Extended Data Fig. 6: The uniformity comparison of the size and density of the nanoporous graphene grown on copper foil.
From: Cascaded compression of size distribution of nanopores in monolayer graphene
a,b, The mapping of D to G ratio and 2D to G ratio of sample #809 after transfer to SiO2/Si, respectively. The dashed blue line in a shows a copper grain boundary before the transfer. c,d, The mapping of D to G ratio and 2D to G ratio of sample #817, respectively. The preparation condition of sample #817 involves adding an extra 1-min shrinkage after the same conditions of sample #809. As a result, the D to G ratio of #sample 817 reflects the density of the nanopores of sample #809, and the D to G ratio difference between samples #809 and #817 indicates the variation of the nanopore size of sample #809.
