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|Title:||Mechanisms causing thermal rectification: The influence of phonon frequency, asymmetry, and nonlinear interactions|
|Source:||Zeng, N., Wang, J.-S. (2008-07-30). Mechanisms causing thermal rectification: The influence of phonon frequency, asymmetry, and nonlinear interactions. Physical Review B - Condensed Matter and Materials Physics 78 (2) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevB.78.024305|
|Abstract:||We have determined the mechanisms leading to thermal rectification by applying the nonequilibrium Green's function method to study thermal transport through a one-dimensional asymmetric lattice. Thermal rectification occurs in the presence of nonlinear interactions and a nonuniform phonon frequency distribution. We show that thermal rectification results from the contribution of high-frequency phonons; a thermal rectifier can thus be realized by filtering out high-frequency phonons in a single direction. Using these results, we present methods of increasing the level of rectification, and also discuss possible limitations on thermal rectifier performance. © 2008 The American Physical Society.|
|Source Title:||Physical Review B - Condensed Matter and Materials Physics|
|Appears in Collections:||Staff Publications|
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