Printable electronics may be defined as the use of printing technologies to fabricate electronic devices. This is of interest to the market of electronic devices because it promises much lower cost fabrication for simple devices like RFIDs than conventional processes and it can also be used to create novel devices such as flexible displays and solar cells. However, the printing of conductive organic polymer or nanometallic inks is a challenge because of its complex behavior during the printing process. Most printing processes are accompanied with complex flows such as converging flow, e.g. in inkjet printing, which leads to unexpected instability of material. During the Inkjet printing of nanodispersions, for example, aggregation of particles take place and leads to clogging of the inkjet nozzle even if the dispersion is well stabilized at rest.
Our study focuses on:
- Rheology and flow of fluids used in printed electronics applications as relevant in printing operations.
- Stability and flow-induced aggregation of nanodispersions during printing operations in relation to the quality of printed or coated electronic devices.
- Fabrication of electronic devices by printing methods.