Nature Nanotechnology, 2017, 12(6), 546-550 Jijo Abraham, Kalangi S. Vasu, Christopher D. Williams, Kalon Gopinadhan, Yang Su, Christie T. Cherian, James Dix, Eric Prestat, Sarah J. Haigh, Irina V. Grigorieva, Paola Carbone, Andre K. Geim & Rahul R. Nair Graphene oxide membranes show exceptional molecular permeation properties, with promise…