In this section
@article{Colombi:2016:10.1038/srep27717,
author = {Colombi, A and Colquitt, D and Roux, P and Guenneau, S and Craster, RV},
doi = {10.1038/srep27717},
journal = {Scientific Reports},
title = {A seismic metamaterial: the resonant metawedge},
url = {http://dx.doi.org/10.1038/srep27717},
volume = {6},
year = {2016}
}
TY - JOUR
AB - Critical concepts from three different fields, elasticity, plasmonics and metamaterials, are brought together to design a metasurface at the geophysical scale, the resonant metawedge, to control seismic Rayleigh waves. Made of spatially graded vertical subwavelength resonators on an elastic substrate, the metawedge can either mode convert incident surface Rayleigh waves into bulk elastic shear waves or reflect the Rayleigh waves creating a "seismic rainbow" effect analogous to the optical rainbow for electromagnetic metasurfaces. Time-domain spectral element simulations demonstrate the broadband efficacy of the metawedge in mode conversion while an analytical model is developed to accurately describe and predict the seismic rainbow effect; allowing the metawedge to be designed without the need for extensive parametric studies and simulations. The efficiency of the resonant metawedge shows that large-scale mechanical metamaterials are feasible, will have application, and that the time is ripe for considering many optical devices in the seismic and geophysical context.
AU - Colombi,A
AU - Colquitt,D
AU - Roux,P
AU - Guenneau,S
AU - Craster,RV
DO - 10.1038/srep27717
PY - 2016///
SN - 2045-2322
TI - A seismic metamaterial: the resonant metawedge
T2 - Scientific Reports
UR - http://dx.doi.org/10.1038/srep27717
UR - http://hdl.handle.net/10044/1/33804
VL - 6
ER -