title: Selective molecular transport through intrinsic defects in a single layer of CVD graphene.
abstract: We report graphene composite membranes with nominal areas more than 25 mm(2) fabricated by transfer of a single layer of CVD graphene onto a porous polycarbonate substrate. A combination of pressure-driven and diffusive transport measurements provides evidence of size-selective transport of molecules through the membrane, which is attributed to the low-frequency occurrence of intrinsic 1-15 nm diameter pores in the CVD graphene. Our results present the first step toward the realization of practical membranes that use graphene as the selective material.
authors.affiliation: Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States.
authors.forename: Sean C
authors.initials: SC
authors.lastname: O'Hern
authors.forename: Cameron A
authors.initials: CA
authors.lastname: Stewart
authors.forename: Michael S H
authors.initials: MS
authors.lastname: Boutilier
authors.forename: Juan-Carlos
authors.initials: JC
authors.lastname: Idrobo
authors.forename: Sreekar
authors.initials: S
authors.lastname: Bhaviripudi
authors.forename: Sarit K
authors.initials: SK
authors.lastname: Das
authors.forename: Jing
authors.initials: J
authors.lastname: Kong
authors.forename: Tahar
authors.initials: T
authors.lastname: Laoui
authors.forename: Muataz
authors.initials: M
authors.lastname: Atieh
authors.forename: Rohit
authors.initials: R
authors.lastname: Karnik
mesh_terms: D005740:Gases / Q000737:chemistry; D006108:Graphite / Q000737:chemistry*; D008422:Materials Testing; D008567:Membranes, Artificial; D016062:Porosity; D011312:Pressure
chemical_list: D005740:Gases; D008567:Membranes, Artificial; D006108:Graphite