Acoustic Oscillations and Elastic Moduli of Single Gold Nanorods

Peter Zijlstra†, Anna L. Tchebotareva‡, James W. M. Chon*†, Min Gu† and Michel Orrit*‡
Centre for Micro-Photonics, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, P.O. Box 218, Hawthorn, 3122, VIC Australia, and MoNOS Huygens Laboratorium, Universiteit Leiden, 2300 RA Leiden, The Netherlands
Nano Lett., 2008, 8 (10), pp 3493–3497
DOI: 10.1021/nl802480q
Publication Date (Web): September 23, 2008
Copyright © 2008 American Chemical Society
†

Swinburne University of Technology.

,
‡

Universiteit Leiden.

,
* Corresponding authors. E-mail: orrit@molphys.leidenuniv.nl. E-mail: jchon@groupwise.swin.edu.au.

Abstract

Abstract Image

We present the first acoustic vibration measurements of single gold nanorods with well-characterized dimensions and crystal structure. The nanorods have an average size of 90 nm × 30 nm and display two vibration modes, the breathing mode and the extensional mode. Correlation between the dimensions obtained from electron microscope images and the vibrational frequencies of the same particle allows us to determine the elastic moduli for each individual nanorod. Contrary to previous reports on ensembles of gold nanorods, we find that the single particle elastic moduli agree well with bulk values.

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History

  • Published In Issue October 08, 2008
  • Article ASAPSeptember 23, 2008
  • Received: August 13, 2008
    Revised: September 02, 2008

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