碳纳米管堆积体在快速加热条件下的热感效应

Thermal Inductance in Packed Carbon Nanotubes under Fast Laser Heating

本文提出了一种热感模型,用来描述快速加热条件下碳纳米管堆积体表现出来的非傅里叶导热特性。模型较好地解释了碳纳米管堆积体在真空下受到纳秒脉冲激光快速加热时的反常温度响应。实验测得碳纳米管堆积体在室温下的热感系数为6.25×10^(-17)K·s·m/W。热感模型的提出为研究材料在极短时间尺度下的传热特性提供了新的思路。

A transient heat conduction model,thermal inductance model,is proposed to capture the non-Fourier heat conduction in packed carbon nanotubes heated by a nanosecond pulse laser.The model can interpret the unusual temperature response of the packed carbon nanotubes under nanosecond laser heating in extreme vacuum.Measured thermal inductance index of packed carbon nanotubes in room temperature is about 6.25 ×10^-17 K·s·m/W.The proposed thermal inductance model may provide a new way to understand heat transfer at small time scale.