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Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Published on: December 11, 2013

Remote sensing by plasmonic transport.

Seung Joon Lee¹, Martin Moskovits

¹Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106-9510, USA.

Journal of the American Chemical Society

|July 4, 2012

Summary

This summary is machine-generated.

This study demonstrates a novel plasmonic sensor using silver nanowire arrays. This sensor enables remote excitation and detection of surface-enhanced Raman scattering (SERS) signals, paving the way for advanced sensing applications.

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Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

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Published on: December 11, 2013

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Optical Trapping of Plasmonic Nanoparticles for In Situ Surface-Enhanced Raman Spectroscopy Characterizations

Optical Trapping of Plasmonic Nanoparticles for In Situ Surface-Enhanced Raman Spectroscopy Characterizations

Published on: June 23, 2022

Area of Science:

Plasmonics
Nanotechnology
Spectroscopy

Background:

Surface-enhanced Raman scattering (SERS) is a powerful technique for molecular detection.
Efficiently exciting and collecting SERS signals remotely remains a challenge.

Purpose of the Study:

To develop a sensor capable of remote SERS excitation and collection.
To investigate the use of silver nanowire arrays for plasmon propagation and SERS enhancement.

Main Methods:

Fabrication of periodically disposed silver nanowire arrays in alumina.
Excitation of plasmons using laser illumination at one end of the nanowire array.
Remote detection of SERS signals generated at the opposite end.

Main Results:

Plasmons were successfully conducted along the silver nanowire arrays.
Remote SERS signals were detected with significant intensity (~5% of direct excitation).
Optimal performance was observed for nanowire arrays with ~11 nm interwire gaps and ~3.3 μm lengths.

Conclusions:

Silver nanowire arrays can act as efficient waveguides for plasmons, enabling remote SERS.
This technology offers a promising platform for developing remote sensing devices.
The sensor design allows for both excitation and collection of SERS signals at opposite ends of the nanowire array.