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Updated: Jun 5, 2026

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

Three dimensional nanoparticle trapping enhanced by surface plasmon resonance.

Jingzhi Wu1, Xiaosong Gan

  • 1Centre for Micro-Photonics, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, VIC, Australia.

Optics Express
|January 4, 2011
PubMed
Summary

We developed a 3D nanoparticle trapping method using metallic nanostructures and surface plasmon resonance. This technique significantly enhances optical forces for nanoparticle confinement, with thermal effects also playing a key role.

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Area of Science:

  • Nanotechnology
  • Optics
  • Materials Science

Background:

  • Surface plasmon resonance (SPR) in metallic nanostructures offers unique optical properties.
  • Controlling nanoparticle behavior in three-dimensional space is crucial for various applications.

Purpose of the Study:

  • To demonstrate a novel three-dimensional nanoparticle trapping approach.
  • To leverage localized surface plasmon resonance (LSPR) for enhanced optical forces.
  • To investigate the influence of thermal effects on nanoparticle trapping.

Main Methods:

  • Utilizing metallic nanostructures to generate localized surface plasmon resonance.
  • Employing numerical simulations to quantify optical forces.
  • Analyzing the thermal effects associated with the plasmonic structure.

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Optical Trapping of Plasmonic Nanoparticles for In Situ Surface-Enhanced Raman Spectroscopy Characterizations
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Plasmonic Trapping and Release of Nanoparticles in a Monitoring Environment
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Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation
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Optical Trapping of Plasmonic Nanoparticles for In Situ Surface-Enhanced Raman Spectroscopy Characterizations
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Main Results:

  • Achieved three-dimensional confinement of nanoparticles.
  • Demonstrated approximately two orders of magnitude stronger optical forces compared to non-plasmonic methods.
  • Identified significant impact of thermal forces on trapping outcomes.

Conclusions:

  • The LSPR of metallic nanostructures provides a powerful mechanism for 3D nanoparticle trapping.
  • Optical forces are significantly enhanced by plasmonic structures.
  • Thermal effects are a critical factor to consider in plasmonic nanoparticle trapping systems.