Extended Data Fig. 7: Diametric evolution towards the designed asymptotic value for cascaded compression based on our modelling.
From: Cascaded compression of size distribution of nanopores in monolayer graphene
a,b, Nanopore density versus diameter distribution after different cycles of compression. The starting distributions (0 cycles) (\({d}_{{\rm{peak}}}=0.2\,{\rm{nm}},\,\widetilde{\sigma }=0.4\)) in our experiments are also log-normal distributions and are the same for a and b. After several compression cycles, such a log-normal distribution becomes a left-skewed distribution with total density increasing. The designed asymptotic values (d∞) are 0.8 nm and 0.6 nm, respectively, for a and b by tuning the compression factor from 0.750 to 0.667. c,d, The corresponding plots of nanopore density versus diameter of a and b in logarithmic coordinates. The high nanopore density with a slope of 0.1 or 0.05 nm dec−1 indicates high selectivity and permeance in these nanoporous graphene membranes.
