Localized surface plate modes via flexural Mie resonances

M. Farhat, P. -Y. Chen, S. Guenneau, Khaled N. Salama, Hakan Bagci

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Surface-plasmon polaritons are naturally generated upon excitation of metals with high-frequency electromagnetic waves. However, the concept of spoof plasmons has made it possible to generate plasmoniclike effects in microwave electrodynamics, magnetics, and even acoustics. Similarly, in this paper, the concept of localized surface plate modes (SPMs) is introduced. It is demonstrated that SPMs can be generated on a two-dimensional (clamped or stress-free) cylindrical surface with subwavelength corrugations, which resides on a thin elastic plate, under excitation by an incident flexural plane wave. Numerical characterization of this corrugated rigid structure shows that it is elastically equivalent to a cylindrical scatterer with dispersive but uniformly negative flexural rigidity. This, indeed, suggests that plasmoniclike elastic materials can be engineered with potential applications in various areas including earthquake sensing and elastic imaging and cloaking.
Original languageEnglish (US)
JournalPhysical Review B
Volume95
Issue number17
DOIs
StatePublished - May 10 2017

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