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Atomic structure and dynamics of self-limiting sub-nanometer pores in monolayer WS2

Abstract:

We reveal a self-limiting mechanism during the formation of a specific type of circular nanopore in monolayer WS2 that limits its diameter to sub-nm. A single W atom vacancy (triangular nanopore) is transformed into the self-limiting nanopore (SLNP) through the atomic restructuring of S atoms around the area, reducing the number of dangling bonds at the nanopore edge by shifting them further in-plane with W-W bonding instead. Bond rotations in WS2 help accommodate the electron beam induced at...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Accepted Manuscript

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Publisher copy:
10.1021/acsnano.8b07051

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Institution:
University of Oxford
Division:
MPLS Division
Department:
Materials
Role:
Author
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Institution:
University of Oxford
Division:
MPLS Division
Department:
Materials
Oxford college:
St Cross College
Role:
Author
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Funding agency for:
Warner, JH
Publisher:
American Chemical Society Publisher's website
Journal:
ACS Nano Journal website
Volume:
12
Issue:
11
Pages:
11638–11647
Publication date:
2018-10-30
Acceptance date:
2018-10-22
DOI:
EISSN:
1936-086X
ISSN:
1936-0851
Pubs id:
pubs:936611
URN:
uri:34cbaf6b-856f-4a0e-b434-d2839567da11
UUID:
uuid:34cbaf6b-856f-4a0e-b434-d2839567da11
Local pid:
pubs:936611

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