Exploring Nanoscale Heat Transfer: Non-Equilibrium Molecular Dynamics Simulation of Effective Thermal Conductivity in Silicon Nanofilms

Using nonequilibrium molecular dynamics methods in the LAMMPS software, heat transfer in Si thin films was studied. The effective thermal conductivity of silicon nanofilms was investigated as a function of thickness, temperature, and temperature difference between two opposite film edges. The results obtained are in good agreement with the known studies conducted by other authors on similar films. The effective thermal conductivity increases with increasing film thickness, and the temperature dependence of the effective thermal conductivity of the sample under study decreases with increasing temperature. In a certain temperature range, the temperature difference between the film edges has little effect on the effective thermal conductivity.