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Proceedings Paper

Laser-assisted generation of electronic circuits on tailored thermoplastics
Author(s): Gerd Esser; Manfred Geiger
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Paper Abstract

This paper describes the tailoring of thermoplastics and the laser assisted generation of active regions that catalyze a chemical metal deposition in a liquid plating solution on these thermoplastics. The plated regions may serve as an electronic circuit on the insulating thermoplastic substrate. Tailoring of the thermoplastic materials is achieved by addition of a special activator powder. This powder consists of micro-encapsulated catalytic core particles with a non-catalytic barrier layer on their surface. Different encapsulation methods are compared for a copper core material. Laser activation is examined using a cw CO2 laser and an Nd:YAG laser. No activation is achieved with the CO2 laser. With the Nd:YAG laser and suitable process parameters, activation is possible even at writing speeds of up to 650 mm/s. A qualitative model is presented that explains the basic mechanisms of the laser activation process.

Paper Details

Date Published: 3 March 2003
PDF: 9 pages
Proc. SPIE 4831, First International Symposium on High-Power Laser Macroprocessing, (3 March 2003); doi: 10.1117/12.497590
Show Author Affiliations
Gerd Esser, Bayerisches Laserzentrum gGmbH (Germany)
Manfred Geiger, Univ. Erlangen-Nuernberg (Germany)

Published in SPIE Proceedings Vol. 4831:
First International Symposium on High-Power Laser Macroprocessing
Isamu Miyamoto; Kojiro F. Kobayashi; Koji Sugioka; Reinhart Poprawe; Henry Helvajian, Editor(s)

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