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Updated: Jun 29, 2026

Trapping of Micro Particles in Nanoplasmonic Optical Lattice

Trapping of Micro Particles in Nanoplasmonic Optical Lattice

Published on: September 5, 2017

Optically tunable surfaces with trapped particles in microcavities.

R Sainidou¹, F J García de Abajo

¹Instituto de Optica-CSIC, Serrano 121, 28006 Madrid, Spain.

Physical Review Letters

|October 15, 2008

Summary

We developed optically tunable surfaces using gold nanoparticles in gold cavities. External light precisely controls particle position, enabling all-optical tuning of surface optical properties for large-scale systems.

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Area of Science:

Nanophotonics
Plasmonics
Optical Materials

Background:

Metallic nanoparticles exhibit unique optical properties due to surface plasmon resonance.
Controlling nanoparticle behavior is key to developing advanced optical devices.

Purpose of the Study:

To introduce a novel optically tunable surface based on gold nanoparticles within gold cavities.
To demonstrate all-optical control over the optical properties of these surfaces.

Main Methods:

Fabrication of open, water-filled gold cavities.
Trapping metallic gold nanoparticles within these cavities.
Utilizing optical forces from external illumination to manipulate particle positions.

Main Results:

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Optical Trapping of Nanoparticles

Optical Trapping of Nanoparticles

Published on: January 15, 2013

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Last Updated: Jun 29, 2026

Trapping of Micro Particles in Nanoplasmonic Optical Lattice

Trapping of Micro Particles in Nanoplasmonic Optical Lattice

Published on: September 5, 2017

Optical Trapping of Nanoparticles

Optical Trapping of Nanoparticles

Published on: January 15, 2013

Demonstrated dramatic changes in surface optical properties based on nanoparticle presence and location.
Showcased precise, light-induced control over nanoparticle positioning within cavities.
Validated the concept of all-optical tunability for the cavity-particle system.

Conclusions:

The gold nanoparticle-gold cavity system offers a new paradigm for large-scale optically tunable surfaces.
All-optical control via external light provides a versatile method for tuning optical responses.
This technology holds potential for advanced optical systems and applications.