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Related Experiment Video

Updated: Dec 11, 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

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Thermophoretic tweezers for single nanoparticle manipulation.

Jošt Stergar1,2, Natan Osterman1,2

  • 1Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, Ljubljana, Slovenia.

Beilstein Journal of Nanotechnology
|August 18, 2020
PubMed
Summary

We demonstrate precise control over single nanoparticles in water using light-induced temperature changes. This optical trapping method allows for stable confinement and manipulation of nano-objects by counteracting their natural movement.

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Area of Science:

  • Physics
  • Nanotechnology
  • Physical Chemistry

Background:

  • Nanoparticles in aqueous environments exhibit random Brownian motion.
  • Controlling nanoparticle movement is crucial for various applications, including drug delivery and micro-assembly.
  • Optical manipulation techniques offer non-contact methods for controlling micro- and nano-scale objects.

Purpose of the Study:

  • To develop a method for trapping and manipulating single nano-objects in water.
  • To utilize optically induced temperature gradients for precise control.
  • To demonstrate dynamic and independent manipulation of multiple nanoparticles.

Main Methods:

  • Generating temporally varying temperature gradients using a focused laser.
  • Real-time tracking of nanoparticle position.
Keywords:
lasermicrofluidicsnano-manipulationthermophoresistrappingtweezers

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Last Updated: Dec 11, 2025

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation
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Published on: September 27, 2011

12.6K
Nanomanipulation of Single RNA Molecules by Optical Tweezers
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Plasmonic Trapping and Release of Nanoparticles in a Monitoring Environment
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Plasmonic Trapping and Release of Nanoparticles in a Monitoring Environment

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  • Employing thermophoretic drift to counteract diffusive motion.
  • Numerical modeling to predict trapping behavior.

    • Main Results:

    • Achieved stable confinement of a single nano-object in a micrometer-sized optical trap.
    • Demonstrated precise control over nanoparticle position by opposing random motion.
    • Successfully created and relocated traps dynamically.
    • Showcased controlled, independent manipulation of two nanoparticles simultaneously.

    Conclusions:

    • Optically induced temperature gradients provide an effective means for trapping and manipulating nano-objects in aqueous solutions.
    • The developed method allows for dynamic control and relocation of traps.
    • This technique opens possibilities for advanced nanoscale assembly and manipulation.