Impulsively Excited Surface Phononic Crystals: A Route Toward Novel Sensing Schemes

Damiano Nardi, Marco Travagliati, Margaret M. Murnane, Henry C. Kapteyn, Gabriele Ferrini, Claudio Giannetti, Francesco Banfi

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

The application of all-optical time resolved techniques to nanostructured surface phononic crystals (SPCs) enables the generation and detection of hypersonic frequency surface acoustic waves up to 50 GHz, with great potential for innovations in nanometrology and sensing applications. In this paper, we review the advances in this field in both experiments and theory, focusing on the progress in nondestructive nanometrology of ultrathin films, on the potential for a dramatic increase in the sensitivity of mass sensors due to enhanced acoustic wave surface confinement, and on the evolution of this approach to include polymer-coated SPCs for soft material and gas sensing applications. A survey of the enabling innovative optical technologies involved is presented.
Original languageEnglish
Pages (from-to)5142-5150
Number of pages9
JournalIEEE Sensors Journal
Volume15
DOIs
Publication statusPublished - 2015

Keywords

  • phononic crystal
  • surface acoustic waves

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