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Related Experiment Video

Updated: May 21, 2026

Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles
08:19

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

Published on: March 2, 2016

Exciton-plasmon interactions in quantum dot-gold nanoparticle structures.

Eyal Cohen-Hoshen1, Garnett W Bryant, Iddo Pinkas

  • 1Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot 76100, Israel. Eyal.Cohen-Hoshen@weizmann.ac.il

Nano Letters
|June 29, 2012
PubMed
Summary

We developed a self-assembly method for creating cadmium selenide/zinc sulfide (CdSe/ZnS) quantum dot-gold nanoparticle complexes. These complexes enable detailed studies of exciton-plasmon interactions and their effects on light absorption and decay rates.

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Area of Science:

  • Nanotechnology
  • Materials Science
  • Physical Chemistry

Background:

  • Quantum dots (QDs) and gold nanoparticles (AuNPs) are crucial in nanoscience.
  • Understanding exciton-plasmon interactions is key for advanced optical applications.
  • Controlled assembly of hybrid nanostructures is challenging.

Purpose of the Study:

  • To present a self-assembly method for constructing CdSe/ZnS quantum dot-gold nanoparticle complexes.
  • To enable detailed investigation of exciton-plasmon interactions within these hybrid structures.
  • To quantify the contributions of near-field enhancement and exciton coupling to plasmon modes.

Main Methods:

  • Utilized a self-assembly approach for complex formation.
  • Synthesized CdSe/ZnS core-shell quantum dots and gold nanoparticles.

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Last Updated: May 21, 2026

Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles
08:19

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

Published on: March 2, 2016

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation
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Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation

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Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
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  • Characterized the composition and structure of the resulting complexes.
  • Investigated exciton-plasmon interactions through optical measurements.

    • Main Results:

    • Achieved controlled formation of CdSe/ZnS QD-AuNP complexes.
    • Determined significant polarization-dependent near-field enhancement, boosting absorption by nearly two orders of magnitude.
    • Quantified exciton coupling to plasmon modes, leading to modifications in exciton decay rates.

    Conclusions:

    • The self-assembly method provides good control over QD-AuNP complex composition and structure.
    • Exciton-plasmon interactions significantly influence optical properties, enhancing absorption and altering decay dynamics.
    • These findings are valuable for designing advanced optoelectronic and photonic devices.