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Silicides are used extensively in nano- and microdevices due to their low electrical resistivity, low contact resistance to silicon, and their process compatibility. In this work, the thermal interface conductance of TiSi$_2$, CoSi$_2$,…

介观与纳米尺度物理 · 物理学 2017-03-01 Ning Ye , Joseph P Feser , Sridhar Sadasivam , Timothy S. Fisher , Tianshi Wang , Chaoying Ni , Anderson Janotti

The predictive modeling of lattice thermal conductivity is of fundamental importance for the understanding and design of materials for a wide range of applications. Two major approaches, namely molecular dynamics (MD) simulations and…

材料科学 · 物理学 2019-08-14 Marcello Puligheddu , Yi Xia , Maria K. Y. Chan , Giulia Galli

We examine, using molecular dynamics simulation, the structure and thermodynamics of the (100) and (111) disordered face-centered cubic (FCC) crystal/melt interfaces for a binary hard-sphere system. This study is an extension of our…

统计力学 · 物理学 2009-10-31 Ruslan L. Davidchack , Brian. B. Laird

We introduce a lattice dynamics package which calculates elastic, thermodynamic and thermal transport properties of crystalline materials from data on their force and potential energy as a function of atomic positions. The data can come…

The thermal transport across metal-insulator interface can be characterized by electron-phonon interaction through which an electron lead is coupled to a phonon lead if phonon-phonon coupling at the interface is very weak. We investigate…

材料科学 · 物理学 2013-10-17 Lifa Zhang , Jing-Tao Lü , Jian-Sheng Wang , Baowen Li

Nonreciprocal transport phenomena indicate that the forward and backward flows differ, and are attributed to broken inversion symmetry. In this paper, we study the nonreciprocity of a thermal and thermoelectric transport of electronic…

介观与纳米尺度物理 · 物理学 2019-03-13 Ryota Nakai , Naoto Nagaosa

We introduce EChemDID, a model to describe electrochemical driving force in reactive molecular dynamics simulations. The method describes the equilibration of external electrochemical potentials (voltage) within metallic structures and…

材料科学 · 物理学 2015-09-02 Nicolas Onofrio , Alejandro Strachan

Thermoelectric conductance of an edge mode is investigated. The edge modes of a $2D $ and $3D$ two band model with parabolic dispersion is considered. For the the one dimensional non interacting fermions the thermal conductivity computed…

介观与纳米尺度物理 · 物理学 2019-06-21 D. Schmeltzer

Thermodynamic probes can be used to deduce microscopic internal dynamics of nanoscale quantum systems. Several direct entropy measurement protocols based on charge transport measurements have been proposed and experimentally applied to…

介观与纳米尺度物理 · 物理学 2022-12-22 E. Pyurbeeva , J. O. Thomas , J. A. Mol

We expand iterative numerically-exact influence functional path-integral tools and present a method capable of following the nonequilibrium time evolution of subsystems coupled to multiple bosonic and fermionic reservoirs simultaneously.…

介观与纳米尺度物理 · 物理学 2015-06-15 Lena Simine , Dvira Segal

Using non-equilibrium molecular dynamics (NEMD) simulation, we study thermal properties of the so-called nanoporous graphene (NPG) sheet which contains a series of nanoporous in an ordered way and was synthesized recently (Science 360…

计算物理 · 物理学 2021-07-29 Farrokh Yousefi , Farhad Khoeini , Ali Rajabpour

Interfaces impede heat flow in micro/nanostructured systems. Conventional theories for interfacial thermal transport were derived based on bulk phonon properties of the materials making up the interface without explicitly considering the…

Interface equations are derived for both binary diffusive and binary fluid systems subjected to non-equilibrium conditions, starting from the coarse-grained (mesoscopic) models. The equations are used to describe thermo-capillary motion of…

软凝聚态物质 · 物理学 2015-06-25 Ravi Bhagavatula , David Jasnow , Takao Ohta

An energy-based liquid-vapor interface detection method is presented using molecular dynamics (MD) simulations of liquid menisci confined between two parallel plates under equilibrium and evaporation/condensation conditions. This method…

化学物理 · 物理学 2021-09-02 Mustafa Ozsipahi , Yigit Akkus , Chinh Thanh Nguyen , Ali Beskok

Reverse non-equilibrium molecular dynamics (RNEMD) simulations were used to study heat transport in solvated gold interfaces which have been functionalized with a low molecular weight thiolated polyethylene glycol (PEG). The gold interfaces…

化学物理 · 物理学 2023-12-12 Sydney A. Shavalier , J. Daniel Gezelter

Spurred by the increasing needs in electrochemical energy storage devices, the electrode/electrolyte interface has received a lot of interest in recent years. Molecular dynamics simulations play a proeminent role in this field since they…

材料科学 · 物理学 2021-05-17 Laura Scalfi , Thomas Dufils , Kyle Reeves , Benjamin rotenberg , Mathieu Salanne

The temperature-dependent phonons are a generalization of interatomic force constants varying in T, which as found widespread use in computing the thermal transport of materials. A formal justification for using this combination to access…

We study non-equilibrium (NE) fluctuation-dissipation (FD) relations in the context of quantum thermoelectric transport through a two-terminal nanodevice, in the steady-state and with interaction. The FD relations for the one- and…

介观与纳米尺度物理 · 物理学 2013-05-23 H. Ness , L. K. Dash

A combination of fundamental measure density functional theory and Monte Carlo computer simulation is used to determine the orientation-resolved interfacial tension and stiffness for the equilibrium hard-sphere crystal-fluid interface.…

The understanding and modeling of the heat transport across nanometer and sub-nanometer gaps where the distinction between thermal radiation and conduction become blurred remains an open question. In this work, we present a…

介观与纳米尺度物理 · 物理学 2022-08-17 Yangyu Guo , Christophe Adessi , Manuel Cobian , Samy Merabia