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Related Experiment Video

Updated: May 14, 2026

Optical Trapping of Nanoparticles
13:39

Optical Trapping of Nanoparticles

Published on: January 15, 2013

Optical trapping of nanoparticles.

Jarrah Bergeron1, Ana Zehtabi-Oskuie, Saeedeh Ghaffari

  • 1Electrical and Computer Engineering, University of Victoria.

Journal of Visualized Experiments : Jove
|January 29, 2013
PubMed
Summary

This study introduces a novel double-nanohole optical trapping method for precise manipulation of nanoparticles. This technique enhances light-matter interactions, enabling sensitive trapping and sensing of even very small biological molecules.

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Area of Science:

  • Physics
  • Nanotechnology
  • Biophysics

Background:

  • Optical trapping uses light to manipulate microscopic objects, with applications in biology.
  • Traditional single-beam optical tweezers face limitations with small particles due to high power requirements and potential damage.
  • Self-induced back-action (SIBA) optical trapping offers a non-perturbative approach for trapping smaller particles.

Purpose of the Study:

  • To present an improved SIBA optical trapping technique utilizing a double-nanohole structure.
  • To demonstrate the trapping and sensing capabilities of this enhanced optical trap for nanoparticles.
  • To detail the experimental setup, fabrication, and data acquisition for nanoparticle trapping.

Main Methods:

  • Utilized a Thorlabs Optical Tweezer Kit for the trapping setup assembly.

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Related Experiment Videos

Last Updated: May 14, 2026

Optical Trapping of Nanoparticles
13:39

Optical Trapping of Nanoparticles

Published on: January 15, 2013

Trapping of Micro Particles in Nanoplasmonic Optical Lattice
07:20

Trapping of Micro Particles in Nanoplasmonic Optical Lattice

Published on: September 5, 2017

Fabrication and Operation of a Nano-Optical Conveyor Belt
11:10

Fabrication and Operation of a Nano-Optical Conveyor Belt

Published on: August 26, 2015

  • Fabricated a double-nanohole structure in a metal film and a microfluidic chamber.
  • Prepared samples and detailed the data acquisition procedure for trapping experiments.

    • Main Results:

    • The double-nanohole structure provides strong local field enhancement, leading to significant optical forces.
    • Successfully trapped smaller nanoparticles, including 12 nm silicate spheres and 3.4 nm hydrodynamic radius proteins.
    • Demonstrated effective trapping of 20 nm polystyrene nanospheres using the developed configuration.

    Conclusions:

    • The double-nanohole SIBA optical trapping technique significantly enhances the ability to trap and manipulate nanoscale objects.
    • This method offers improved sensitivity and allows for the manipulation of smaller particles, including biological molecules.
    • The developed setup provides a versatile platform for nanoparticle trapping and sensing applications.