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Related Experiment Video

Updated: Jul 8, 2026

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Published on: December 11, 2013

Localized surface plasmon energy dissipation in bimetallic core-shell nanostructures.

Lixia Sang¹, Zhiyong Ren¹, Yue Zhao¹

¹MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing Key Laboratory of Heat Transfer and Energy Conversion, Beijing University of Technology, Beijing 100124, China.

The Journal of Chemical Physics

|July 15, 2024

Summary

This summary is machine-generated.

Understanding plasmon energy dissipation in bimetallic nanostructures is key for plasmonic applications. Energy preferentially dissipates in the shell, influenced by the shell

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Area of Science:

Nanotechnology
Materials Science
Physical Chemistry

Background:

Plasmon energy dissipation in bimetallic nanostructures is crucial for advanced plasmonic applications.
Controlling energy transfer pathways in core-shell nanostructures requires understanding their optical and electronic properties.

Purpose of the Study:

To investigate the plasmon energy dissipation mechanism in silver-copper (Ag@Cu), silver-platinum (Ag@Pt), and silver-cobalt (Ag@Co) core-shell nanostructures.
To elucidate the role of shell material properties and core-shell interfaces in dictating energy dissipation pathways.
To establish fundamental physical principles for designing efficient plasmonic nanostructures.

Main Methods:

Finite element method (FEM) calculations for absorption, scattering, and extinction spectra.
Visualization of energy dissipation using particle trajectory and absorbed power density distribution.
Analysis of core-shell nanostructure properties including absorption/scattering ratio, shell absorptivity, time-domain electric field, and electron arrangements.

Main Results:

Plasmon energy preferentially dissipates within the shell of non-plasmonic metal coated on plasmonic metal core nanostructures.
The extent of energy dissipation is dependent on the imaginary part of the dielectric constants of both the shell and core materials.
A higher dielectric constant in the shell material enhances energy transfer from the plasmonic core to the shell.

Conclusions:

The study provides a fundamental physical framework for understanding plasmon energy dissipation in bimetallic nanostructures.
Design principles for optimizing energy transfer and dissipation in plasmonic nanostructures are established.
This research facilitates the development of tailored nanostructures for specific plasmonic applications.