@unpublished{Skelton:2017, author = {Skelton, EA and Craster, RV and Colombi, A and Colquitt, DJ}, title = {Fluid-loaded metasurfaces}, url = {http://arxiv.org/abs/1705.08407v1}, year = {2017} }
TY - UNPB AB - We consider wave propagation along fluid-loaded structures which take theform of an elastic plate augmented by an array of resonators forming ametasurface, that is, a surface structured with sub-wavelength resonators. Suchsurfaces have had considerable recent success for the control of wavepropagation in electromagnetism and acoustics, by combining the vision ofsub-wavelength wave manipulation, with the design, fabrication and sizeadvantages associated with surface excitation. We explore one aspect of recentinterest in this field: graded metasurfaces, but within the context offluid-loaded structures. Graded metasurfaces allow for selective spatial frequency separation and areoften referred to as exhibiting rainbow trapping. Experiments, and theory, havebeen developed for acoustic, electromagnetic, and even elastic, rainbow devicesbut this has not been approached for fluid-loaded structures that supportsurface waves coupled with the acoustic field in a bulk fluid. This surfacewave, coupled with the fluid, can be used to create an additional effect bydesigning a metasurface to mode convert from surface to bulk waves. Wedemonstrate that sub-wavelength control is possible and that one can createboth rainbow trapping and mode conversion phenomena for a fluid-loaded elasticplate model. AU - Skelton,EA AU - Craster,RV AU - Colombi,A AU - Colquitt,DJ PY - 2017/// TI - Fluid-loaded metasurfaces UR - http://arxiv.org/abs/1705.08407v1 UR - http://hdl.handle.net/10044/1/51326 ER -