Melting and superheating of nanowires--a nanotube approach.
We have investigated the size-dependent melting of nanotubes based on a thermodynamic approach and shown that the melting temperature of nanotubes depends on the outer radius and on the inner radius through the thickness of the nanotubes. Size-dependent melting of nanowires and thin films has been derived from that of nanotubes. We validate the size-dependent melting of nanotubes, nanowires and thin films by comparing the results with available molecular dynamic simulations and experimental results. It has also been inferred that superheating occurs when the melting starts from the inner surface and proceeds towards the outer surface, while melting point depression occurs when the melting starts from the outer surface and proceeds towards the inner surface.
Sar
Dillip Kumar
DK
Department of Physics, Reva Institute of Technology and Management, Bangalore 560064, India.
Nanda
Karuna Kar
KK
D003198:Computer Simulation; D003460:Crystallization / Q000379:methods; D005615:Freezing; D008422:Materials Testing; D015233:Models, Statistical; D036103:Nanotechnology / Q000379:methods*; D043942:Nanotubes / Q000737:chemistry; D053770:Nanowires / Q000737:chemistry*; D015203:Reproducibility of Results; D013499:Surface Properties; D013696:Temperature; D013816:Thermodynamics