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Updated: Jun 21, 2026

Optical Trap Loading of Dielectric Microparticles In Air
08:57

Optical Trap Loading of Dielectric Microparticles In Air

Published on: February 5, 2017

Loss-based optical trap for on-chip particle analysis.

S Kühn1, P Measor, E J Lunt

  • 1School of Engineering, University of CA Santa Cruz, MS: SOE-2, 1156 High Street, Santa Cruz, CA 95064, USA.

Lab on a Chip
|July 17, 2009
PubMed
Summary
This summary is machine-generated.

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Researchers developed a novel optical trap using liquid-core waveguides for precise microparticle manipulation. This new method enables on-chip particle control and analysis, advancing optofluidic miniaturization.

Area of Science:

  • Optics and Photonics
  • Biophysics
  • Microfluidics

Background:

  • Optical traps are essential for micro/nanoscale biological studies.
  • Conventional laser tweezers face limitations in optofluidic miniaturization due to bulk optics.

Purpose of the Study:

  • To introduce a new particle trapping method using liquid-core optical waveguides.
  • To demonstrate the capabilities of this novel trap for on-chip particle manipulation and analysis.

Main Methods:

  • Utilizing propagation loss in confined modes within liquid-core optical waveguides for particle trapping.
  • Employing silica beads and E. coli bacteria as test particles.
  • Integrating optical trapping with single particle fluorescence analysis.

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Optical Trapping of Nanoparticles
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Fabrication and Operation of a Nano-Optical Conveyor Belt

Published on: August 26, 2015

Related Experiment Videos

Last Updated: Jun 21, 2026

Optical Trap Loading of Dielectric Microparticles In Air
08:57

Optical Trap Loading of Dielectric Microparticles In Air

Published on: February 5, 2017

Optical Trapping of Nanoparticles
13:39

Optical Trapping of Nanoparticles

Published on: January 15, 2013

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

Main Results:

  • Achieved single particle trapping with micron-scale accuracy at arbitrary positions.
  • Demonstrated trapping over several millimeters within a single waveguide.
  • Successfully created multiple independent traps in one waveguide.
  • Combined optical trapping with fluorescence analysis for simultaneous control and detection.

Conclusions:

  • This novel waveguide-based optical trap offers precise, on-chip particle control.
  • It overcomes limitations of conventional bulk optics, enabling new optofluidic applications.
  • The technology presents a new paradigm for integrated particle manipulation and analysis.