Metadevices for the confinement of sound and broadband double-negativity behavior

Johan Christensen, Z. Liang, Morten Willatzen

    Research output: Contribution to journalJournal articleResearchpeer-review

    512 Downloads (Pure)

    Abstract

    We show that the acoustic response of perforated and elastically filled rigid screens can give rise to a broad landscape of tunable devices. We begin presenting deep-subwavelength transmission properties of a structured plate and demonstrate the immediate relationship to truly bound surface modes. We extend our theoretical model to analyze structured metal-fluid-metal wave guides for the confinement of sound and present exact expressions for the dispersion relations which describe the hybridization of resonances. We discuss the validity of our analytical model by direct comparison to full-wave simulations and use this technique in the search for broadband response in composite structures where the effective mass density and bulk modulus are simultaneously negative and exhibiting weak influences by viscous losses.
    Original languageEnglish
    Article number100301
    JournalPhysical Review B Condensed Matter
    Volume88
    Issue number10
    Number of pages5
    ISSN0163-1829
    DOIs
    Publication statusPublished - 2013

    Fingerprint

    Dive into the research topics of 'Metadevices for the confinement of sound and broadband double-negativity behavior'. Together they form a unique fingerprint.

    Cite this