Using nanoporous InRedox AAO substrates as a support for single layer graphene, MIT Professor Rohit Karnik and team, including researchers from ORNL, have demonstrated the first molecular sieving across atomically thin nanoporous graphene on a centimeter scale. By implementing a polished AAO support beneath a single layer graphene sheet, they were able to isolate small defects and minimize leakage through large defects. The resultant transport characteristics confirmed the potential of such AAO supported nanoporous graphene membranes for gas separation in the real world applications where macroscale separators are required.

Molecular Sieving Across Centimeter-Scale Single-Layer Nanoporous Graphene Membranes
Michael S. H. Boutilier, Doojoon Jang, Juan-Carlos Idrobo, Piran R. Kidambi, Nicolas G. Hadjiconstantinou, and Rohit Karnik, ACS Nano Article ASAP, June 2017