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Updated: Jun 23, 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

Active plasmonic devices via electron spin.

C A Baron1, A Y Elezzabi

  • 1Department of Electrical and Computer Engineering, Ultrafast Optics and Nanophotonics Laboratory, University of Alberta, Edmonton, Canada. cbaron@ualberta.ca

Optics Express
|April 29, 2009
PubMed
Summary
This summary is machine-generated.

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This study introduces active terahertz devices using particle plasmon oscillations in micro-particles. An external magnetic field actively controls terahertz radiation phase for novel plasmonic devices.

Area of Science:

  • Physics
  • Materials Science
  • Electrical Engineering

Background:

  • Terahertz (THz) technology requires advanced active devices for signal modulation.
  • Particle plasmon oscillations offer a route to novel THz device functionalities.

Purpose of the Study:

  • To introduce a new class of active THz devices based on ferromagnetic and dielectric micro-particles.
  • To demonstrate a design paradigm leveraging spin-orbit interaction and particle arrangement.
  • To explore active plasmonic directional routers and cylindrical lenses.

Main Methods:

  • Theoretical exploration using an empirical approach.
  • Finite-difference time-domain (FDTD) calculations for device simulation.
  • Experimental validation of theoretical findings.

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Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation
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Published on: September 27, 2011

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires
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Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Published on: December 11, 2013

Related Experiment Videos

Last Updated: Jun 23, 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

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

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires
09:00

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Published on: December 11, 2013

Main Results:

  • Demonstration of active phase modulation of THz radiation via an external magnetic field.
  • Successful theoretical design of an active plasmonic directional router.
  • Successful theoretical design of an active plasmonic cylindrical lens.
  • Experimental support for the proposed device concepts.

Conclusions:

  • A novel class of active THz devices utilizing particle plasmon oscillations is presented.
  • The interplay of anisotropic magnetoresistance and particle optics enables active THz device control.
  • The demonstrated concepts pave the way for advanced tunable THz components.