Open AccessShape changes and melting characteristics of cubic Pt nanoparticle：A molecular dynamics study
Author(s) -
Tian Hui-Chen,
Liu Li,
Wen Yu-Hua
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.4080
Subject(s) - materials science , molecular dynamics , nanoparticle , radius , cubic crystal system , melting point , cube (algebra) , melting temperature , chemical physics , thermal , condensed matter physics , nanotechnology , thermodynamics , physics , geometry , composite material , computational chemistry , chemistry , computer security , mathematics , computer science
Molecular dynamics simulation is used to study the thermal stability of cubic platinum nanoparticle. The simulated results show that the cubic nanoparticle first transforms into the truncated cube enclosed by {111} and {100} facets, and then transforms to the spherical one. Finally, it melts into liquid state. The critical temperature of shape transformation is about 1250 K according to the calculation of statistical radius. Cubic and spherical nanoparticles have the same melting point in spite of their different shapes.