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Updated: Mar 14, 2026

Optical Trapping of Nanoparticles

Optical Trapping of Nanoparticles

Published on: January 15, 2013

Nanoparticle Trapping and Characterization Using Open Microcavities.

A A P Trichet¹, P R Dolan¹, D James²

¹Department of Materials, University of Oxford , Oxford OX1 3PH, United Kingdom.

|September 23, 2016

Summary

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This study introduces novel nanotweezers using open microcavities for nanoparticle characterization. The technique precisely measures nanoparticle properties and trap interactions, advancing lab-on-a-chip applications.

Area of Science:

Optics and Photonics
Nanotechnology
Biomedical Engineering

Background:

Accurate nanoparticle characterization is crucial for lab-on-a-chip devices in various scientific fields.
Real-time manipulation and investigation of nanoparticles require deeper understanding of nanoparticle-optical trap interactions.

Purpose of the Study:

To present a new nanotweezers device based on open microcavities.
To demonstrate the capability of this device to determine nanoparticle polarizability and friction coefficient.
To gain insight into nanoparticle-cavity mode interactions.

Main Methods:

Utilizing open microcavities as nanotweezers.
Monitoring cavity mode wavelength shifts as nanoparticles diffuse through the cavity.
Establishing nanoparticle polarizability and friction coefficient through wavelength shift analysis.

Keywords:

Nanophotonics microcavity nanoparticle nanotweezer optical trapping sensor

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Last Updated: Mar 14, 2026

Optical Trapping of Nanoparticles

Optical Trapping of Nanoparticles

Published on: January 15, 2013

Plasmonic Trapping and Release of Nanoparticles in a Monitoring Environment

Plasmonic Trapping and Release of Nanoparticles in a Monitoring Environment

Published on: April 4, 2017

Trapping of Micro Particles in Nanoplasmonic Optical Lattice

Trapping of Micro Particles in Nanoplasmonic Optical Lattice

Published on: September 5, 2017

Main Results:

Successfully established nanoparticle polarizability and friction coefficient.
Provided deep insights into nanoparticle-cavity mode interactions.
Demonstrated built-in calibration for trap strength and spring constant.

Conclusions:

Open microcavity nanotweezers offer a powerful tool for nanoparticle characterization.
The technique is attractive for practical applications in nanoparticle sensing and lab-on-a-chip devices.
This work paves the way for future advancements in optical microcavity applications.