Design of a surface acoustic wave mass sensor in the 100 GHz range

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34 Citazioni (Scopus)

Abstract

A novel design for photoacoustic mass sensors operating above 100 GHz is proposed. The design s based on impulsive optical excitation of a pseudosurface acoustic wave in a surface phononic crystal with nanometric periodic grating, and on time-resolved extreme ultraviolet detection of the pseudosurface acoustic wave frequency shift upon mass loading the device. The present design opens the path to sensors operating in a frequency range currently unaccessible to electro-acoustical transducers, providing enhanced sensitivity, miniaturization and incorporating time-resolving capability while forgoing the piezoelectric substrate requirement.
Lingua originaleEnglish
pagine (da-a)N/A-N/A
Numero di pagine4
RivistaApplied Physics Letters
Volume2012
DOI
Stato di pubblicazionePubblicato - 2012

Keywords

  • Acoustical measurements and instrumentation
  • Acoustics
  • Mesoscopic physics
  • NEMS
  • Nano-optics
  • Phononic crystals
  • Surface Acoustic Waves devices
  • Ultra-fast optics
  • diffraction gratings
  • photoacoustic effect

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