Can nano-particle stand above the melting temperature of its fixed surface partner?
Mesoscale and Nanoscale Physics
2015-01-09 v1
Abstract
The phonon thermal contribution to the melting temperature of nano-particles is inspected. Unlike in periodic boundary condition, under a general boundary condition the integration volume of low energy phonon for a nano-particle is more complex. We estimate the size-dependent melting temperature through the phase shift of the low energy phonon mode acquired by its scattering on boundary surface. A nano-particle can have either a rising or a decreasing melting temperature due to the boundary condition effect, and we found that an upper melting temperature bound exists for a nano-particle in various environments. Moreover, the melting temperature under a fixed boundary condition sets this upper bound.
Keywords
Cite
@article{arxiv.1501.01735,
title = {Can nano-particle stand above the melting temperature of its fixed surface partner?},
author = {Xu Yuanyuan and Kang Kai and Qin Shaojing},
journal= {arXiv preprint arXiv:1501.01735},
year = {2015}
}