Development of plasma-assisted inkjet printing and demonstration for direct printing of conductive silver line

Novel plasma-assisted inkjet printing, where inks during flight and after landing on a substrate are irradiated by atmospheric-pressure nonequilibrium plasma, is developed as a rapid one-step process without any pre-/post-treatments. A silver line with good electrical conductivity was fabricated on a polyimide. Compared with heat treatment, the line shows lower electrical resistivity and a narrower line width even with a much shorter treatment time.