Figure 6
Potential energy as a function of temperature.
The black circles indicate the potential energy for the pure Cu nanoparticle and the red ones that of the Cu nanoparticle covered by C. The melting points in each case are marked by dashed circles: 1012 K for the pure Cu nanoparticle and 1052 K for the Cu nanoparticle covered by C. The Cu nanoparticle with C exhibits a higher melting point than the pure Cu nanoparticle, implying that the covered C plays a relevant role in affecting the melting temperature of the nanoparticle.
