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Related Concept Videos

Photoluminescence: Applications01:14

Photoluminescence: Applications

Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
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Photoluminescence: Fluorescence and Phosphorescence

Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
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Related Experiment Video

Updated: Jun 14, 2026

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

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Published on: December 11, 2013

Plasmonics in buried structures.

I Romero1, F J García de Abajo

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

Optics Express
|April 8, 2010
PubMed
Summary

We demonstrate tunable plasmon propagation in gold-buried nanovoids. This novel metal-buried structure offers long propagation distances and minimal optical losses for advanced plasmonics.

Area of Science:

  • Physics
  • Materials Science
  • Nanotechnology

Background:

  • Plasmonics enables light manipulation at the nanoscale.
  • Metal-buried nanostructures offer unique optical properties.
  • Controlling plasmon propagation is key for integrated photonic circuits.

Purpose of the Study:

  • To investigate plasmon propagation in silica-filled coupled nanovoids within gold.
  • To explore tunability of propagation bands and band gaps.
  • To analyze the impact of disorder and fabrication imperfections.

Main Methods:

  • Numerical simulations of plasmon propagation.
  • Analysis of plasmon hybridization and void overlap.
  • Investigation of disorder effects on propagation characteristics.

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Related Experiment Videos

Last Updated: Jun 14, 2026

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

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Published on: December 11, 2013

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
07:39

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

Published on: July 21, 2018

A Thermoplasmonic Approach for Investigating Plasma Membrane Repair in Living Cells and Model Membranes
06:32

A Thermoplasmonic Approach for Investigating Plasma Membrane Repair in Living Cells and Model Membranes

Published on: January 19, 2024

Main Results:

  • Tunable propagation bands and band gaps achieved by controlling void overlap and plasmon hybridization.
  • Demonstrated robustness against disorder and fabrication imperfections.
  • Identified potential for long propagation distances and reduced radiative losses.

Conclusions:

  • Silica-filled coupled nanovoids in gold present a novel platform for plasmonics.
  • This metal-buried structure enables enhanced optical integration and performance.
  • The findings pave the way for 3D plasmonic circuits with minimized crosstalk and losses.