激光技术, 2007, 31 (1): 0029, 网络出版: 2010-06-03
基于激光光热位移技术纳米材料热扩散率的测量
Measurement of diffusivity of nanometer material by means of laser photothermal displacement technique
激光技术 热扩散率测量 光热位移技术 纳米材料 laser technique thermal diffusivity measurement photothermal displacement technique nanometer material
摘要
为了测量纳米材料的热扩散率，采用激光光热位移技术测量了不同频率下热位移的相位，由相位的拟合曲线得到材料热扩散率的方法，得到了不同退火温度下纳米TiO2热扩散率。结果表明，纳米TiO2的热扩散率随退火温度升高而减小。
Abstract
A method for measuring diffusivity of nanometer material by means of laser photothermal displacement technique is presented,which measures the phase of thermal displacement in different frequencies and gives the diffusivity of material by fitted curves of phase. Experimental results of the diffusivity of nanometer TiO2 at different annealing temperatures are given and the results indicate that the diffusivity of nanometer TiO2 decreases while the annealing temperature rises.
杨淑连. 基于激光光热位移技术纳米材料热扩散率的测量[J]. 激光技术, 2007, 31(1): 0029. YANG Shu-lian. Measurement of diffusivity of nanometer material by means of laser photothermal displacement technique[J]. Laser Technology, 2007, 31(1): 0029.
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