Microfluidics, or lab-on-chip devices, are dealing with the precise control and manipulation of fluids that are geometrically constrained to a small, typically sub-millimeter scale. These devices integrate one or several functions into a single chip. Microfluidics is a broader term that also describes mechanical flow control devices, including pumps and valves as well as sensors such as flow meters and viscometers. In the case of micro total analysis systems (µTAS), an entire sequence of lab processes is integrated into a single chip that performs a full chemical analysis. The term "lab-on-a-chip" generally describes the scaling of single or multiple lab processes down to chip format.

 A key step in the fabrication of the final lab-on-chip and/ or microfluidic devices is the enclosure of the channels by a cover plate or layer. This bonding or lamination process is a very important procedure in the design and fabrication of polymer based devices. Various bonding or lamination processes including thermal bonding (such as SU-8 bonding) and lamination methods have been developed. 
EV Group provides solutions for R&D and manufacturing for a broad range of materials used for these bonding processes such as COC, SU-8, PMMA, etc.

Individual process steps supported by EV Group:

  • Fusion bonding of polymers
  • Intermediate layer bonding
  • Lamination

Please see our related products EVG Nanoimprint Lithography Systems (UV-NIL, µCP)EVG Bonding Systems and EVG®820 Lamination System for detailed information.


Cross section of a structured PMMA bonded with another PMMA.
Courtesy of Waseda University.