Laser Micro Processing

Our modern equipment and in-depth expertise enable applied research and precise micro and fine machining with (ultra-)short pulse lasers for applications in mechanical engineering, plant engineering, vehicle and equipment manufacturing, as well as in biotechnology and medical technology. We process almost all materials – including polymers, metals, ceramics, transparent and biocompatible materials – and create 3D and surface structures in the µm range. Typical applications include microdrilling, high-precision cutting, microstructuring for adjusting surface properties, interface optimization, and laser-based cleaning and fine welding of various material combinations.

A key focus is optical laser process characterization using high-speed cameras, which provides detailed insights into fast-moving processes and supports our process development.

We accompany our partners from initial feasibility studies through development to series production and efficiently contribute our many years of experience to industrial and publicly funded projects.

High precision cutting of quartz glass wafers.
© Fraunhofer IWS
High precision cutting of quartz glass wafers.
Tailored, laser-generated reservoirs for lifetime lubrication in high-performance ceramic bearings.
© Fraunhofer IWS
Tailored, laser-generated reservoirs for lifetime lubrication in high-performance ceramic bearings.

Laser Micro Cutting

  • Plastic films (e. g. PDMS, PS, PLA) for the production of microfluidics for lab-on-a-chip systems
  • Teflon impression masters for imprint technology and microfluidic applications
  • Temperature-sensitive solder foils and reactive multilayers for joining applications
  • Material composites, e. g. enameled metallic components for the watch industry, electrode material from battery technology or fiber composites for lightweight construction applications
  • Semiconductor and wide-bandgap semiconductor wafers for electronic industry
     

Laser Micro Drilling

  • Nozzle configurations
  • Apertures for optical and analytical applications
  • Electrical vias in ceramic and semiconductor substrates
  • Drilling and perforating of plastic foils for microfluidic applications
     

Laser Structuring

  • Customized surface structures increase joint strength, e. g. for hybrid material combinations based on fiber-reinforced plastics in combination with processes such as thermal spraying, plastic injection molding, laser direct joining or adhesive bonding. More information at: Technologies for modern lightweight construction
  • Surface structuring, e. g. optimization of production of structures for guiding cell growth and textured surfaces to improve the performance of battery cells and fuel cells
  • Shaping by material removal for the production of molding and cutting tools made of hard materials such as ceramics or hard metals
Investigations into the cleaning of historical, fire-damaged enamel dials.
© Fraunhofer IWS
Investigations into the cleaning of historical, fire-damaged enamel dials.
Decorative, selective ablation of carbon layer with smallest details of approx. 20 µm (Lange Uhren GmbH)
© A. Lange & Söhne
Decorative, selective ablation of carbon layer with smallest details of approx. 20 µm (Lange Uhren GmbH)
The novel process of combining laser irradiation and subsequent hot pressing allows, among other things, the production of corrugated board.
© Fraunhofer IWS
The novel process of combining laser irradiation and subsequent hot pressing allows, among other things, the production of corrugated board.

Laser Decoating and Cleaning

  • Separation of thin film systems in the "scribe process" for thin film electronics and thin film photovoltaics 
  • Local, selective decoating of components for joint preparation during welding and bonding or in case of defective coatings
  • Laser micromarking of components
  • Laser cleaning for technical and restoration applications
    • Technical laser cleaning: More information at: Fraunhofer-Business Area Cleaning
    • Restorative laser cleaning of art and cultural objects
      • Laser-based cleaning of art and cultural objects made of wood, metal, stone, polymers, textiles, material composites, etc.
      • Selective removal of patina, environmental and use-related contamination
      • Enhanced competences for the preservation of cultural heritage through cooperation in the FALKE - Research Alliance Cultural Heritage
  • Decorative design by ablation of transparent, blue carbon layers on components of high-quality mechanical watches

Laser Functionalization and Modification

  • Generation of functional groups by laser irradiation under reactive gas atmosphere
  • Excitation of polymerization of monomers
     

High-speed Camera Technology

  • Process analysis on highly dynamic processes such as remote laser cutting, rapid prototyping and laser welding
     

Laser-based Joining of Paper

  • Innovative joining technology without the use of adhesives or other foreign substances
  • For recyclable, sustainable packaging and paper products
  • Laser irradiation modifies the paper surface, enabling direct sealing of the paper