Journal
NATURE COMMUNICATIONS
Volume 5, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms5193
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Funding
- Danish Research Agency
- Strategic Research Council
- Villum Foundation
- Carlsberg Foundation
- Lundbeck Foundation
- European Research Council through an Advanced ERC grant
- Haldor Topsoe A/S
- DOE-BES, the Division of Chemical Sciences [DE-FG02-05ER15731]
- Air Force Office of Scientific Research under a Basic Research Initiative grant [AFOSR FA9550-12-1-0481]
- NSF
- Department of Energy's Office of Biological and Environmental Research located at PNNL
- US Department of Energy, Office of Science [DE-AC02-06CH11357, DE-AC02-05CH11231]
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The adhesion of water to solid surfaces is characterized by the tendency to balance competing molecule-molecule and molecule-surface interactions. Hydroxyl groups form strong hydrogen bonds to water molecules and are known to substantially influence the wetting behaviour of oxide surfaces, but it is not well-understood how these hydroxyl groups and their distribution on a surface affect the molecular-scale structure at the interface. Here we report a study of water clustering on a moire-structured iron oxide thin film with a controlled density of hydroxyl groups. While large amorphous monolayer islands form on the bare film, the hydroxylated iron oxide film acts as a hydrophilic nanotemplate, causing the formation of a regular array of ice-like hexameric nanoclusters. The formation of this ordered phase is localized at the nanometre scale; with increasing water coverage, ordered and amorphous water are found to coexist at adjacent hydroxylated and hydroxyl-free domains of the moire structure.
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