Fig. 2

SEM images of AgNP conductive structures (two times single print with plasma and immediate post-inert plasma treatment after each print) on PDMS printed with a plasma voltage of (a) 11Â kV, (b) 14Â kV, (c) 17Â kV, (d) 20Â kV, (e) 23Â kV, (f) Plot of average AgNP size in Ag conductive structures for samples printed with a plasma voltage from 11 to 23Â kV.