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The macroscopic control of ubiquitous heat flow remains poorly explored due to the lack of a fundamental theoretical method. Here, by establishing temperature-dependent transformation thermotics for treating materials whose conductivity…

Materials Science · Physics 2015-11-09 Ying Li , Xiangying Shen , Zuhui Wu , Junying Huang , Yixuan Chen , Yushan Ni , Jiping Huang

Thermal rectification and heat amplification are investigated in a nonequilibrium V-type three-level system with quantum interference. By applying the Redfield master equation combined with full counting statistics, we analyze the steady…

Quantum Physics · Physics 2019-04-10 Chen Wang , Dazhi Xu , Huan Liu , Xianlong Gao

We report the realization of an ultra-efficient low-temperature hybrid heat current rectifier, thermal counterpart of the well-known electric diode. Our design is based on a tunnel junction between two different elements: a normal metal and…

Mesoscale and Nanoscale Physics · Physics 2015-04-13 M. J. Martínez-Pérez , A. Fornieri , F. Giazotto

Geometric diodes, which take advantage of geometric asymmetry to achieve current flow preference, are promising for THz current rectification. Previous studies relate geometric diodes' rectification to quantum coherent or ballistic…

Applied Physics · Physics 2021-01-26 Mengmeng Bai , Yanqing Zhao , Shuting Xu , Yao Guo

We consider a system consisting of two interacting classical particles, each one subject to an on-site potential and to a Langevin thermal bath. We analytically calculate the heat current that can be established through the system when the…

Statistical Mechanics · Physics 2021-07-14 Lucianno Defaveri , Celia Anteneodo

One long-standing and crucial issues in the study of quasicrystals has been to identify the physical properties characteristic of quasicrystals. The large positive temperature coefficient of thermal conductivity at temperatures above room…

Materials Science · Physics 2024-09-13 Takashi Kurono , Jinjia Zhang , Yasushi Kamimura , Keiichi Edagawa

This note supplements a Reply [1] to a Comment [2] which identified a fundamental symmetry error we made in the original experimental study of a photon thermal diode [3]. For thermal specialists, here we provide some additional details…

Optics · Physics 2017-06-01 Chris Dames , Zhen Chen

We study thermal properties of one dimensional(1D) harmonic and anharmonic lattices with mass gradient. It is found that the temperature gradient can be built up in the 1D harmonic lattice with mass gradient due to the existence of gradons.…

Disordered Systems and Neural Networks · Physics 2009-11-13 Nuo Yang , Nianbei Li , Lei Wang , Baowen Li

Varying temperatures influence the figure errors of freeform metal mirrors by thermal expansion. Furthermore, different materials lead to thermo-elastic bending effects. The article presents a derivation of a compensation approach for…

Applied Physics · Physics 2018-06-06 Johannes Hartung , Henrik von Lukowicz , Jan Kinast

Controlling thermal transport at the nanoscale is vital for many applications. Previously, it has been shown that this control can be achieved with periodically nanostructured two-dimensional phononic crystals, for the case of suspended…

Mesoscale and Nanoscale Physics · Physics 2024-06-12 Samuli Heiskanen , Tuomas Puurtinen , Ilari J. Maasilta

While the vibrational thermodynamics of materials with small anharmonicity at low temperatures has been understood well based on the harmonic phonons approximation; at high temperatures, this understanding must accommodate how phonons…

Materials Science · Physics 2015-10-20 Tian Lan

We study in this article how heat can be exchanged between two level systems (TLS) each of them being coupled to a thermal reservoir. Calculation are performed solving a master equation for the density matrix using the Born…

Quantum Physics · Physics 2017-03-08 Karl Joulain , Younes Ezzahri , Jose Ordonez-Miranda

Taking advantage of phase-transition and reconfigurable metamaterials, dynamic control of nanoscale thermal modulation can be achieved through the near-field radiative thermal rectification devices. In this work, an active-tuning near-field…

Applied Physics · Physics 2020-06-01 Fangqi Chen , Xiaojie Liu , Yanpei Tian , Yi Zheng

We investigate the rectification of heat current carried by electrons through a double quantum dot (DQD) system under a temperature bias. The DQD can be realized by molecules such as suspended carbon nanotube and be described by the…

Mesoscale and Nanoscale Physics · Physics 2018-06-26 Gaomin Tang , Lei Zhang , Jian Wang

Phononic (thermal) devices are studied such as thermal diode, thermal transistors, thermal logic gates, and thermal memories. However, the thermal resistor has not been demonstrated yet. Here, we propose an instantaneously adjustable…

Mesoscale and Nanoscale Physics · Physics 2016-08-26 Qichen Song , Meng An , Xiandong Chen , Zhan Peng , Jianfeng Zang , Nuo Yang

Thermal rectification is observed in jointless Pb wires at temperatures near the superconducting transition of Pb under magnetic fields. Using different magnetic-field (H) response of temperature dependence of thermal conductivity…

Superconductivity · Physics 2025-10-02 Masayuki Mashiko , Poonam Rani , Yuto Watanabe , Yoshikazu Mizuguchi

Thermal rectification can occur when heat is transferred asymmetrically. We consider in this work, the case of a composite wall with one conductive and radiative layer. Both Rosseland and surface radiation approximations are used for taking…

Applied Physics · Physics 2018-08-21 Hamou Sadat , Vital Le Dez

Thermal rectification ratios of solid-liquid phase change thermal diodes (SL-PCTDs) are not sustainable beyond a certain temperature bias, necessitating reasonably compatible designs. Manipulating the heat transfer in the forward and…

Applied Physics · Physics 2020-07-24 Zhaonan Meng , Raza Gulfam , Peng Zhang , Fei Ma

Recently, it has been shown that in graded systems, thermal rectification (TR) effect may remain in the thermodynamical limit. Here, by taking the one-dimensional rotor lattice as an illustrating model, we investigate how the graded…

Statistical Mechanics · Physics 2021-11-24 Zhengang Lu , Jiao Wang

Silicon photonics promises to alleviate the bandwidth bottleneck of modern day computing systems. But silicon photonic devices have the fundamental problem of being highly sensitive to ambient temperature fluctuations due to the high…

Optics · Physics 2015-05-14 Biswajeet Guha , Bernardo B. C. Kyotoku , Michal Lipson