Confining and slowing airborne sound with a corrugated metawire

Johan Christensen, P. A. Huidobro, L. Martin-Moreno, F. J. Garcia-Vidal

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

In this letter we present a theoretical study on the acoustic wave propagation along a periodically corrugated perfect rigid wire surrounded by air. It is shown how acoustic surface waves (ASWs) can be engineered with their propagation properties controlled by geometrical means. These highly localized ASWs give rise to strong acoustical field confinement along the wire, whereas the slowing down of sound decelerate the group velocity down to zero. What is believed to be a promising feature of these low-loss propagation properties is the ability to tune sensing and screening applications with good transducer coupling. (C) 2008 American Institute of Physics.
Original languageEnglish
Article number083502
JournalApplied Physics Letters
Volume93
Issue number8
Number of pages3
ISSN0003-6951
DOIs
Publication statusPublished - 2008
Externally publishedYes

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