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Related Experiment Video

Updated: May 10, 2026

Fabrication and Testing of Microfluidic Optomechanical Oscillators
09:10

Fabrication and Testing of Microfluidic Optomechanical Oscillators

Published on: May 29, 2014

Brillouin cavity optomechanics with microfluidic devices.

Gaurav Bahl1, Kyu Hyun Kim, Wonsuk Lee

  • 1Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA. bahl@illinois.edu

Nature Communications
|June 8, 2013
PubMed
Summary

This study demonstrates optomechanics with liquids by confining them in hollow resonators, enabling optical excitation of mechanical modes. This breakthrough opens new avenues for ultra-low dissipation optomechanical systems using non-solid matter.

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Area of Science:

  • Physics
  • Materials Science
  • Nanotechnology

Background:

  • Cavity optomechanics couples phonon and photon modes in microresonators, primarily studied in solid-state systems.
  • Optomechanics with superfluids promises ultra-low optical and mechanical dissipation.
  • Experiments with non-solid phases of matter are lacking due to challenges with acoustic energy leakage.

Purpose of the Study:

  • To enable optomechanical investigations with liquids, overcoming challenges of acoustic energy dissipation.
  • To develop a method for studying optomechanics in non-solid phases of matter.
  • To explore ultra-low dissipation regimes in liquid-based optomechanical systems.

Main Methods:

  • Confining liquids within hollow resonators to prevent acoustic energy leakage.

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Last Updated: May 10, 2026

Fabrication and Testing of Microfluidic Optomechanical Oscillators
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  • Utilizing microfluidic inlets for liquid delivery.
  • Optically exciting mechanical whispering-gallery modes via light coupled from the exterior.

    • Main Results:

    • Successful optomechanical investigation with liquids confined in hollow resonators.
    • Excitation of mechanical whispering-gallery modes at frequencies from 2 to 11,000 MHz.
    • Demonstration of a method to couple light conventionally from the outside of a capillary containing liquid.

    Conclusions:

    • The developed device enables optomechanics experiments with liquids, a novel approach for non-solid matter.
    • This work paves the way for exploring ultra-low dissipation in liquid-based optomechanical systems.
    • The technique overcomes previous limitations, allowing for broader applications of optomechanics.