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Related Experiment Video

Updated: Apr 12, 2026

Optical Trap Loading of Dielectric Microparticles In Air
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Micro particle launcher/cleaner based on optical trapping technology.

Zhihai Liu, Peibo Liang, Yu Zhang

    Optics Express
    |May 14, 2015
    PubMed
    Summary
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    Auxiliary interferometer in an optoelectronic swept-frequency laser and its application to the measurement of the group refractive index.

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    This study introduces a novel single fiber optical tweezers system for precise manipulation of polystyrene microspheres. It uses dual-wavelength lasers to trap and launch particles, enabling efficient cleaning and controlled micro-manipulation.

    Area of Science:

    • Optics and Photonics
    • Microfluidics and Nanotechnology
    • Biophysics

    Background:

    • Controllable launching of microparticles using optical tweezers remains a significant challenge.
    • Existing optical tweezers often lack precise control over particle manipulation, limiting applications.

    Purpose of the Study:

    • To develop and demonstrate a novel single fiber optical tweezers capable of both trapping and launching polystyrene microspheres.
    • To achieve independent control over particle launching and cleaning functions using dual-wavelength laser beams.

    Main Methods:

    • Utilized a single fiber optical tweezers with a tapered fiber tip for trapping polystyrene microspheres (diameter ~10μm).
    • Employed a 980nm laser beam for trapping and a 1480nm laser beam for launching via thermophoresis.

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    Last Updated: Apr 12, 2026

    Optical Trap Loading of Dielectric Microparticles In Air
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    Optical Trap Loading of Dielectric Microparticles In Air

    Published on: February 5, 2017

    9.6K
    Optical Trapping of Nanoparticles
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    Optical Trapping of Nanoparticles

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    Fabrication and Testing of Miniature Automatic Photophoretic Trapping Rigs
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  • Controlled launching force relative to trapping force to achieve either cleaning or launching of microspheres.

    • Main Results:

    • Successfully demonstrated independent control over trapping and launching functions of polystyrene microspheres.
    • Achieved microsphere cleaning by selectively removing unwanted particles.
    • Enabled controlled launching of trapped microspheres with measurable velocity and acceleration.

    Conclusions:

    • The developed single fiber optical tweezers offers expanded functionalities for micro-manipulation.
    • This technology provides a versatile platform for practical applications in micro-manipulation research fields.