Fig. 4: Tunable pixel size and printed interdigitated nanoelectrodes.
From: High-resolution combinatorial patterning of functional nanoparticles
a Tuning the pixel size (the number of NPs on each spot) by adjusting the charge potential. From left to right, they are KPFM potential mapping, corresponding AFM height mapping, SEM, and PL images (inset) of CsPbBr3 QD patterns. Scale bar, 500 nm. b The near-linear relationship between the average number of NPs on each spot and the charge potential. Error bars represent the standard deviation of the NPs numbers on 100 spots of each potential. c KPFM potential image and AFM height mapping of interdigitated nanoelectrode printed with 10-nm Au NPs. Scale bar, 1 μm. d Corresponding SEM of the interdigitated nanoelectrode and an enlarged part, showing a finger width of 150 nm with variation less than 10 nm. Scale bar, 1 μm (left), and 200 nm (right).
