Vacancy-induced thermal transport in two-dimensional silicon carbide: a reverse non-equilibrium molecular dynamics study

2020 ◽  
Vol 22 (24) ◽  
pp. 13592-13602 ◽  
Author(s):  
A. S. M. Jannatul Islam ◽  
Md. Sherajul Islam ◽  
Naim Ferdous ◽  
Jeongwon Park ◽  
Akihiro Hashimoto
Keyword(s):  
Molecular Dynamics ◽  
Silicon Carbide ◽  
Thermal Transport ◽  
Two Dimensional ◽  
Transport Behavior ◽  
Non Equilibrium Molecular Dynamics ◽  
Non Equilibrium

We explored the effect of vacancies (bi vacancy, point vacancy, and mixed vacancy) on the phonon thermal transport behavior of 2D-SiC using RNEMD simulations.

In-plane thermal transport in black phosphorene/graphene layered heterostructures: a molecular dynamics study

2018 ◽  
Vol 20 (32) ◽  
pp. 21151-21162 ◽  
Author(s):  
Ting Liang ◽  
Ping Zhang ◽  
Peng Yuan ◽  
Siping Zhai
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Thermal Transport ◽  
Single Layer ◽  
Black Phosphorene ◽  
Non Equilibrium Molecular Dynamics ◽  
Dynamics Simulations ◽  
Non Equilibrium ◽  
Thermal Conductivities

We use non-equilibrium molecular dynamics simulations to study the in-plane thermal conductivities of black phosphorene/graphene heterostructures and single-layer black phosphorene in black phosphorene/graphene heterostructures.

A Theoretical Study of the Temperature Gradient Effect on the Soret Coefficient in n-Pentane/n-Decane Mixtures Using Non-Equilibrium Molecular Dynamics

2020 ◽  
Vol 45 (4) ◽  
pp. 319-332
Author(s):  
Xiaoyu Chen ◽  
Ruquan Liang ◽  
Yong Wang ◽  
Ziqi Xia ◽  
Lichun Wu ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Temperature Gradient ◽  
Thermal Gradient ◽  
Linear Response ◽  
Theoretical Study ◽  
Soret Coefficient ◽  
Thermal Gradients ◽  
Gradient Effect ◽  
Non Equilibrium Molecular Dynamics ◽  
Non Equilibrium

AbstractThe effect of the temperature gradient on the Soret coefficient in n-pentane/n-decane (n-C5/n-C10) mixtures was investigated using non-equilibrium molecular dynamics (NEMD) with the heat exchange (eHEX) algorithm. n-Pentane/n-decane mixtures with three different compositions (0.25, 0.5, and 0.75 mole fractions, respectively) and the TraPPE-UA force field were used in computing the Soret coefficient ({S_{T}}) at 300 K and 1 atm. Added/removed heat quantities (ΔQ) of 0.002, 0.004, 0.006, 0.008, and 0.01 kcal/mol were employed in eHEX processes in order to study the effect of different thermal gradients on the Soret coefficient. Moreover, a phenomenological description was applied to discuss the mechanism of this effect. Present results show that the Soret coefficient values firstly fluctuate violently and then become increasingly stable with increasing ΔQ (especially in the mixture with a mole fraction of 0.75), which means that ΔQ has a smaller effect on the Soret coefficient when the temperature gradient is higher than a certain thermal gradient. Thus, a high temperature gradient is recommended for calculating the Soret coefficient under the conditions that a linear response and constant phase are ensured in the system. In addition, the simulated Soret coefficient obtained at the highest ΔQ within three different compositions is in great agreement with experimental data.

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