Surface morphology and step fluctuations on Ag nanowires

C. G. Tao, W. G. Cullen, E. D. Williams, S. E. Hunyadi, C. J. Murphy

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Silver nanowires fabricated using a wet-chemical synthesis have been characterized in UHV using scanning tunneling microscopy. The nanowires have a faceted structure with a high density of steps at the facet boundaries. Monolayer height steps are easily imaged, and have measurable temporal fluctuations at room temperature. Measurement of the step time correlation functions shows that the steps fluctuate via periphery diffusion, with a hopping time constant of 0.10-0.24 s. The symmetry of islands on the facets and the quantitative step characteristics are both consistent with (1 0 0) oriented facets, in agreement with previous TEM characterization.

Original languageEnglish (US)
Pages (from-to)4939-4943
Number of pages5
JournalSurface Science
Volume601
Issue number21
DOIs
StatePublished - Nov 1 2007

Fingerprint

Nanowires
Surface morphology
nanowires
Scanning tunneling microscopy
flat surfaces
Silver
Monolayers
Transmission electron microscopy
time constant
scanning tunneling microscopy
Temperature
silver
transmission electron microscopy
symmetry
room temperature
synthesis

Keywords

  • Adatom
  • Equilibrium thermodynamics and statistical mechanics
  • Nanostructures
  • Scanning tunneling microscopy
  • Steps
  • Surface diffusion
  • Surface structure, morphology, roughness and topography

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Tao, C. G., Cullen, W. G., Williams, E. D., Hunyadi, S. E., & Murphy, C. J. (2007). Surface morphology and step fluctuations on Ag nanowires. Surface Science, 601(21), 4939-4943. https://doi.org/10.1016/j.susc.2007.08.023

Surface morphology and step fluctuations on Ag nanowires. / Tao, C. G.; Cullen, W. G.; Williams, E. D.; Hunyadi, S. E.; Murphy, C. J.

In: Surface Science, Vol. 601, No. 21, 01.11.2007, p. 4939-4943.

Research output: Contribution to journalArticle

Tao, CG, Cullen, WG, Williams, ED, Hunyadi, SE & Murphy, CJ 2007, 'Surface morphology and step fluctuations on Ag nanowires', Surface Science, vol. 601, no. 21, pp. 4939-4943. https://doi.org/10.1016/j.susc.2007.08.023
Tao CG, Cullen WG, Williams ED, Hunyadi SE, Murphy CJ. Surface morphology and step fluctuations on Ag nanowires. Surface Science. 2007 Nov 1;601(21):4939-4943. https://doi.org/10.1016/j.susc.2007.08.023
Tao, C. G. ; Cullen, W. G. ; Williams, E. D. ; Hunyadi, S. E. ; Murphy, C. J. / Surface morphology and step fluctuations on Ag nanowires. In: Surface Science. 2007 ; Vol. 601, No. 21. pp. 4939-4943.
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