中文摘要：

采用非平衡态分子动力学（NEMD）方法模拟分析了纳米铂（Pt）薄膜的导热性能与脉冲激光作用下的温度响应特性。结果表明，100—500nm铂薄膜的法向导热系数比体材料值低很多，而且低于其面向导热系数；微米铂薄膜的温度响应时间在纳秒量级；在脉冲加热的初始阶段，有一快速非傅立叶热波沿铂薄膜的厚度方向传递。

英文摘要：

Nonequilibrium molecular dynamics simulations are employed to explore the heat conduction and the temperature response characteristics of a platinum nanofilm. It shows that with the thickness between 100 nm and 500 nm the cross-plane thermal conductivity of platinum nanofilm is much lower than the bulk value, and also lower than the in-plane thermal conductivity. The results also indicate that the temperature response time in platinum film with micrometer thickness is in a nanosecond magnitude. It is also found that at the initial stage of pulse heating, there is a faster Non-Fourier heat wave across the film.