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Related Experiment Video

Updated: May 13, 2026

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

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Published on: December 11, 2013

Highly tunable propagating surface plasmons on supported silver nanowires.

Hong Wei1, Shunping Zhang, Xiaorui Tian

  • 1Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.

Proceedings of the National Academy of Sciences of the United States of America
|March 15, 2013
PubMed
Summary

Surface plasmons on silver nanowires exhibit extreme tunability. This sensitivity is key for optical signal control in plasmonic circuits and developing ultrasensitive on-chip biosensors.

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Area of Science:

  • Physics
  • Materials Science
  • Nanotechnology

Background:

  • Surface plasmons are collective electron oscillations at metal surfaces, tunable via dielectric environment.
  • Tuning is well-established for nanoparticles and surfaces, but less understood for one-dimensional nanowires.

Purpose of the Study:

  • To investigate the tunability of surface plasmons on one-dimensional silver (Ag) nanowires.
  • To quantify the sensitivity of plasmonic properties to changes in the surrounding dielectric material.

Main Methods:

  • Experimental investigation of surface plasmon behavior on Ag nanowires.
  • Characterization of near-field distribution patterns under varying dielectric conditions (Al2O3 coating and surrounding medium refractive index).

Main Results:

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Last Updated: May 13, 2026

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

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Published on: December 11, 2013

Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics
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15:06

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Published on: January 3, 2016

  • Demonstrated extremely large tunability of surface plasmons on Ag nanowires.
  • Observed a beat period increase of 90 nm per nanometer of Al2O3 coating.
  • Measured a beat period increase of 16 µm per refractive index unit change in the surrounding medium.

Conclusions:

  • The high sensitivity of surface plasmons on Ag nanowires is crucial for optical signal routing and demultiplexing in plasmonic circuits.
  • This finding opens possibilities for developing on-chip ultrasensitive biosensors.