Structural and thermal stabilities of Au@Ag core-shell nanoparticles and their arrays: A molecular dynamics simulation

Jia Hai-Hong^{1, 2}, Bao De-Liang^{1, 2}, Zhang Yu-Yang^{1, 2}, Du Shi-Xuan^{1, 2, †}

Snapshots of cross section of Ag NP, Au@Ag CSNP and Au NP arrays at different temperatures during heating process. (a) Ag 7 NP array, (b) Au 2 @Ag 5 CSNP array, (c) Au 7 NP array. The upper panels are top views, the lower panels are cross sections. Surface Ag, inner Ag, surface Au and inner Au atoms are marked by red, silver, green and orange, respectively.