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Article Dans Une Revue Applied Sciences Année : 2020

Phononic Coupled-Resonator Waveguide Micro-Cavities

Résumé

Phononic coupled-resonator waveguide cavities are formed by a finite chain of defects in a complete bandgap phononic crystal slab. The sample is machined in a fused silica plate by femtosecond printing to form an array of cross-shape holes. The collective resonance of the phononic cavities, in the Megahertz frequency range, are excited by a piezoelectric vibrator and imaged by laser Doppler vibrometry. It is found that well-defined resonant cavity modes can be efficiently excited, even though the phononic cavities are distant by a few lattice spacings and are only weakly coupled through evanescent elastic waves. The results suggest the possibility of engineering the dynamical response of a set of coupled phononic cavities by an adequate layout of defects in a phononic crystal slab.
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hal-02993976 , version 1 (07-11-2020)

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  • HAL Id : hal-02993976 , version 1

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Tingting Wang, Sylwester Bargiel, Franck Lardet-Vieudrin, Yan-Feng Wang, Yue - Sheng Wang, et al.. Phononic Coupled-Resonator Waveguide Micro-Cavities. Applied Sciences, 2020, 10 (19), pp.6751 (9). ⟨hal-02993976⟩
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