Improvement in surface characterisitcs of polymers for subsequent electroless plating using liquid assisted laser processing

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Abstract

Metallization of polymers is a widely used process in the electronic industry that involves their surface modification as a pre-treatment step. Laser-based surface modification is one of the commonly used techniques for polymers due to its speed and precision. The process involves laser heating of the polymer surface to generate a rough or porous surface. Laser processing in liquid generates superior surface characteristics that result in better metal deposition. In this study, a comparison of the surface characteristics obtained by laser processing in water vis-à-vis air along with the deposition characteristics are presented. In addition, a numerical model based on the finite volume method is developed to predict the temperature profile during the process. Based on the model results, it is hypothesized that physical phenomena such as vapor bubble generation and plasma formation may occur in the presence of water, and it is because of these effects that causes an increase in surface porosity.

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Marla, D., Zhang, Y., Jabbari, M., Sonne, M. R., Spangenberg, J., & Hattel, J. H. (2016). Improvement in surface characterisitcs of polymers for subsequent electroless plating using liquid assisted laser processing. In Physics Procedia (Vol. 83, pp. 211–217). Elsevier B.V. https://doi.org/10.1016/j.phpro.2016.08.011

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