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Related Experiment Video

Updated: May 8, 2026

Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles

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Published on: March 2, 2016

Substrate-mediated charge transfer plasmons in simple and complex nanoparticle clusters.

Yumin Wang¹, Ziwei Li, Ke Zhao

¹Department of Electrical and Computer Engineering, Department of Physics and Astronomy, Laboratory for Nanophotonics, Rice Quantum Institute, Rice University, 6100 Main Street, Houston, Texas 77005, USA.

|August 28, 2013

Summary

This summary is machine-generated.

A conductive substrate induces unique charge-transfer plasmon modes in gold nanoparticle clusters. These modes differ significantly from traditional plasmon modes, offering new possibilities for nanoscale optical applications.

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Published on: August 18, 2020

Area of Science:

Plasmonics
Nanotechnology
Surface Science

Background:

Gold nanoparticle clusters exhibit plasmonic properties.
Controlling plasmon modes is crucial for optical applications.

Purpose of the Study:

Investigate charge-transfer plasmon modes in gold nanoparticle clusters on conductive substrates.
Characterize the plasmonic behavior of dimer and nonamer clusters.

Main Methods:

Fabrication of gold nanoparticle clusters (dimer and nonamer).
Use of conductive and insulating substrates for comparison.
Optical spectroscopy to observe plasmon modes.

Main Results:

A narrow charge-transfer plasmon mode was observed in dimer clusters on a conductive substrate, distinct from dipolar modes.
Nonamer clusters on insulating substrates showed Fano resonance.
A mixed charge transfer-dipole mode was observed in nonamer clusters on conductive substrates, leading to damped far-field response.

Conclusions:

Conductive substrates effectively induce charge-transfer plasmon modes in gold nanoparticle clusters.
The geometry of nanoparticle clusters influences the resulting plasmon modes.
Charge-transfer plasmons offer unique optical properties with potential for novel devices.