This study delves into advanced multi-beam technologies, focusing on the integration of Diffractive Optical Elements (DOEs) and Spatial Light Modulators (SLMs) in micro and nanostructuring. Significant productivity gains, surpassing traditional single-beam methods, are highlighted, illustrating the transformative impact of these technologies in the field. Specifically, DOE and SLM have been instrumental in applications ranging from biocompatibility enhancement in medical implants to friction reduction in machining tools. The research showcases the capability of these technologies to intricately tailor surface properties at micro and nano scales, opening new pathways in diverse sectors such as healthcare and manufacturing.
Smart surface functionalization by laser-made micro and nanostructures is a suitable tool to maximize the value of a product and enable new properties for common materials. Despite the recent progress, the capacity to produce micro and nanoscale surface features over large areas represents a significant challenge in terms of production technology, throughput and cost, especially for components with a complex 3D geometry. In this work, we introduce multi-beam technologies able to efficiently micro/nanostructure metallic moulds with the ability to transfer micro/nanoscale morphology to complex 3D polymeric components via mass production techniques such as injection moulding. Moulded samples with replicated structures demonstrated advanced functional properties, including increased contact angle by 27°, bacteria reduction by 99.8% and decreased friction coefficient by 66% compared to the reference sample.
Suitable topography of structured surfaces may allow attaining innovative surface properties including friction reduction, superhydrophobicity, self-cleaning, anti-icing and many more. Despite a list of attractive applications of functional surfaces and demonstrated capability of lasers to produce them, the speed of laser micro and nanostructuring is still low with respect to many industry standards. In this work, we introduce a unique combination of high-energy pulsed ultrashort laser system HiLASE PERLA with up-to-date most promising multi-beam micro and nanostructuring technologies able to produce for example more than 40,000 beamlets with productivity over 1900 cm2/min.
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