Microfluid Welding
Futonics thulium fiber lasers are particularly suitable for the precise laser welding of microfluidic structures made from transparent and semi-transparent polymers. Due to the high single-mode beam quality with M² < 1.1, the laser energy can be focused very finely and introduced into the joining process in a controlled manner. In combination with a scanner system, weld seams with minimum widths of down to 50 µm can be achieved.
At the 2 µm wavelength used by Futonics, many transparent plastics, including PMMA and PC, show sufficient intrinsic absorption of the laser radiation. This enables microfluidic components to be welded without additional absorbing coatings, pigments or additives. This is particularly advantageous for applications where clean surfaces, optical transparency and low-contamination joining are essential.
The process is especially suitable for transmission welding of transparent and non-transparent polymer components. Futonics lasers enable precise, reproducible weld seams with locally confined heat input. This allows sensitive microchannels, cavities and functional structures to be joined reliably without significantly affecting the geometry or function of the microfluidic components.
Typical applications include lab-on-a-chip systems, diagnostic test systems, microfluidic cartridges, medical disposable components, analytical platforms and precise polymer joints in medical technology, biotechnology and industrial sensor technology.
Advantages of microfluidic welding with Futonics lasers
- High single-mode beam quality with M² < 1.1
- Weld seam widths down to 50 µm in combination with scanner systems
- Precise laser welding of transparent and semi-transparent polymers
- Suitable for PMMA, PC and other technical plastics
- No absorbing coatings, pigments or additives required
- Contact-free joining process with locally confined heat input
- Clean, reproducible weld seams
- Suitable for sensitive microchannels and functional structures
- Easy integration into industrial and OEM laser systems
Technical consulting for welding microfluidic components
Whether a microfluidic component can be welded with a 2 µm thulium fiber laser depends on the material, component geometry, wall thickness, weld seam design and process requirements. Futonics supports you in evaluating your application and selecting a suitable laser module for laboratory, industrial or OEM systems.
Recommended Laser
400 W Thulium Fiber Laser
- Up to 400 W continuous power
- 2 µm wavelength range
- Excellent beam quality
- Reliable industrial operation
