Thermal diffusivities of commercial transparent polymer films measured using laser induced thermal wave

Acoustical Science and Technology

Junji Hirama¹  Yukihiro Ishimaru¹  Koji Aizawa¹  Yoshiaki Tokunaga¹  Hiroyuki Kobayashi¹ 

[1]Graduate School of Electrical Engineering and Electronics, Kanazawa Institute of Technology

关键词: Microphone;    Photo acoustic microscopy;    Commercial polymer transparent film;    Thermal diffusivity;    He-Ne laser;   

DOI  :  10.1250/ast.31.288

学科分类：声学和超声波

来源: Acoustical Society of Japan

【 摘 要 】

References(27)Cited-By(3)The thermal diffusivities of transparent polymer films were measured using a laser induced thermal wave generated on a carbon substrate. This method easily takes into account the thermal impedance difference between a transparent polymer film and carbon substrate. The root modulation frequency dependence of the phase delay of thermal waves in position with and without a transparent polymer film was investigated. In this paper, we describe the principle of the measurement method and several equations used in the evaluation. Finally, the thermal diffusivities of the transparent polymer films, such as poly(vinylidene fluoride), poly(ethyleneterephthalate), and polyimide, were investigated by this method.

【 授权许可】

Unknown