Imperial College London
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Dr Sébastien Guenneau

Faculty of Natural Sciences, Department of Physics

Reader in Physics
 
 
 
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Contact

 

s.guenneau Website

 
 
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Location

 

308cBlackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Kadic:2020:10.1016/j.wavemoti.2019.102419,
author = {Kadic, M and Wegener, M and Nicolet, A and Zolla, F and Guenneau, S and Diatta, A},
doi = {10.1016/j.wavemoti.2019.102419},
journal = {Wave Motion},
title = {Elastodynamic behavior of mechanical cloaks designed by direct lattice transformations},
url = {http://dx.doi.org/10.1016/j.wavemoti.2019.102419},
volume = {92},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Steering waves in elastic solids is more demanding than steering waves in electromagnetism or acoustics. As a result, designing material distributions which are the counterpart of optical invisibility cloaks in elasticity poses a major challenge. Waves of all polarizations should be guided around an obstacle to emerge on the downstream side as though no obstacle were there. Recently, we have introduced the direct-lattice-transformation approach. This simple and explicit construction procedure led to extremely good cloaking results in the static case. Here, we transfer this approach to the dynamic case, i.e., to elastic waves or phonons. We demonstrate broadband reduction of scattering, with best suppressions exceeding a factor of five when using cubic coordinate transformations instead of linear ones. To reliably and quantitatively test these cloaks efficiency, we use an effective-medium approach.
AU  - Kadic,M
AU  - Wegener,M
AU  - Nicolet,A
AU  - Zolla,F
AU  - Guenneau,S
AU  - Diatta,A
DO  - 10.1016/j.wavemoti.2019.102419
PY  - 2020///
SN  - 0165-2125
TI  - Elastodynamic behavior of mechanical cloaks designed by direct lattice transformations
T2  - Wave Motion
UR  - http://dx.doi.org/10.1016/j.wavemoti.2019.102419
VL  - 92
ER  -
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