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Invisible cloak has long captivated the popular conjecture and attracted intensive research in various communities of wave dynamics, e.g., optics, electromagnetics, acoustics, etc. However, their inhomogeneous and extreme parameters imposed…

Materials Science · Physics 2013-02-05 Tiancheng Han , Baowen Li , Cheng-Wei Qiu

Understanding and quantifying the fundamental physical property of coherence of thermal excitations is a long-standing and general problem in physics. The conventional theory, i.e. the phonon gas model, fails to describe coherence and its…

Computational Physics · Physics 2022-01-11 Zhongwei Zhang , Yangyu Guo , Marc Bescond , Jie Chen , Masahiro Nomura , Sebastian Volz

The efficiencies/coefficients of performance of three-terminal devices, comprising two electronic terminals and a thermal one (e.g., a boson bath) are discussed. In particular, two procedures are analyzed. (a) One of the electronic…

Mesoscale and Nanoscale Physics · Physics 2015-03-05 O. Entin-Wohlman , Y. Imry , A. Aharony

Thermoelectric power, electrical conductivity, and high field Hall effect were studied over a broad temperature range in ferromagnetic Ga(1-x)Mn(x)As epitaxial layers (0.015<x<0.06). Thermoelectric power analysis gives the information about…

The resonant tunneling model is the simplest model for describing electronic transport through nanoscale objects like individual molecules. A complete understanding includes not only charge transport but also thermal transport and their…

Mesoscale and Nanoscale Physics · Physics 2021-01-25 Matthias A. Popp , André Erpenbeck , Heiko B. Weber

In this article, we show fundamentals and recent advances on the transverse thermoelectric generation, in which a thermopower is generated in the direction perpendicular to an applied temperature gradient. Transverse thermoelectric…

Materials Science · Physics 2022-10-26 Ken-ichi Uchida , Joseph P. Heremans

We study nonlinear transport effects on the maximum efficiency and power for both inelastic and elastic thermoelectric generators. The former refers to phonon-assisted hopping in double quantum-dots, while the latter is represented by…

Mesoscale and Nanoscale Physics · Physics 2017-06-21 Jian-Hua Jiang , Yoseph Imry

Thermo-electric transport at the nano-scale is a rapidly developing topic, in particular in superconductor-based hybrid devices. In this review paper, we first discuss the fundamental principles of electronic cooling in mesoscopic…

Superconductivity · Physics 2015-06-19 Hervé Courtois , Frank W. J. Hekking , Hung Q. Nguyen , Clemens Winkelmann

It has been proposed for a long time now that the reduction of the thermal conductivity by reducing the phonon mean free path is one of the best way to improve the current performance of thermoelectrics. By measuring the thermal conductance…

We discuss the temperature-dependent thermoelectric transport properties of semiconductor nanostructures comprising a quantum dot coupled to quantum wires: the thermal dependence of the electrical conductance, thermal conductance, and…

Mesoscale and Nanoscale Physics · Physics 2021-02-17 D. F. Aranguren-Quintero , E. Ramos , J. Silva-Valencia , M. S. Figueira , L. N. Oliveira , R. Franco

In this study, analysis of shell and tube heat exchanger (HE) is performed. Theory part on heat transfer, calculation of heat exchanger and general thermal and hydrological properties are described. Several models are developed and computed…

Fluid Dynamics · Physics 2018-10-09 D. Loginov , A. Ustinov

In this work, we are developing the theoretical prototype and improving the technique for installing the Thermoelectric Generator (TEG) set up in automobiles. We have considered a linear curve fit from a zigzag curve of reported mass flow…

Materials Science · Physics 2017-08-10 Kumar Gaurav , Shashank Sisodia , Sudhir K Pandey

We study thermal and charge transport in a three-terminal setup consisting of one superconducting and two ferromagnetic contacts. We predict that the simultaneous presence of spin filtering and of spin- dependent scattering phase shifts at…

Mesoscale and Nanoscale Physics · Physics 2013-01-30 P. Machon , M. Eschrig , W. Belzig

In this paper, we show that a hybrid method using coupled boundary measurements can determine electrical conductivity, thermal conductivity, and the product of heat capacity and heat density within a bounded domain on the plane uniquely up…

Analysis of PDEs · Mathematics 2017-02-01 Yifan Chang

We theoretically investigate nonlinear ballistic thermoelectric transport in a superlattice-structured nanowire. By a special choice of nonuniform widths of the superlattice barriers - analogous to anti-reflection coating in optical systems…

Mesoscale and Nanoscale Physics · Physics 2016-09-14 Hossein Karbaschi , John Lovén , Klara Courteaut , Andreas Wacker , Martin Leijnse

We develop a continuum theory for thermoelectric bodies following the framework of continuum mechanics and conforming to general principles of thermodynamics. For steady states, the governing equations for local fields are intrinsically…

Materials Science · Physics 2012-03-05 Liping Liu

Low-dimensional electronic systems in thermoelectrics have the potential to achieve high thermal-to-electric energy conversion efficiency. A key measure of performance is the efficiency when the device is operated under maximum power…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 Natthapon Nakpathomkun , Hongqi Q. Xu , Heiner Linke

Whereas thermoelectric performance is normally limited by the figure of merit ZT, transverse thermoelectrics can achieve arbitrarily large temperature differences in a single leg even with inferior ZT by being geometrically tapered. We…

Materials Science · Physics 2015-06-15 Chuanle Zhou , S. Birner , Yang Tang , K. Heinselman , M. Grayson

An experimental realization of a heat exchanger with commercial thermoelectric generators (TEGs) is presented. The power producing capabilities as a function of flow rate and temperature span are characterized for two different commercial…

Instrumentation and Detectors · Physics 2016-05-10 R. Bjørk , A. Sarhadi , N. Pryds , N. Lindeburg , P. Viereck

We discuss thermal rectification and thermoelectric energy conversion from the perspective of nonequilibrium statistical mechanics and dynamical systems theory. After preliminary considerations on the dynamical foundations of the…

Statistical Mechanics · Physics 2016-05-11 Giuliano Benenti , Giulio Casati , Carlos Mejia-Monasterio , Michel Peyrard