Wahl optoparts GmbH, a Jenoptik subsidiary based in Triptis, Germany, and Weidmann Plastics Technology AG of Rapperswil, Switzerland, have agreed to cooperate in the area of micro-optics and microfluidics. They will focus on the sale of microfluidic/optoelectronic systems to joint clients and will collaborate on developing and manufacturing new systems. The integration of optics and fluidics in a compact design is expected to have new applications in biophotonics, among other areas.