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Opto-mechanical oscillator in a nanoliter droplet

  Articoli su Riviste JCR/ISI  (anno 2018)

Autori:  Giorgini A., Avino S., Malara P., De Natale P., Gagliardi G

Affiliazione Autori:  Consiglio Nazionale delle Ricerche, Istituto Nazionale di Ottica (INO), via Campi Flegrei, 34—Comprensorio A. Olivetti, Pozzuoli, 80078, Italy; Consiglio Nazionale delle Ricerche, Istituto Nazionale di Ottica (INO), Largo E. Fermi 6, Firenze, 50125, Italy

Riassunto:  Droplets are very simple physical systems, whereby surface tension shapes liquids into ideal opto-mechanical devices. This has recently enabled low-viscosity liquid samples to serve as miniature acoustic resonators harnessing optical generation of bulk vibrations, capillaries, or surface waves. Uniquely, a simple room-temperature pendant droplet can be activated as a hypersound-laser emitter when illuminated by a free-space, low-power visible laser thanks to stimulated Brillouin scattering of optical and acoustic whispering-gallery modes. Here, we demonstrate continuous operation of a liquid polymer opto-mechanical resonator and characterize its quality factor and long-term frequency stability. Our results point to the feasibility of all-liquid micro-mechanical oscillators working in the 50-100 MHz range. The stimulated generation of high-quality surface waves on nanoliter droplets gives momentum to new optical schemes for characterization of material viscous-elastic properties, laboratory investigation of atmospheric phenomena, and mass sensing for direct analysis of biological fluids based on ultrasound-hypersound coherent generation and detection. (C) 2018 Optical Society of America

Rivista/Giornale:  OPTICS LETTERS
Volume n.:  43 (15)      Pagine da: 3473  a: 3476
Ulteriori informazioni:  A. G. acknowledges support by the Italian Ministry of Education & Research project on Extreme Light Infrastructure. The authors are grateful to T. Carmon for helpful discussions and G. Notariale for technical assistance.
DOI: 10.1364/OL.43.003473

   *Citazioni: 2
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  19/05/2019

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