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arXiv · 0908.0875

Boron Nitride Nanomesh: A template for Nano-ice

Haifeng Ma·Thomas Brugger·Simon Berner·Yun Ding·Marcella Iannuzzi·Jurg Hutter·Jurg Osterwalder·Thomas Greber
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Abstract

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.

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Haifeng Ma, Thomas Brugger, Simon Berner, Yun Ding, Marcella Iannuzzi, Jurg Hutter, Jurg Osterwalder, Thomas Greber. 2009-08-06. Boron Nitride Nanomesh: A template for Nano-ice. https://doi.org/10.1002/cphc.200900857

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