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O: Fachverband Oberflächenphysik
O 37: Posters: Plasmonics, Electronic Structure and Spin-Orbit Interaction, Semiconductor and Insulator Surfaces, Nanostructures
O 37.105: Poster
Tuesday, April 1, 2014, 18:30–22:00, P2
Fabrication and application of nanosecond laser-induced surface nanostructures on polyimide — •Lukas Bayer1,2, Pierre Lorenz1, Martin Ehrhardt1, Klaus Zimmer1, and Lutz Engisch2 — 1Leibniz-Institut für Oberflächenmodifizierung e. V., Permoserstraße 15, 04315 Leipzig, Germany — 2Hochschule für Technik, Wirtschaft und Kultur Leipzig, P.O. Box 301166, 04251 Leipzig, Germany
The formation of nanostructures on polymers, produced by laser irradiation near the ablation threshold, is well-known. In the last 20 years, the influence of laser parameters on the resultant structures has been manifold studied. However, applications for this kind of constant and good manageable surface structures are hardly known. In this study, the fabrication and application of KrF excimer laser-induced 3-D conical surface structures on polyimide is presented. The properties of the laser-induced surface structures that are dependent on the laser parameters are analysed by optical and scanning electron microscopy (SEM). Furthermore, some applications of these surface structures are presented. Particularly in the field of product safety there are many opportunities to bring these structures to use. There are both low and high security features possible. A low security feature could be a microscopic QR-code containing any desired data. For high security applications it is also possible to create pictures with very high resolution. In this case, the resolution is much higher than in conventional printing technologies.