122 citations · 741 across the 23 of their papers we have counts for
23 papers
Scattering-matrix approach for a quantitative evaluation of the topological protection in valley photonic crystals
Gaëtan Lévêque, Yan Pennec, Pascal Szriftgiser +2
In this work, we use valley-topological triangular resonators coupled to an input waveguide to evaluate the quality of the topological protection. To that purpose, we first analyze…
Vertical engineering for large stimulated Brillouin scattering in unreleased silicon-based waveguides
Laura Mercadé, Alexander V. Korovin, Yan Pennec +2
Strong acousto-optic interaction in silicon-based waveguides generally requires releasing of the silicon core to avoid mechanical leakage into the underlying silica substrate. This…
Polarization-dependent and Valley-protected Lamb Waves in Asymmetric Pillared Phononic Crystals
Wei Wang, Bernard Bonello, Bahram Djafari-Rouhani +1
We present the realization of the topological valley-protected zero-order antisymmetric (A0) or symmetric (S0) and zero-order shear-horizontal (SH0) Lamb waves at different domain…
Valley and pseudospin-valley topologically protected edge states in symmetric pillared phononic crystals
Wei Wang, Bernard Bonello, Bahram Djafari-Rouhani +1
We present a symmetric double-sided pillared phononic crystals (PPnCs) that can emulate both quantum spin Hall effect (QSHE) and quantum valley Hall effect (QVHE) by solely imposin…
Exceptional point enhances sensitivity of optomechanical mass sensors
P. Djorwé, Y. Pennec, B. Djafari-Rouhani
We propose an efficient optomechanical mass sensor operating at exceptional points (EPs), non-hermitian degeneracies where eigenvalues of a system and their corresponding eigenvect…
Exploring rotational resonance in elastic metamaterial plates to realize doubly negative property
Wei Wang, Bernard Bonello, Bahram Djafari-Rouhani +2
We report the realization of simultaneously negative effective mass density and shear modulus in a single-phase asymmetric double-sided pillared metamaterial. The negative effectiv…