Inkjet is a digital printing technique that enables the contactless and extremely precise application of various fluids (inks) as droplets. Fraunhofer ISE has many years of experience in the development of inkjet printing processes in which nano-scale metal particles, perovskites, waxy electroplating and etching barriers (including UV-curing ones) and dopants are printed with maximum resource efficiency and precision. For adequate wetting of inks on substrates, Fraunhofer ISE offers the complete portfolio for the characterization of media with regard to viscosity and surface tension. By using inkjet printers in glove boxes, the wetting environment can be adapted. Fraunhofer ISE also offers pre-processes for the activation of surfaces, for example using plasma.