Analysis of high-order harmonics of temperature wave for Fourier transform thermal analysis

被引：37
|
作者：
Morikawa, J [1 ]
Hashimoto, T [1 ]
机构：
[1] Tokyo Inst Technol, Dept Organ & Polymer Mat, Tokyo 1528552, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1998年 / 37卷 / 12A期
关键词：
temperature wave; harmonics; thermal diffusivity; heat capacity; Fourier transform;
D O I：
10.1143/JJAP.37.L1484
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The high-order harmonics of temperature wave were detected in a thin film by inputting a square pulse train with a variable duty factor to generate temperature modulation. In Fourier analysis, the harmonics were observed up to the 42(th) order and the mathematical rule was experimentally confirmed. This principle was applied to a technique called "Fourier transform thermal analysis," which made it possible to determine simultaneously thermal diffusivity and heat capacity per unit volume as a function of frequency and temperature.
引用
收藏
页码：L1484 / L1487
页数：4
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