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Related Experiment Video

Updated: Jun 10, 2026

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

A simple, optically induced electrokinetic method to concentrate and pattern nanoparticles.

Stuart J Williams1, Aloke Kumar, Nicolas G Green

  • 1Purdue University, Birck Nanotechnology Center, 1205 W State Street, West Lafayette, Indiana 47907, USA.

Nanoscale
|July 21, 2010
PubMed
Summary
This summary is machine-generated.

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This study introduces an optical technique using near-infrared light to concentrate nanoparticles on electrodes. The method creates microfluidic vortices for dynamic control over nanoparticle aggregation without complex setups.

Area of Science:

  • Microfluidics
  • Nanotechnology
  • Optical Physics

Background:

  • Concentrating nanoparticles is crucial for various applications, including diagnostics and materials science.
  • Existing methods often require complex microfabrication or specialized materials.
  • Optical manipulation offers a non-contact approach for particle handling.

Purpose of the Study:

  • To demonstrate a novel optically induced electrokinetic technique for continuous nanoparticle concentration.
  • To investigate the influence of AC signal parameters on nanoparticle aggregation.
  • To showcase the dynamic control over nanoparticle assembly using optical landscapes.

Main Methods:

  • Utilizing a focused near-infrared laser (1064 nm) to induce an electrothermal microfluidic vortex.

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Published on: January 15, 2013

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Last Updated: Jun 10, 2026

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

A Closed-Type Wireless Nanopore Electrode for Analyzing Single Nanoparticles
08:31

A Closed-Type Wireless Nanopore Electrode for Analyzing Single Nanoparticles

Published on: March 20, 2019

Optical Trapping of Nanoparticles
13:39

Optical Trapping of Nanoparticles

Published on: January 15, 2013

  • Applying an AC signal to a parallel plate electrode configuration.
  • Characterizing the technique with 49 nm and 100 nm fluorescent polystyrene particles.

    • Main Results:

    • Continuous concentration of nanoparticles on the electrode surface was achieved.
    • The microfluidic vortex effectively transported and accumulated nanoparticles at its center.
    • Particle aggregation location and shape were dynamically controlled by manipulating the optical field.
    • The technique functioned with standard parallel plate electrodes, avoiding photoconductive materials.

    Conclusions:

    • Optically induced electrokinetics provides a versatile platform for nanoparticle manipulation.
    • This method offers dynamic and precise control over colloidal assembly.
    • The technique's simplicity and effectiveness make it suitable for various microfluidic and nanotechnology applications.