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Updated: Jun 19, 2026

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Published on: December 11, 2013

Refractometric sensing using propagating versus localized surface plasmons: a direct comparison.

Mikael Svedendahl¹, Si Chen, Alexandre Dmitriev

¹Department of Applied Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden.

|October 22, 2009

Summary

This summary is machine-generated.

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Localized surface plasmon resonances (LSPRs) and propagating surface plasmon resonances (SPRs) show similar biosensing performance. LSPR sensing offers a competitive alternative to traditional SPR sensors for refractive index detection.

Area of Science:

Nanophotonics
Plasmonics
Biosensing

Background:

Localized surface plasmon resonances (LSPRs) in metallic nanostructures and propagating surface plasmon resonances (SPRs) on thin films are optical phenomena utilized in refractive index sensing.
Both LSPR and SPR sensors offer label-free detection capabilities crucial for various biochemical assays.

Purpose of the Study:

To directly compare the refractive index sensing performance of LSPR in gold nanodisks with SPR on gold films.
To evaluate the competitive potential of LSPR sensing against established SPR techniques under identical experimental conditions.

Main Methods:

Experimental setup utilizing gold nanodisks and 50 nm gold films for LSPR and SPR generation, respectively.
Maintaining identical experimental conditions and a resonance wavelength of approximately 700 nm for both platforms.

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Last Updated: Jun 19, 2026

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

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Published on: December 11, 2013

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

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

Published on: July 21, 2018

Conducting biosensing experiments employing the biotin-avidin coupling reaction to assess sensor performance.

Main Results:

Both LSPR and SPR sensing platforms exhibited very similar performance in biosensing experiments.
The propagating surface plasmon resonance (SPR) sensor demonstrated a superior figure of merit for bulk refractive index sensing.
Localized surface plasmon resonance (LSPR) sensing, utilizing simple transmission or reflection measurements, proved to be a highly competitive technique.

Conclusions:

LSPR sensing is a viable and competitive alternative to traditional SPR sensors for refractive index sensing applications.
The choice between LSPR and SPR may depend on specific application requirements, balancing bulk sensitivity with measurement simplicity.
This comparative study validates the potential of nanoplasmonic structures for advanced biosensing platforms.