Flat lens for seismic waves
Geophysics
2016-02-16 v1
Abstract
A prerequisite for achieving seismic invisibility is to demonstrate the ability of civil engineers to control seismic waves with artificially structured soils. We carry out large-scale field tests with a structured soil made of a grid consisting of cylindrical and vertical holes in the ground and a low frequency artificial source (< 10 Hz). This allows the identification of a distribution of energy inside the grid, which can be interpreted as the consequence of an effective negative refraction index. Such a flat lens reminiscent of what Veselago and Pendry envisioned for light opens avenues in seismic metamaterials to counteract the most devastating components of seismic signals.
Cite
@article{arxiv.1602.04492,
title = {Flat lens for seismic waves},
author = {Stephane Brule and Stefan Enoch and Sebastien Guenneau},
journal= {arXiv preprint arXiv:1602.04492},
year = {2016}
}