Europhys. Lett.
Volume 70, Number 6, June 2005
Page(s) 831 - 835
Section Condensed matter: electronic structure, electrical, magnetic, and optical properties
Published online 11 May 2005
Europhys. Lett., 70 (6), pp. 831-835 (2005)
DOI: 10.1209/epl/i2005-10037-y

$\chem{F_2}$-laser polishing of polytetrafluoroethylene surfaces

T. Gumpenberger1, J. Heitz1, D. Bäuerle1 and T. C. Rosenmayer2

1  Institut für Angewandte Physik, Johannes-Kepler-Universität - 4040 Linz, Austria
2  W. L. Gore & Associates, GmbH - 85640 Putzbrunn, Germany

received 7 March 2005; accepted in final form 18 April 2005
published online 11 May 2005

The surface roughness and the optical properties of dense polytetrafluoroethylene (PTFE) can be modified by 157$\un{nm}$ $\chem{F_2}$-laser irradiation in $\chem{N_2}$ atmosphere. With PTFE foils, laser-treatment results in an improved transparency which is attributed to a smoothening of the surface. The treated foils exhibit a similar mechanical stability as the untreated ones.

79.20.Ds - Laser-beam impact phenomena.
61.41.+e - Polymers, elastomers, and plastics.
81.40.Tv - Optical and dielectric properties (related to treatment conditions).

© EDP Sciences 2005