439 citations · 6.8k across the 160 of their papers we have counts for
19 papers · 1 filter
Counting statistics of heat transport in harmonic junctions -- transient and steady states
Bijay Kumar Agarwalla, Baowen Li, Jian-Sheng Wang
We study the statistics of heat transferred in a given time interval , through a finite harmonic chain, called the center , which is connected with two heat baths, the le…
Why edge effects are important on the intrinsic loss mechanisms of graphene nanoresonators?
Jin-Wu Jiang, Jian-Sheng Wang
Molecular dynamics simulations are performed to investigate edge effects on the quality factor of graphene nanoresonators with different edge configurations and of various sizes. I…
Bright and dark modes induced by graphene bubbles
Jin-Wu Jiang, Jian-Sheng Wang
Through a lattice dynamics analysis, it is revealed that the bubble plays a role of energy shield in the graphene, which helps to split the normal modes into two categories of dist…
Thermal expansion in multiple layers of graphene
Jin-Wu Jiang, Jian-Sheng Wang
In this file, we apply the nonequilibrium Green's function method to calculate the coefficient of thermal expansion (CTE) in multiple layers of graphene. We focus on the effect fro…
Phonon modes at finite temperature in graphene and single-walled carbon nanotubes
Jin-Wu Jiang, Jian-Sheng Wang
The phonon modes at finite temperature in graphene and single-walled carbon nanotubes (SWCNT) are investigated by the mode projection technique combined with molecular dynamics sim…
Molecular dynamics simulation for heat transport in thin diamond nanowires
Jin-Wu Jiang, Bing-Shen Wang, Jian-Sheng Wang
The phonon thermal conductivity in diamond nanowires (DNW) is studied by molecular dynamics simulation. It is found that the thermal conductivity in narrower DNW is lower and does…
First principle study of the thermal conductance in graphene nanoribbon with vacancy and substitutional silicon defect
Jin-Wu Jiang, Bing-Shen Wang, Jian-Sheng Wang
The thermal conductance in graphene nanoribbon with a vacancy or silicon point defect (substitution of C by Si atom) is investigated by non-equilibrium Green's function (NEGF) form…
Minimum thermal conductance in graphene and boron nitride superlattice
Jin-Wu Jiang, Bing-Shen Wang, Jian-Sheng Wang
The minimum thermal conductance versus supercell size () is revealed in graphene and boron nitride superlattice with far below the phonon mean free path. The minimum…
Joule heating and thermoelectric properties in short single-walled carbon nanotubes: electron-phonon interaction effect
Jin-Wu Jiang, Jian-Sheng Wang
The electron-phonon interaction (EPI) effect in single-walled carbon nanotube is investigated by the nonequilibrium Green's function approach within the Born approximation. Special…
Graphene-based tortional resonator from molecular dynamics simulation
Jin-Wu Jiang, Jian-Sheng Wang
Molecular dynamics simulations are performed to study graphene-based torsional mechanical resonators. The quality factor is calculated by , where the frequency and…
Transient behavior of full counting statistics in thermal transport
Jian-Sheng Wang, Bijay Kumar Agarwalla, Huanan Li
The generating function of energy counting statistics is derived for phononic junction systems. It is expressed in terms of the contour-ordered self-energy of the lead with shifted…
Geometrical effects on spin injection: 3D spin drift diffusion model
Juzar Thingna, Jian-Sheng Wang
We discuss a three-dimensional (3D) spin drift diffusion (SDD) model to inject spin from a ferromagnet (FM) to a normal metal (N) or semiconductor (SC). Using this model we investi…
Role of the on-site pinning potential in establishing quasi-steady-state conditions of heat transport in finite quantum systems
Eduardo C. Cuansing, Huanan Li, Jian-Sheng Wang
We study the transport of energy in a finite linear harmonic chain by solving the Heisenberg equation of motion, as well as by using nonequilibrium Green's functions to verify our…
Manipulation of heat current by the interface between graphene and white graphene
Jin-Wu Jiang, Jian-Sheng Wang
We investigate the heat current flowing across the interface between graphene and hexagonal boron nitride (so-called white graphene) using both molecular dynamics simulation and no…
Heat generation and transport due to time-dependent forces
Bijay Kumar Agarwalla, Jian-Sheng Wang, Baowen Li
We study heat transport for solids in the presence of arbitrary time-dependent force. Using nonequilibrium Green's function (NEGF) approach we present an exact analytical expressio…
Phonon Hall effect in ionic crystals in the presence of static magnetic field
Bijay K. Agarwalla, Lifa Zhang, Jian-Sheng Wang +1
We study phonon Hall effect (PHE) for ionic crystals in the presence of static magnetic field. Using Green-Kubo formula, we present an exact calculation of thermal conductivity ten…
A theoretical study of thermal conductivity in single-walled boron nitride nanotubes
Jin-Wu Jiang, Jian-Sheng Wang
We perform a theoretical investigation on the thermal conductivity of single-walled boron nitride nanotubes (SWBNT) using the kinetic theory. By fitting to the phonon spectrum of b…
Interfacial thermal transport in atomic junctions
Lifa Zhang, Pawel Keblinski, Jian-Sheng Wang +1
We study ballistic interfacial thermal transport across atomic junctions. Exact expressions for phonon transmission coefficients are derived for thermal transport in one-junction a…
The phonon Hall effect: theory and application
Lifa Zhang, Jie Ren, Jian-Sheng Wang +1
We present a systematic theory of the phonon Hall effect in a ballistic crystal lattice system, and apply it on the kagome lattice which is ubiquitous in various real materials. By…