  We have investigated the melting behavior of ultra-thin copper nanowires
using classical molecular dynamics simulations. The caloric curves of
cylindrical multi-shell copper nanowires showed an insight into the specific
phase transition. The melting temperature of copper nanowires is linearly
proportional with the number of atoms per layer. When nanowires have almost the
same number of atoms per layer regardless of the initial structures, the
melting temperatures of nanowires are much the same.
