145 citations · 875 across the 27 of their papers we have counts for
6 papers · 1 filter
Gradient index phononic crystals and metamaterials
Yabin Jin, Bahram Djafari-Rouhani, Daniel Torrent
Phononic crystals and acoustic metamaterials are periodic structures whose effective properties can be tailored at will to achieve extreme control on wave propagation. Their refrac…
Interaction of Love waves with coupled cavity modes in a 2D holey phononic crystal
Yuxin Liu, Abdelkrim Talbi, Bahram Djafari-Rouhani +5
The interaction of Love waves with square array of pillars deposited on a cavity defined in a 2D holey phononic crystal is numerically investigated using Finite Element Method. Fir…
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…
Low-power phonon lasing through position-modulated Kerr-type nonlinearity
P. Djorwe, Y. Pennec, B. Djafari-Rouhani
We demonstrate low-power amplification process in cavity optomechanics (COM). This operation is based on the nonlinear position-modulated self-Kerr interaction. Owing to this nonli…
Frequency locking and controllable chaos through exceptional point in optomechanics
P. Djorwe, Y. Pennec, B. Djafari-Rouhani
We engineer mechanical gain (loss) in system formed by two optomechanical cavities (OMCs), that are mechanically coupled. The gain (loss) is controlled by driving the resonator wit…
Analysis of the Robustness of Conventional and Topologically Protected Edge States in Phononic Crystal Plates
Yabin Jin, Daniel Torrent, Bahram Djafari-Rouhani
In this work we theoretically study the interface acoustic states of resonators on a thin plate with topologically protected and conventional designs. Topologically protected inter…