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Controlled formation of closed-edge nanopores in graphene
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He, Kuang, Robertson, Alex W., Gong, Chuncheng, Allen, Christopher S., Xu, Qiang, Zandbergen, Henny, Grossman, Jeffrey C., Kirkland, Angus I. and Warner, Jamie H. (2015) Controlled formation of closed-edge nanopores in graphene. Nanoscale, 7 (27). pp. 11602-11610. doi:10.1039/c5nr02277k ISSN 2040-3364.
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Official URL: http://dx.doi.org/10.1039/c5nr02277k
Abstract
Dangling bonds at the edge of a nanopore in monolayer graphene make it susceptible to back-filling at low temperatures from atmospheric hydrocarbons, leading to potential instability for nanopore applications, such as DNA sequencing. We show that closed edge nanopores in bilayer graphene are robust to back-filling under atmospheric conditions for days. A controlled method for closed edge nanopore formation starting from monolayer graphene is reported using an in situ heating holder and electron beam irradiation within an aberration-corrected transmission electron microscopy. Tailoring of closed-edge nanopore sizes is demonstrated from 1.4–7.4 nm. These results should provide mechanisms for improving the stability of nanopores in graphene for a wide range of applications involving mass transport.
Item Type: | Journal Article | ||||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||
Journal or Publication Title: | Nanoscale | ||||||||||
Publisher: | Royal Society of Chemistry | ||||||||||
ISSN: | 2040-3364 | ||||||||||
Official Date: | 21 July 2015 | ||||||||||
Dates: |
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Volume: | 7 | ||||||||||
Number: | 27 | ||||||||||
Page Range: | pp. 11602-11610 | ||||||||||
DOI: | 10.1039/c5nr02277k | ||||||||||
Status: | Peer Reviewed | ||||||||||
Publication Status: | Published | ||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||
Copyright Holders: | The Royal Society of Chemistry | ||||||||||
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