Prev. Article Next Article Table of Contents

Article

Breathing Mode Dynamics and Elastic Properties of Gold Nanoparticles

Figures
Citing Articles

Your current credentials do not allow retrieval of the full text.

Purchase the full-text

PDF/HTML,
figures/images,
references and tables,
(where available)

Charles F. Vardeman II, Patrick F. Conforti, Megan M. Sprague, and J. Daniel Gezelter*

Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556

J. Phys. Chem. B, 2005, 109 (35), pp 16695–16699

DOI: 10.1021/jp051575r

Publication Date (Web): August 12, 2005

Section:

Nonferrous Metals and Alloys

Abstract

We present calculations of the bulk modulus, heat capacity, and the period of the breathing mode for spherical nanoparticles following excitation by ultrafast laser pulses. The bulk modulus and heat capacities both exhibit clear transitions upon bulk melting of the particles. Equilibrium calculations of the heat capacity show that the melting transition is sharper and occurs at a lower temperature than one would observe from an ultrafast experiment. We also observe an intriguing splitting in the low-frequency spectra of the nanoparticles and analyze this splitting in terms of Lamb's classical theory of elastic spheres. We conclude that the particles either (1) melt during the observation period following laser excitation or (2) melt an outer shell while maintaining a crystalline core. Both mechanisms for melting are commensurate with our observations.

View: Full Text HTML | Hi-Res PDF | PDF w/ Links

Citing Articles

View all 7 citing articles

Citation data is made available by participants in CrossRef's Cited-by Linking service. For a more comprehensive list of citations to this article, users are encouraged to perform a search in SciFinder.

This article has been cited by 3 ACS Journal articles (3 most recent appear below).

Optical Studies of Dynamics in Noble Metal Nanostructures
Gregory V. Hartland
Chemical Reviews2011 111 (6), 3858-3887
- Optical Studies of Dynamics in Noble Metal Nanostructures
  Gregory V. Hartland
  Chemical Reviews2011 111 (6), 3858-3887
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
Coherent Acoustic Oscillations of Nanorods Composed of Various Metals
J. C. Owrutsky, M. B. Pomfret and D. J. Brown
The Journal of Physical Chemistry C2009 113 (25), 10947-10955
- Coherent Acoustic Oscillations of Nanorods Composed of Various Metals
  J. C. Owrutsky, M. B. Pomfret and D. J. Brown
  The Journal of Physical Chemistry C2009 113 (25), 10947-10955
  Ultrafast transient absorption spectroscopy has been used to characterize coherent acoustic oscillations for a series of nanorods composed of a variety of metals. The nanorods are produced by electrochemical synthesis in polycarbonate templates with ...
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
Simulations of Laser-Induced Glass Formation in Ag−Cu Nanoparticles
Charles F. Vardeman II and J. Daniel Gezelter
The Journal of Physical Chemistry C2008 112 (9), 3283-3293
- Simulations of Laser-Induced Glass Formation in Ag−Cu Nanoparticles
  Charles F. Vardeman II and J. Daniel Gezelter
  The Journal of Physical Chemistry C2008 112 (9), 3283-3293
  Using molecular dynamics simulations, we have simulated the rapid cooling experienced by bimetallic nanoparticles following laser excitation at the plasmon resonance and find evidence that glassy beads, specifically AgCu bimetallic particles at the ...
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links