Physics – Condensed Matter – Materials Science
Scientific paper
2009-08-06
ChemPhysChem 2010, 11, 399
Physics
Condensed Matter
Materials Science
4 figures
Scientific paper
10.1002/cphc.200900857
Using variable temperature scanning tunneling microscopy and dI/dz barrier height spectroscopy, the structure of water on h-BN/Rh(111) nanomesh has been investigated. Below its desorption temperature, two distinct phases of water self-assemble within the 3.2 nm unit cell of the nanomesh. In the 2 nm holes, an ordered phase of nano-ice crystals with about 40 molecules is found. The ice crystals arrange in a bilayer honeycomb lattice, where the hydrogen atoms of the lower layer point to the substrate. The phase on the 1 nm wires, is a low density gas phase, which is characterized by contrast modulations and streaky noise in the STM images. Tunneling barrier measurements infer the proton positions in the nano-ice clusters.
Berner Simon
Brugger Thomas
Ding Yun
Greber Thomas
Hutter Jürg
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