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Updated: Sep 28, 2025

Direct Force Measurements of Subcellular Mechanics in Confinement using Optical Tweezers
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Tunable and enhanced optical force with bound state in the continuum.

Haoye Qin, Walid Redjem, Boubacar Kante

    Optics Letters
    |April 1, 2022
    PubMed
    Summary

    Optical bound states in the continuum (BIC) enable tunable optical forces and torques for light-actuated devices. This research demonstrates BIC modes for enhanced light-matter interactions, paving the way for advanced metavehicles.

    Area of Science:

    • Photonics and Nanotechnology
    • Optical Physics
    • Metamaterials

    Background:

    • Light-actuated devices are crucial for space, biomedical, and sensing applications.
    • Optical bound states in the continuum (BIC) offer unique light-trapping and enhanced light-matter interaction capabilities.

    Purpose of the Study:

    • To demonstrate the generation of enhanced and tunable optical forces and torques using BIC modes.
    • To investigate the control of these optical forces via wavelength and polarization.
    • To evaluate the practical applications of BIC-assisted metavehicles through simulations.

    Main Methods:

    • Theoretical investigation of BIC modes for optical force and torque generation.
    • Analysis of force and torque spectra near high-Q resonance BIC modes.

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  • Finite-size simulations of BIC-assisted metavehicles.

    • Main Results:

    • BIC modes enable enhanced and tunable optical forces and torques.
    • Sharp and controllable spectral lines observed in force and torque spectra near BIC resonances.
    • Wavelength and polarization tunability effectively control optical forces on BIC-enclosed structures.

    Conclusions:

    • BIC modes are a promising mechanism for generating and controlling optical forces and torques.
    • The findings support the development of BIC-assisted metavehicles for practical applications.
    • This work highlights the potential of BICs in optical manipulation and actuation.