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      Asymmetric Properties of Heat Conduction in a One-Dimensional Frenkel-Kontorova Model

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          Abstract

          In this Letter, we show numerically that the rectifying effect of heat flux in a one-dimensional two-segment Frenkel-Kontorova chain demonstrated in recent literature is merely available under the limit of the weak coupling between the two constituent segments. Surprisingly, the rectifying effect will be reversed when the properties of the interface and the system size change. The two types of asymmetric heat conduction are dominated by different mechanisms, which are all induced by the nonlinearity. We further discuss the possibility of the experimental realization of thermal diode or rectifier devices.

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          Thermal boundary resistance

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            Controlling the energy flow in nonlinear lattices: a model for a thermal rectifier

            We address the problem of heat conduction in 1-D nonlinear chains; we show that, acting on the parameter which controls the strength of the on site potential inside a segment of the chain, we induce a transition from conducting to insulating behavior in the whole system. Quite remarkably, the same transition can be observed by increasing the temperatures of the thermal baths at both ends of the chain by the same amount. The control of heat conduction by nonlinearity opens the possibility to propose new devices such as a thermal rectifier.
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              Entropy-driven DNA denaturation

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                Author and article information

                Journal
                09 November 2005
                Article
                10.1103/PhysRevLett.97.124302
                cond-mat/0511229
                2c84caea-340a-4d87-9bd1-eddc7c449732
                Custom metadata
                Phy. Rev. Lett. 97, 124302 (2006)
                4 Pages, 4 figures
                cond-mat.stat-mech

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