Omnidirectional refractive devices for flexural waves based on graded phononic crystals
Materials Science
2015-06-23 v1
Abstract
Different omnidirectional refractive devices for flexural waves in thin plates are proposed and numerically analyzed. Their realization is explained by means phononic crystal plates, where a previously developed homogenization theory is employed for the design of graded index refractive devices. These devices consist of a circular cluster of inclusions with properly designed gradient in their radius. With this approach, the Luneburg and Maxwell lenses and a family of beam splitters for flexural waves are proposed and analyzed. Results show that these devices work properly in a broadband frequency region, being therefore an efficient approach for the design of refractive devices specially interesting for nano-scale applications.
Cite
@article{arxiv.1410.1507,
title = {Omnidirectional refractive devices for flexural waves based on graded phononic crystals},
author = {Daniel Torrent and Yan Pennec and Bahram Djafari-Rouhani},
journal= {arXiv preprint arXiv:1410.1507},
year = {2015}
}