Nanoscale mass transport across two-dimensional materials
Two-dimensional (2D) nanoconstrictions enable ballistic permeation of molecules, yielding orders of magnitude higher permeances compared to conventional membranes. Recent advances in synthesis and handling of 2D materials have enabled the study of such constrictions on atomically-thin membranes. Two prominent examples of such membranes, based on graphene and 2D polymers, will be described in terms of fabrication challenges, flow characteristics and technological implications.