inside a properly designed magnetic field. Thi…
Coherent Perfect Absorption induced by the nonlinearity of a Helmholtz resonator
V. Achilleos, O. Richoux, G. Theocharis
In this work, we analytically report Coherent Perfect Absorption induced by the acoustic nonlinear response of a Helmholtz Resonator side loaded to a waveguide. In particular, we s…