Rapid and inexpensive method for fabrication of multi-material multi-layer microfluidic devices

The vast majority of polymeric microfluidic devices that have been developed so far feature the use of a single or two material of construction. This is mainly due to the difficulty in integrating multiple materials into these devices using conventional microfabrication techniques such as photolithography, soft lithography or hot embossing either due to mismatch in the processing conditions or due to poor bonding between the materials. Nevertheless, integration of multiple materials into microfluidic devices can enable new and interesting functionalities.