Title :
Molecular dynamic simulation of nanoparticle size effect on melting point of gold
Author :
Nayebi, P. ; Shamshirsaz, M. ; Mirabbaszadeh, K. ; Zaminpeyma, E. ; Asgari, M.B.
Author_Institution :
Phys. Dept., Amirkabir Univ. of Technol. (Tehran Polytech.), Tehran, Iran
Abstract :
Molecular dynamics simulation of the crystallization behavior of liquid gold (Au) nanoparticles, with 1, 2, 3, 4, 5 and 6 nm in diameter, on cooling has been carried out based on the embedded-atom-method potential. It is demonstrated that the structure of the fully crystallized particle is polycrystalline face-centered cubic (FCC). The FCC structure of the gold nanoparticle is proved energetically the most stable form. The final structure of nanoparticles are affected by cooling time and size of nanoparticles. Increasing the size of nanoparticles, the melting point of nanoparticles will be increased.
Keywords :
cooling; crystallisation; gold; liquid metals; liquid structure; melting point; molecular dynamics method; nanoparticles; particle size; Au; cooling; crystallization; embedded-atom-method potential; liquid nanoparticles; liquid structure; melting point; molecular dynamic simulation; nanoparticle size; size 1 nm to 6 nm; Cooling; Crystallization; FCC; Gold; Nanoparticles; Surface morphology; Crystallization; Gold nanoparticle; Melting point; Molecular Dynamic simulation;
Conference_Titel :
Design, Test, Integration and Packaging of MEMS/MOEMS (DTIP), 2011 Symposium on
Conference_Location :
Aix-en-Provence
Print_ISBN :
978-1-61284-905-8