Effect of substrates on the melting temperature of gold nanoparticles

Joonho Lee, Toshihiro Tanaka, Junggoo Lee, Hirotaro Mori

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

The size-dependent melting temperature of metallic nanoparticles (NPs) is generally examined on a solid substrate. However, most experimental works performed on a solid substrate were explained by a homogeneous particle model without considering the effect of the substrate. For example, in the previous studies, the melting temperatures of gold NPs were examined on carbon or tungsten substrates. However, the experimental results were described only by the surface tension of gold, without interfacial tension between gold and substrate. In the present work, the effect of the sorts of substrate on the melting temperatures of gold NPs was examined by using a thermodynamic model equilibrating the chemical potentials of liquid and solid particles. For this study, graphite, alumina and tungsten substrates were selected as typical ceramic and metallic substrates.

Original languageEnglish
Pages (from-to)105-111
Number of pages7
JournalCalphad: Computer Coupling of Phase Diagrams and Thermochemistry
Volume31
Issue number1
DOIs
Publication statusPublished - 2007 Mar 1

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Gold
Melting point
Nanoparticles
Substrates
Tungsten
Surface tension
Graphite
Aluminum Oxide
Chemical potential
Alumina
Carbon
Thermodynamics
Liquids

Keywords

  • Interfacial tension
  • Melting temperature
  • Nanoparticles
  • Substrate

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Effect of substrates on the melting temperature of gold nanoparticles. / Lee, Joonho; Tanaka, Toshihiro; Lee, Junggoo; Mori, Hirotaro.

In: Calphad: Computer Coupling of Phase Diagrams and Thermochemistry, Vol. 31, No. 1, 01.03.2007, p. 105-111.

Research output: Contribution to journalArticle

Lee, Joonho ; Tanaka, Toshihiro ; Lee, Junggoo ; Mori, Hirotaro. / Effect of substrates on the melting temperature of gold nanoparticles. In: Calphad: Computer Coupling of Phase Diagrams and Thermochemistry. 2007 ; Vol. 31, No. 1. pp. 105-111.
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