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Related Concept Videos

Mechanism of Ciliary Motion01:05

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The ciliary structures were first seen in 1647 by Antonie Leeuwenhoek while observing the protozoans. In lower organisms, these appendages are responsible for cell movement, while in higher organisms, these appendages help in the movement of the extracellular fluids within the body cavities.
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
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Updated: Aug 10, 2025

Stretching Short Sequences of DNA with Constant Force Axial Optical Tweezers
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Cycloid-structured optical tweezers.

Wenjun Wei, Liuhao Zhu, Yuping Tai

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    |February 15, 2023
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    Summary
    This summary is machine-generated.

    Researchers developed new cycloid-structured optical tweezers capable of precise particle manipulation. These advanced optical tweezers enable controlled start, stop, and variable-velocity movements along complex paths.

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    Area of Science:

    • Optics and Photonics
    • Microscopy and Manipulation
    • Nanotechnology

    Background:

    • Optical tweezers are essential tools for manipulating microscopic particles.
    • Existing optical tweezer technologies have limitations in controlling particle dynamics and trajectory complexity.

    Purpose of the Study:

    • To design and demonstrate novel cycloid-structured optical tweezers.
    • To achieve precise control over particle motion, including dynamic characteristics like start, stop, and variable velocity.
    • To provide a versatile platform for complex microparticle manipulation.

    Main Methods:

    • Utilized a modified cycloid structure for optical tweezer design.
    • Employed holographic shaping techniques for beam manipulation.
    • Experimentally validated performance using polystyrene micro-sphere manipulation.

    Main Results:

    • Successfully realized dynamic control of trapped particles, including start, stop, and variable-velocity motions.
    • Demonstrated versatile trajectory control for microparticle manipulation.
    • Verified the superiority of the novel cycloid-structured optical tweezers through experimental manipulation of polystyrene micro-spheres.

    Conclusions:

    • The developed cycloid-structured optical tweezers offer advanced capabilities for particle manipulation.
    • This novel platform enables more complex and precise control over microparticle dynamics.
    • The technology holds potential for applications in various scientific and technological fields requiring microscale manipulation.