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Related Experiment Video

Updated: Oct 7, 2025

Implementation of a Reference Interferometer for Nanodetection
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Multimode Optomechanical Weighting of a Single Nanoparticle.

Samantha Sbarra1, Louis Waquier1, Stephan Suffit1

  • 1Matériaux et Phénomènes Quantiques, Université de Paris, CNRS, UMR 7162, 10 rue Alice Domon et Léonie Duquet, Paris 75013, France.

Nano Letters
|January 12, 2022
PubMed
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Light, science & applications·2025

We developed an optomechanical sensor to precisely measure individual nanoparticle properties like mass and elasticity in real time. This technology advances nanoparticle characterization for future biological applications.

Area of Science:

  • Nanotechnology
  • Optomechanics
  • Sensing technology

Background:

  • Optomechanical systems offer sensitive detection capabilities.
  • Sensing individual nanoparticles requires high precision and real-time data acquisition.

Purpose of the Study:

  • To demonstrate multimode optomechanical sensing of individual nanoparticles.
  • To develop a method for real-time characterization of nanoparticle physical properties.

Main Methods:

  • Utilized a semiconductor optomechanical disk resonator.
  • Tracked multiple mechanical and optical resonant signals simultaneously.
  • Employed a fast camera for precise landing time and position detection.

Main Results:

Keywords:
Optomechanical sensorbiosensingindividual nanoparticlemass spectrometrymultimode analysis

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  • Successfully sensed individual nanoparticles (75-150 nm radius).
  • Obtained real-time physical information including mass.
  • Modeled errors and deviations to enable elasticity evaluation.

    • Conclusions:

    • This optomechanical sensor enables precise, real-time characterization of nanoparticles.
    • The technology is optimized for future analysis of large biological particles like viruses.