Fig. 2From: Uniformly Nanopatterned Graphene Field-Effect Transistors with Enhanced PropertiesScanning electron microscopy (SEM) images. a An AAO template (top view). b A tilted AAO membrane with a ~200-nm thickness. c Histogram of the neck width (w) between AAO pores with an average neck width of 29.7 nm (std. dev. ±2.6 nm)Back to article page