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

O.I. Savina1
1Russian state trade and economic university, Moscow 125445, Smol'naja str., 36
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.
Accepted: 24 April 2014
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