Thermal transport in two-dimensional C3N/C2N superlattices: A molecular dynamics approach

نویسندگان

چکیده

Nanostructured superlattices have been the focus of many researchers due to their physical and manipulatable properties. They aim find promising materials for new electronic thermoelectric devices. In present study, we investigate thermal conductivity two-dimensional (2D) C3N/ C2N using non-equilibrium molecular dynamics. We analyze dependence on total length, temperature, temperature difference between baths superlattices. The minimum phonon mean free path at a superlattice period 5.2 nm are 23.2 W/m.K 24.7 nm, respectively. Our results show that specific as increases, number interfaces decreases, thus resistance effective system increases. found long lengths (Lx >80 nm), high-frequency low-wavelength phonons scattered throughout interfaces, while short lengths, there is wave interference reduces conductivity. combination these two effects, i.e., interface scattering, reason existence in

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Molecular dynamics calculation of the thermal conductivity of superlattices

We report on molecular dynamics studies of heat flow in superlattices. The computer simulations are performed using classical mechanics with periodic boundary conditions. The heat flow is in the direction normal to the layers. We have studied the variation of the conductivity with the repeat distance and the effect of interfacial roughness. We discuss the relation of these results to experiment...

متن کامل

Chaotic transport in low-dimensional superlattices

We predict that in arrays of quantum dots ~0D superlattice! and arrays of one-dimensional quantum wires ~1D superlattice! chaotic transport should be observed in the presence of an ac field and for a wide range of physical parameters, like the external dc bias, contact charge, doping levels, and disorder in the array. Timedependent current oscillations set in the array due to the formation of e...

متن کامل

Thermal Transport in Fullerene Derivatives Using Molecular Dynamics Simulations

In order to study the effects of alkyl chain on the thermal properties of fullerene derivatives, we perform molecular dynamics (MD) simulations to predict the thermal conductivity of fullerene (C60) and its derivative phenyl-C61-butyric acid methyl ester (PCBM). The results of non-equilibrium MD simulations show a length-dependent thermal conductivity for C60 but not for PCBM. The thermal condu...

متن کامل

Molecular dynamics simulations of thermal transport in thin silicon nanowires

Silicon is one of the best known materials of our age, cheap and readily available, being the basic constituent of semiconductor electronics. It would therefore be highly desirable to broaden its utilization for, e.g. renewable energy applications. Recently, it has been proposed that Silicon may be engineered to be an efficient thermoelectric material for use in solid state devices[1, 2]. Altho...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: International Journal of Heat and Mass Transfer

سال: 2021

ISSN: ['1879-2189', '0017-9310']

DOI: https://doi.org/10.1016/j.ijheatmasstransfer.2021.121561