Heat Transport in Nanoscale Heterosystems: A Numerical and Analytical Study

Figure 2

Spatial temperature profiles at 1?picosecond (solid line) and 6?picoseconds (dashed line) delay of a 10?nm thin Bi-film. The thermal boundary resistance in the simulation is $R_K=9.76\times {10}^{-8}$?(K?m²)/W. The total simulation slab thickness is 100?nm but for a better representation only the first 30?nm are shown. At 1?picosecond, a temperature gradient in the Bi-film is still present. After $~$6?picoseconds the temperature gradient has vanished and results in a homogeneous spatial temperature distribution.