Unknown

Dataset Information

0

Extraordinary transmission of gigahertz surface acoustic waves.

ABSTRACT: Extraordinary transmission of waves, i.e. a transmission superior to the amount predicted by geometrical considerations of the aperture alone, has to date only been studied in the bulk. Here we present a new class of extraordinary transmission for waves confined in two dimensions to a flat surface. By means of acoustic numerical simulations in the gigahertz range, corresponding to acoustic wavelengths λ ~ 3-50 μm, we track the transmission of plane surface acoustic wave fronts between two silicon blocks joined by a deeply subwavelength bridge of variable length with or without an attached cavity. Several resonant modes of the structure, both one- and two-dimensional in nature, lead to extraordinary acoustic transmission, in this case with transmission efficiencies, i.e. intensity enhancements, up to ~23 and ~8 in the two respective cases. We show how the cavity shape and bridge size influence the extraordinary transmission efficiency. Applications include new metamaterials and subwavelength imaging.

SUBMITTER: Mezil S 

PROVIDER: S-EPMC5027576 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature

Json Xml
altmetric image

Publications

Extraordinary transmission of gigahertz surface acoustic waves.

Mezil Sylvain S   Chonan Kazuki K   Otsuka Paul H PH   Tomoda Motonobu M   Matsuda Osamu O   Lee Sam H SH   Wright Oliver B OB  

Scientific reports 20160919

Extraordinary transmission of waves, i.e. a transmission superior to the amount predicted by geometrical considerations of the aperture alone, has to date only been studied in the bulk. Here we present a new class of extraordinary transmission for waves confined in two dimensions to a flat surface. By means of acoustic numerical simulations in the gigahertz range, corresponding to acoustic wavelengths λ ~ 3-50 μm, we track the transmission of plane surface acoustic wave fronts between two silico  ...[more]