Modeling of Thermal Effects in a Polyimide Target Under Pulsed Laser Irradiation

  • J.O. Sadullayev Department of Electrical Engineering and Power Engineering, Urgench State University named after Abu Raykhan Beruni, Urgench, Uzbekistan https://orcid.org/0000-0002-5577-2644
  • M.M. Akhmedov Department of Electrical Engineering and Power Engineering, Urgench State University named after Abu Raykhan Beruni, Urgench, Uzbekistan https://orcid.org/0000-0003-1208-1736
  • M.E. Vapayev Department of Electrical Engineering and Power Engineering, Urgench State University named after Abu Raykhan Beruni, Urgench, Uzbekistan https://orcid.org/0009-0007-5194-131X
  • I.Y. Davletov Department of Electrical Engineering and Power Engineering, Urgench State University named after Abu Raykhan Beruni, Urgench, Uzbekistan https://orcid.org/0009-0006-5971-7649
  • G.S. Boltaev Department of Physics, American University of Sharjah, Sharjah, United Arab Emirates https://orcid.org/0000-0003-0354-1251
DOI: https://doi.org/10.26565/2312-4334-2026-1-31
Keywords: COMSOL Multiphysics, thermal properties, laser radiation, polyimide

Abstract

Polyimide is widely valued in modern technology due to its excellent thermal stability and mechanical strength. Understanding how it responds to pulsed laser irradiation is crucial for precise laser-based microfabrication and for interpreting the conditions that can lead to laser induced graphene (LIG) formation. In this study, we use COMSOL Multiphysics to simulate the temperature evolution and heat transfer in a polyimide sample exposed to pulsed laser radiation. The model takes into account temperature dependent thermal properties, laser absorption following the Beer-Lambert law, and the Gaussian energy profile of the laser beam. Our results show how laser fluence and pulse overlap influence heat accumulation within the polymer. While the actual graphene formation process is not modeled here, the thermal analysis provides valuable insight into the photothermal conditions relevant to LIG-related processes.

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Published
2026-03-14
Cited
How to Cite
Sadullayev, J., Akhmedov, M., Vapayev, M., Davletov, I., & Boltaev, G. (2026). Modeling of Thermal Effects in a Polyimide Target Under Pulsed Laser Irradiation. East European Journal of Physics, (1), 274-280. https://doi.org/10.26565/2312-4334-2026-1-31
Issue
No. 1 (2026): East European Journal of Physics
Section
Original Papers

Copyright (c) 2026 J.O. Sadullayev, M.M. Akhmedov, M.E. Vapayev, I.Y. Davletov, G.S. Boltaev

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