META 2021, META'12

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From periodically perforated plates to fluid-loaded phononic plates
Hector Estrada, Pilar Candelas, Francisco Belmar, Antonio Uris, F. Javier Garcia de Abajo, Francisco Meseguer

Last modified: 2011-12-30

Abstract


The study of periodically perforated plates and two-dimensional phononic plates has followed separated paths. Although the structure is roughly the same, the differences are produced by taking different perspectives for sound wave propagation, which are valid only if the coupling between the solid and the fluid is weak enough to be neglected. Here we explore a whole range of phenomena taking place in the same structure while interacting with sound waves incident from a surrounding fluid, including those taking place when perforated and phononic plates behaviour are mixed together. The rich physics and exotic effects provide new ways to control sound waves.

Keywords


Phononic plates, Resonant transmission, perforated plates, ultrasound transmission, Lamb waves