Solidification of gold nanoparticles in carbon nanotubes

The structure and the solidification of gold nanoparticles in a carbon nanotube are investigated using molecular dynamics simulations. The simulations indicate that the predicted solidification temperature of the enclosed particle is lower than its bulk counterpart, but higher than that observed for clusters placed in vacuum. A comparison with a phenomenological model indicates that, in the considered range of tube radii (R-CNT) of 0.5 < R-CNT < 1.6 nm, the solidification temperature depends mainly on the length of the particle with a minor dependence on R-CNT.