Structured surfaces do not only possess unique features but operate in an intelligent manner with versatile functions and are used amongst other things in medicine, photovoltaics and automotive industry. Fraunhofer IWS offers an efficient and competitive process for direct surface patterning. Compared to other technologies, varying multilayer structures on plain and complex surfaces are produced in a single process step.
For creating periodic structures, at least two laser beams are interfered on the substrate. An area of up to several square centimeters can be processed with a single laser pulse. Furthermore, the interference pattern occurs within the complete interference volume of the partial beams (principle of DLIP) and enables the structuring of 3D-parts like embossing rollers and sleeves for a roll-to-roll-process.
The latest generation of DLIP processing heads permits the variation of period and orientation of structures during the processing. Thereby a wide range of surface patterns can be realized with only one system and process step.
The process heads are offered individually and can be implemented for example in existing, robot supported laser facilities. On the other hand, Fraunhofer IWS provides compact DLIP-facilities with already integrated head, corresponding periphery (laser, case etc.) and especially developed controlling software.