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Determination of Thermophysical Properties for Polymer Films using Conduction Analysis of Laser Heating

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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.

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Authors and Affiliations

  1. Center for Research and Education in Optics and Lasers (CREOL), Department of Mechanical, Materials and Aerospace Engineering, University of Central Florida, Orlando, Florida, 32816-2700, U.S.A

    Chong Zhang & Aravinda Kar

  2. Intel Corporation – Assembly Technology Development, 5000 W. Chandler Blvd., CH5-159, Chandler, Arizona, 85226-3699, U.S.A

    Islam A. Salama

  3. AppliCote Associates, LLC, 1445 Dolgner Place, Ste. 23, Sanford, Florida, 32771, U.S.A

    Nathaniel R. Quick

Authors
  1. Chong Zhang
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  2. Islam A. Salama
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  3. Nathaniel R. Quick
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  4. Aravinda Kar
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Corresponding author

Correspondence to Aravinda Kar.

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Zhang, C., Salama, I.A., Quick, N.R. et al. Determination of Thermophysical Properties for Polymer Films using Conduction Analysis of Laser Heating. Int J Thermophys 28, 980–995 (2007). https://doi.org/10.1007/s10765-007-0199-6

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

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