Fig. 6

SEM images of AgNP conductive structures on PDMS printed with (a) Single print without plasma (S1), (b) Single print with plasma (S2), (c) Single print with plasma, and immediate post-inert plasma treatment (S3), (d) Two print with plasma (S4), (e) Two times single print with plasma, and immediate post-inert plasma treatment after each print (S5), (f) Three print with plasma (S6), (g) Three times single print with plasma, and immediate post-inert plasma treatment after each print (S7), (h) Plot of average AgNP size in Ag conductive structures for samples S1 to S7.