Selective Ionic Transport through Tunable Subnanometer Pores in Single-Layer Graphene Membranes O'Hern, Sean C. ; Boutilier, Michael S. H. ; Idrobo, Juan-Carlos ; Song, Yi ; Kong, Jing ; Laoui, Tahar ; Atieh, Muataz ; Karnik, Rohit Abstract Publication: Nano Letters Pub Date: March 2014 DOI: 10.1021/nl404118f Bibcode: 2014NanoL..14.1234O