Heat conductivity reduction in case of the non-uniform extension of the lattice

Accepted: 24 April 2014
This paper is written in Russian
Citation: O.I. Savina. Heat conductivity reduction in case of the non-uniform extension of the lattice. Letters on Materials, 2014, 4(1) 68-71
BibTex   DOI: 10.22226/2410-3535-2014-1-68-71

Abstract

Heat conductivity in the chain with non-convex potential of nearest-neighbor interaction has been numerically investigated. Stretched chain separates into two parts: the weakly and strongly stretched monomers. It has been shown that the heat conductivity decreases sharply provided the non-uniform stretching of the chain. Such a reduction must be expected in all molecular structures (e.g. in alpha-helix polypeptide molecules, double-helix DNA, intermetallic crystals), which stretching occurs in the non-uniform scenario.

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