Title

Determination Of Thermophysical Properties For Polymer Films Using Conduction Analysis Of Laser Heating

Keywords

Laser heating; Polymers; Thermal conductivity; Thermal diffusivity

Abstract

Determination of the thermophysical properties of thin film materials is important for modeling and optimizing laser microvia drilling of organic substrates in microelectronics applications. Techniques to measure the density, thermal conductivity, thermal diffusivity, thermal decomposition point, and specific ablation heat of thin polymer films are described. An experimental apparatus was set up for laser heating of the sample. To measure the thermal diffusivity, an analytic heat transfer model is developed. One-dimensional heat conduction is assumed due to the small thickness of the film compared to the radius of the laser beam. The value of thermal diffusivity is obtained by fitting the experimental data to the theory. The specific ablation heat is obtained by measuring the mass loss during laser ablation. The experimental apparatus and the property determination methodology can also be applied to thin samples of other materials. © 2007 Springer Science+Business Media, LLC.

Publication Date

6-1-2007

Publication Title

International Journal of Thermophysics

Volume

28

Issue

3

Number of Pages

980-995

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1007/s10765-007-0199-6

Socpus ID

34548667999 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/34548667999

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