A study on the plasmonic properties of silver core gold shell nanoparticles: Optical assessment of the particle structure

Derrick Mott, Jae Dong Lee, Nguyen Thi Bich Thuy, Yoshiya Aoki, Prerna Singh, Shinya Maenosono

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

This paper reports a qualitative comparison between the optical properties of a set of silver core, gold shell nanoparticles with varying composition and structure to those calculated using the Mie solution. To achieve this, silver nanoparticles were synthesized in aqueous phase from a silver hydroxide precursor with sodium acrylate as dual reducing-capping agent. The particles were then coated with a layer of gold with controllable thickness through a reduction-deposition process. The resulting nanoparticles reveal well defined optical properties that make them suitable for comparison to ideal calculated results using the Mie solution. The discussion focuses on the correlation between the synthesized core shell nanoparticles with varying Au shell thickness and the Mie solution results in terms of the optical properties. The results give insight in how to design and synthesize silver core, gold shell nanoparticles with controllable optical properties (e.g., SPR band in terms of intensity and position), and has implications in creating nanoparticle materials to be used as biological probes and sensing elements.

Original languageEnglish
Article number065004
JournalJapanese journal of applied physics
Volume50
Issue number6 PART 1
DOIs
Publication statusPublished - 2011 Jun 1
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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