TY - JOUR
T1 - Effect of substrates on the melting temperature of gold nanoparticles
AU - Lee, Joonho
AU - Tanaka, Toshihiro
AU - Lee, Junggoo
AU - Mori, Hirotaro
N1 - Funding Information:
This work was supported by a Korea Research Foundation Grant funded by the Korean Government (MOEHRD) (KRF 2005-041-D00410). The authors would like thank the anonymous reviewers for their helpful discussion.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2007/3
Y1 - 2007/3
N2 - 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.
AB - 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.
KW - Interfacial tension
KW - Melting temperature
KW - Nanoparticles
KW - Substrate
UR - http://www.scopus.com/inward/record.url?scp=33846305066&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33846305066&partnerID=8YFLogxK
U2 - 10.1016/j.calphad.2006.10.001
DO - 10.1016/j.calphad.2006.10.001
M3 - Article
AN - SCOPUS:33846305066
SN - 0364-5916
VL - 31
SP - 105
EP - 111
JO - Calphad: Computer Coupling of Phase Diagrams and Thermochemistry
JF - Calphad: Computer Coupling of Phase Diagrams and Thermochemistry
IS - 1
ER -