Thermal rectification and negative differential thermal conductance in harmonic chains with nonlinear system-bath coupling

Yi, Ming; Li, Huimin; Ding, Zhiyong

doi:10.1103/physreve.93.032127

Cited by 24 publications

(15 citation statements)

References 121 publications

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“…6,7,17,[28][29][30] Thermoelectric energy conversion has been another. 6,31 Nonlinear effects such as heat current rectification [32][33][34][35][36] and negative thermal resistance have been demonstrated, [37][38][39] and possible ways to control heat transport in molecular junctions have been discussed 40,41 . In addition to these advancements in charge transfer reactions across molecular junctions, emergent experimental and theoretical methods examining the possibility to control electron transfer (ET) in specific vibrational modes [42][43][44] have also been developed.…”

Section: Introductionmentioning

confidence: 99%

Electron transfer at thermally heterogeneous molecule-metal interfaces

Craven

Nitzan

2016

The Journal of Chemical Physics

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The rate of electron transfer between a molecular species and a metal, each at a different local temperature, is examined theoretically through implementation of a bithermal (characterized by two temperatures) Marcus formalism. Expressions for the rate constant and the electronic contribution to a heat transfer mechanism which is induced by the temperature gradient between molecule and metal are constructed. The system of coupled dynamical equations describing the electronic and thermal currents are derived and examined over diverse ranges of reaction geometries and temperature gradients. It is shown that electron transfer across the molecule-metal interface is associated with heat transfer and that the electron exchange between metal and molecule makes a distinct contribution to the interfacial heat conduction even when the net electronic current vanishes.

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Section: Introductionmentioning

confidence: 99%

Electron transfer at thermally heterogeneous molecule-metal interfaces

Craven

Nitzan

2016

The Journal of Chemical Physics

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“…This result is also an advance with respect to those previously obtained with the 3D coupled FK and FPU lattice system [18], which presents no rectification whatsoever for temperatures above T 0 = 0.12. Nevertheless, a readily available possibility for increasing the rectification efficiency of the 3D mass-graded lattice, especially in the low-temperature regime, could be to implement the recently proposed nonlinear system-reservoir coupling [26], which has already been shown to increase the rectification efficiency of the 1D mass-graded anharmonic FPU lattice [27].…”

Section: Discussionmentioning

confidence: 99%

Thermal rectification in three-dimensional mass-graded anharmonic oscillator lattices

Romero-Bastida,

Lindero-Hernández

2021

Preprint

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In this work we study the thermal rectification efficiency, i.e., asymmetric heat flow, of a threedimensional mass-graded anharmonic lattice of length N and width W by means of nonequilibrium molecular dynamics simulations. The obtained rectification, which is of the same order of magnitude as that of the corresponding one-dimensional lattice, saturates at low values of the aspect ratio W/N , consistent with the already known behavior of the corresponding heat fluxes of the homogeneous system under analogous conditions. The maximum rectification is obtained in the temperature range wherein no rectification could be obtained in other one-dimensional systems, as well as in the corresponding one-dimensional instance of the model studied herein.

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“…Later, a thermal transistor and a thermal logic gate based on it [27,28], a thermal memory [29], and thermal shuttling [30] are also realized in nonlinear lattices, which can provide powerful tools to manipulate heat transfer and the possibility to do phonon computing like electronic computers [12]. In addition, it's found that thermal rectification can exist in linear lattices with nonlinear system-bath coupling [31], and complex networks with anharmonic interactions [32,33] as well. In experiments, Chang et al [34] fabricated a thermal diode based on the solitonic transport behavior of phonons in carbon nanotubes or boron nitride nanotubes with mass gradient, and the rectification ratio can reach 7%.…”

Section: Introductionmentioning

confidence: 99%

Designing nonlinear thermal devices and metamaterials under the Fourier law: A route to nonlinear thermotics

Dai

2021

Front. Phys.

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Nonlinear heat transfer can be exploited to reveal novel transport phenomena and thus enhance people's ability to manipulate heat flux at will. However, there hasn't been a mature discipline called nonlinear thermotics like its counterpart in optics or acoustics to make a systematic summary of relevant researches. In the current review, we focus on recent progress in an important part of nonlinear heat transfer, i.e., tailoring nonlinear thermal devices and metamaterials under the Fourier's law, especially with temperature-dependent thermal conductivities. We will present the basic designing techniques including solving the equation directly and the transformation theory. Tuning nonlinearity coming from multi-physical effects, and how to calculate effective properties of nonlinear conductive composites using the effective medium theory are also included. Based on these theories, researchers have successfully designed various functional materials and devices such as the thermal diodes, thermal transistors, thermal memory elements, energy-free thermostats, and intelligent thermal materials, and some of them have also been realized in experiments. Further, these phenomenological works can provide a feasible route for the development of nonlinear thermotics.

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Thermal rectification and negative differential thermal conductance in harmonic chains with nonlinear system-bath coupling

Cited by 24 publications

References 121 publications

Electron transfer at thermally heterogeneous molecule-metal interfaces

Electron transfer at thermally heterogeneous molecule-metal interfaces

Thermal rectification in three-dimensional mass-graded anharmonic oscillator lattices

Designing nonlinear thermal devices and metamaterials under the Fourier law: A route to nonlinear thermotics

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