Size and memory effects on heat conduction in a thin film induced by an ultra-fast laser

Two improved heat conduction models which reflect size and memory effects based on the CV model and the DPL model are proposed to simulate a one-dimensional thermal transport problem in a thin film induced by the ultra-fast laser. The results show that a thermal wave effect is appeared in heat conduction given by the improved CV model but not in that obtained by the improved DPL model. We find that for the improved CV model in this work a larger Knudsen number will lead to a higher temperature. Although the improved CV model and the CV model lead to the similar thermal wave behaviour, the thermal wave speeds for the two models are different.