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Large area direct fabrication of periodic arrays using interference patterning

: Lasagni, A.F.; Langheinrich, D.; Bieda, M.; Wetzig, A.; Roch, T.; Perez, H.; Beyer, E.


Bachmann, F.G. (Ed.) ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Laser-based Micro- and Nanopackaging and Assembly VI : San Francisco, California, USA, January 2012
Bellingham, WA: SPIE, 2012 (Proceedings of SPIE 8244)
ISBN: 978-0-8194-8887-9
Paper 82440F
Conference "Laser-Based Micro- and Nanopackaging and Assembly" <6, 2012, San Francisco/Calif.>
Conference Paper
Fraunhofer IWS ()
DLIP; interference; surface functionalization

Periodic patterned surfaces do not merely provide unique properties, but act as intelligent surfaces capable of selectively influencing multiple functionalities. One of the most recent technologies allowing fabrication of periodic arrays within the micro- and submicrometer scales is Direct Laser Interference Patterning (DLIP). The method permits the direct treatment of the material's surface based on locally induced photothermal or photochemical processes. Furthermore, DLIP is particularly suited to fabricate periodic patterns on planar and non-planar surfaces offering a route to large-scale production. In this paper, the fabrication of spatially ordered structures on different materials such as polymers, metals and diamond like carbon films is discussed. Several application examples as fu nction of the processed material are introduced, including bio functional surfaces for cell guidance on polymers, wear resistant properties for structured diamond carbon like coatings and metals, as well as micro-patterned flexible polymers with controlled optical properties.