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.
| Original language | English |
|---|---|
| Pages (from-to) | N/A-N/A |
| Number of pages | 4 |
| Journal | Applied Physics Letters |
| Volume | 2012 |
| DOIs | |
| Publication status | Published - 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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