We as Fusion Bionic offer a unique approach to improve the surface performance of products and components by means of laser surface functionalization. Our technical approach is inspired by natural surfaces such as the lotus leaf, shark skin, collembola and the morpho butterfly which exhibit advanced surface functionalities such as self-cleaning, anti-icing, anti-bacterial, decoration, drag reduction and many more. Fusion Bionic transfers these versatile effects to technical surfaces by means of laser-based surface functionalization. 

Laser surface functionalization, an alternative or add-on to well-established coating solutions, enables a change of the surface properties of almost any material surfaces through a selective change of the surface topography. The modification of the surface is realized through high-speed laser processing which introduces well-defined surface patterns with micro- and nanometer resolution. 

Why Lasers? 

Lasers have the possibility to deliver high precision beams on the surface of materials in order to create unique surface properties. Differently from photolithographic or coating techniques, laser technologies offers several advantages, in detail: 

  • non-contact processing 
  • precise energy deposition 
  • flexibility in surface design 
  • low environmental impact. 

While several laser approaches are already available at industrial scale, Fusion Bionic offers a completely different solution called Direct Laser Interference Patterning (DLIP) as a new standard for surface functionalization.  

What is Direct Laser Interference Patterning? 

In Direct Laser Interference Patterning, or short DLIP, laser beams are combined in a controlled manner to create a well-defined interference pattern within the laser beam. The generated interference pattern is typically much smaller than the laser beam itself with typical feature resolutions in the range between 200 nm and 30 µm. Due to the interference effect, areas of high intensity (interference maxima) and zero intensity (interference minima) are available within the laser beam. During processing, the materials surface is treated only in the intensity maxima position, leaving the rest unaffected.  

Our DLIP approaches offer several advantages with respect to conventional laser techniques: 

  • Deterministic structures with nano- and micrometer resolution 
  • Unprecedented process throughput up to 0.9 m²/min 
  • High degree of different surface structures  

What structures are possible using the DLIP technology? 

Almost any material is treatable using our DLIP technology solutions, including metals, polymers, ceramics, composites, coatings and glass. The available surface topographies ranges from single scale structures such as line-like, dot-like and cross-like configurations to more complex hierarchical surface structures combining different length scales.

Each of the surface structures have a unique influence on the surface performance, consequently leading to surface improvements such as anti-icing, enhanced biocompatibility or a well-defined surface decoration

A stainless steel cube functionalized through Fusion Bionic solutions.

Most of the conventional laser sources such as short and ultrashort pulse lasers are compatible with the DLIP technology, making the texturing process burr-free and achieving less heat generation. Fusion Bionic offers various DLIP hardware solutions through our patented compact modules, which can be integrated in existing machines with no need of internal optical adjustments. Our product series is compatible with most of the CNC machines and on perspective also combinable with industrial robotic arms and Roll-to-Roll solutions

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