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O: Fachverband Oberflächenphysik

O 25: [DS] Progress in Micro- and Nanopatterning: Techniques and Applications I (Focused Session, jointly with O - Organisers: Graaf, Hartmann)

O 25.4: Topical Talk

Dienstag, 15. März 2011, 12:30–13:00, GER 37

Surface Structuring by Single Pulse Laser Interference: Principles and Applications — •Johannes Boneberg — University of Konstanz

A nanosecond laser pulse is split into several beams. These beams are then overlapped on the sample surface. The resulting interference pattern induces surface modifications. The physical mechanism which lead to surface modification are discussed for thin films and bulk materials. Periods achieved are below 200nm, while the structure sizes could be much smaller. Besides the direct application for the generation of nanostructures, the method can be used as well to generate laterally modified chemical surface structures. These can be utilized in different applications, like the lateral patterning by a sol-gel process.