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Updated: Jan 23, 2026

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Published on: December 11, 2013

Plasmonics in Atomically Thin Crystalline Silver Films.

Zakaria M Abd El-Fattah^1,2, Vahagn Mkhitaryan¹, Jens Brede³

¹ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology , 08860 Castelldefels, Barcelona , Spain.

|June 13, 2019

Summary

This summary is machine-generated.

Researchers developed sharp near-infrared plasmons in atomically thin silver films. These findings enable new possibilities for nanoscale optical field manipulation and advanced optical sensing technologies.

Keywords:

2D materials 2D plasmonics atomically thin silver crystalline metal films ultrathin plasmonics

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Area of Science:

Condensed Matter Physics
Nanophotonics
Materials Science

Background:

Light-matter interactions at the atomic scale are crucial for phenomena like photoemission and lasing.
Plasmons, collective electron oscillations, enable optical field manipulation at the nanoscale.
Two-dimensional crystals offer tunable plasmons but often suffer from broadness or low frequencies.

Purpose of the Study:

To demonstrate sharp near-infrared plasmons in wafer-scale, atomically thin silver crystalline films.
To overcome limitations of plasmon broadness and low frequencies in existing 2D materials.
To explore potential applications in electro-optical modulation and optical sensing.

Main Methods:

Lithographic patterning of wafer-scale atomically thin silver crystalline films.
Fabrication of silver films down to seven Ag(111) monolayers.
Optical spectroscopy to characterize plasmon properties.
Sheet resistance measurements to assess conductivity.

Main Results:

Demonstrated spectrally narrow plasmons with a quality factor of approximately 4 in the near-infrared regime.
Achieved low sheet resistance comparable to bulk silver in few-atomic-layer films.
Confirmed good crystal quality and plasmon narrowness even with a passivating dielectric layer.

Conclusions:

Atomically thin silver films exhibit sharp, confined near-infrared plasmons.
These plasmons are resilient to ambient conditions due to passivation.
The findings present significant potential for advanced optical modulation and sensing applications.