Two-Dimensional Wetting of a Stepped Copper Surface

Highly corrugated, stepped surfaces present regular 1D arrays of binding sites, creating a complex, heterogeneous environment to water. Rather than decorating the hydrophilic step sites to form 1D chains, water on stepped Cu(511) forms an extended 2D network that binds strongly to the steps but brid...

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Bibliographic Details
Published in:Physical review letters 2018-02, Vol.120 (7), p.076101-076101, Article 076101
Main Authors: Lin, C, Avidor, N, Corem, G, Godsi, O, Alexandrowicz, G, Darling, G R, Hodgson, A
Format: Article
Language:English
Subjects:
Binding sites
Chemical bonds
Copper
Hydrogen bonding
Hydrogen bonds
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Summary:Highly corrugated, stepped surfaces present regular 1D arrays of binding sites, creating a complex, heterogeneous environment to water. Rather than decorating the hydrophilic step sites to form 1D chains, water on stepped Cu(511) forms an extended 2D network that binds strongly to the steps but bridges across the intervening hydrophobic Cu(100) terraces. The hydrogen-bonded network contains pentamer, hexamer, and octomer water rings that leave a third of the stable Cu step sites unoccupied in order to bind water H down close to the step dipole and complete three hydrogen bonds per molecule.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.120.076101