In this section
@article{Chaplain:2020,
author = {Chaplain, GJ and Ponti, JMD and Colombi, A and Fuentes-Dominguez, R and Dryburg, P and Pieris, D and Smith, RJ and Clare, A and Clark, M and Craster, RV},
journal = {Nature Communications},
title = {Tailored elastic surface to body wave Umklapp conversion},
url = {http://arxiv.org/abs/1912.05373v1},
volume = {11},
year = {2020}
}
TY - JOUR
AB - Elastic waves guided along surfaces dominate applications in geophysics, ultrasonic inspection, mechanical vibration, and surface acoustic wave devices; precise manipulation of surface Rayleigh waves and their coupling with polarised body waves presents a challenge that offers to unlock the flexibility in wave transport required for efficient energy harvesting and vibration mitigation devices. We design elastic metasurfaces, consisting of a graded array of rod resonators attached to an elastic substrate that, together with critical insight from Umklapp scattering in phonon-electron systems, allow us to leverage the transfer of crystal momentum; we mode-convert Rayleigh surface waves into bulk waves that form tunable beams. Experiments, theory and simulation verify that these tailored Umklapp mechanisms play a key role in coupling surface Rayleigh waves to reversed bulk shear and compressional waves independently, thereby creating passive self-phased arrays allowing for tunable redirection and wave focusing within the bulk medium.
AU - Chaplain,GJ
AU - Ponti,JMD
AU - Colombi,A
AU - Fuentes-Dominguez,R
AU - Dryburg,P
AU - Pieris,D
AU - Smith,RJ
AU - Clare,A
AU - Clark,M
AU - Craster,RV
PY - 2020///
SN - 2041-1723
TI - Tailored elastic surface to body wave Umklapp conversion
T2 - Nature Communications
UR - http://arxiv.org/abs/1912.05373v1
UR - http://hdl.handle.net/10044/1/80706
VL - 11
ER -