Regensburg 2016 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 70: Nanostructures at Surfaces: Other Aspects

O 70.4: Poster

Mittwoch, 9. März 2016, 18:15–20:30, Poster A

Investigation of 3D micron structures formation on polyimide and their potential for applications — •Lukas Bayer, Pierre Lorenz, Martin Ehrhardt, and Klaus Zimmer — Leibniz-Institut für Oberflächenmodifizierung e. V., Permoserstraße 15, 04318 Leipzig, Germany

Lasers have a great potential to produce micro/nano structures fabrication in a fast and cost-effective way. But new discovered or already known self-assembly processes remain unused in commercial or scientific fields. The formation and the application of micro-sized cone structures on PI, produced by laser irradiation using a KrF excimer laser (wavelength 248 nm, pulse duration 25 ns) near the ablation threshold is presented. The influence of the laser irradiation parameters on the cone properties and the density of their appearance are studied by evaluation of images after the irradiation sequence and after each laser shot. The properties of the laser-induced 3D conical surface structures, the height and the width, are analysed by optical and scanning electron microscopy (SEM). The chemical modification of the polymer surface is studied too. In conclusion of found results of the influence of the laser processing parameters to the cone pattern formation process different application will be discussed shortly. These are: application for identification in the field of security features fabrication or the process / equipment validation for laser based processes.