S
Sean C. O'Hern
Researcher at Massachusetts Institute of Technology
Publications - 12
Citations - 2481
Sean C. O'Hern is an academic researcher from Massachusetts Institute of Technology. The author has contributed to research in topics: Membrane & Graphene. The author has an hindex of 10, co-authored 12 publications receiving 2168 citations. Previous affiliations of Sean C. O'Hern include King Fahd University of Petroleum and Minerals.
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Journal ArticleDOI
Selective ionic transport through tunable subnanometer pores in single-layer graphene membranes.
Sean C. O'Hern,Michael S. H. Boutilier,Juan Carlos Idrobo,Yi Song,Jing Kong,Tahar Laoui,Muataz Ali Atieh,Rohit Karnik +7 more
TL;DR: The ability to tune the selectivity of graphene through controlled generation of subnanometer pores addresses a significant challenge in the development of advanced nanoporous graphene membranes for nanofiltration, desalination, gas separation, and other applications.
Journal ArticleDOI
Nanostructured materials for water desalination.
Thomas Humplik,Jongho Lee,Sean C. O'Hern,Batya Fellman,Mirza Baig,Syed Fida Hassan,Muataz Ali Atieh,Faiz-Ur Rahman,Tahar Laoui,Rohit Karnik,Evelyn N. Wang +10 more
TL;DR: This review focuses on nanostructured materials that are directly involved in the separation of water from salt as opposed to mitigating issues such as fouling and can potentially enable the development of next-generation desalination systems with increased efficiency and capacity.
Journal ArticleDOI
Selective Molecular Transport through Intrinsic Defects in a Single Layer of CVD Graphene
Sean C. O'Hern,Cameron A. Stewart,Michael S. H. Boutilier,Juan Carlos Idrobo,Sreekar Bhaviripudi,Sarit K. Das,Jing Kong,Tahar Laoui,Muataz Ali Atieh,Rohit Karnik +9 more
TL;DR: Graphene composite membranes with nominal areas more than 25 mm fabricated by transfer of a single layer of CVD graphene onto a porous polycarbonate substrate are reported, presenting the first step toward the realization of practical membranes that use graphene as the selective material.
Journal ArticleDOI
Nanofiltration across Defect-Sealed Nanoporous Monolayer Graphene
Sean C. O'Hern,Doojoon Jang,Suman Bose,Juan Carlos Idrobo,Yi Song,Tahar Laoui,Jing Kong,Rohit Karnik +7 more
TL;DR: A multiscale leakage-sealing process that exploits the nonpolar nature and impermeability of pristine graphene to selectively block defects, resulting in a centimeter-scale membrane that can separate two fluid reservoirs by an atomically thin layer of graphene.
Journal ArticleDOI
Heterogeneous sub-continuum ionic transport in statistically isolated graphene nanopores
Tarun Jain,Benjamin C. Rasera,Ricardo Jose S. Guerrero,Michael S. H. Boutilier,Sean C. O'Hern,Juan Carlos Idrobo,Rohit Karnik +6 more
TL;DR: It is shown that isolated sub-2 nm pores in graphene exhibit, in contrast to larger pores, diverse transport behaviours consistent with ion transport over a free-energy barrier arising from ion dehydration and electrostatic interactions.