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Related Experiment Video

Updated: Nov 5, 2025

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation
09:29

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation

Published on: September 27, 2011

12.5K

Nonlinear modulation on optical trapping in a plasmonic bowtie structure.

Wenjun Zhang, Yuquan Zhang, Shuoshuo Zhang

    Optics Express
    |May 14, 2021
    PubMed
    Summary
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    Researchers used a gold bowtie structure and a pulsed laser to dynamically control optical tweezers. This breakthrough allows for stable trapping and manipulation of particles, advancing fields like enhanced Raman detection and super-resolution imaging.

    Area of Science:

    • Optics and Photonics
    • Nanotechnology
    • Materials Science

    Background:

    • Surface plasmon optical tweezers utilize micro- and nano-structures for particle manipulation at small scales.
    • Current methods rely on fixed geometric parameters, limiting dynamic manipulation capabilities.
    • Enhanced plasmonic fields offer potential for nonlinear responses and dynamic modulation.

    Purpose of the Study:

    • To theoretically demonstrate dynamic modulation of optical forces and potential wells using nonlinear effects.
    • To investigate the nonlinear Kerr effect in a gold bowtie structure for optical trapping.
    • To provide a method for stable trapping and dynamic control of particles using nanostructure-based plasmonic platforms.

    Main Methods:

    • Theoretical modeling of optical forces and potential wells in a gold bowtie structure.

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    Last Updated: Nov 5, 2025

    Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation
    09:29

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    Published on: September 27, 2011

    12.5K
    Plasmonic Trapping and Release of Nanoparticles in a Monitoring Environment
    09:13

    Plasmonic Trapping and Release of Nanoparticles in a Monitoring Environment

    Published on: April 4, 2017

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  • Simulation of nonlinear Kerr effect under pulsed laser excitation.
  • Analysis of trapping states (position, width, depth) modulation by laser intensity.

    • Main Results:

    • Optical force and potential well modulation achieved via the nonlinear Kerr effect.
    • Dynamic control over trapping states demonstrated by varying incident laser intensity.
    • Stable trapping and precise particle manipulation enabled by the proposed method.

    Conclusions:

    • Nonlinear optical effects provide a new degree of freedom for dynamic modulation of plasmonic tweezers.
    • The gold bowtie structure effectively utilizes the nonlinear Kerr effect for tunable particle trapping.
    • This approach offers significant potential for applications in enhanced Raman detection, super-resolution imaging, and optical sensing.