1. Two-Dimensional Wetting of a Stepped Copper Surface
- Author
-
Gefen Corem, Chenfang Lin, Gil Alexandrowicz, Nadav Avidor, Andrew Hodgson, Oded Godsi, George R. Darling, Avidor, Nadav [0000-0002-3928-2493], and Apollo - University of Cambridge Repository
- Subjects
0306 Physical Chemistry (incl. Structural) ,Surface (mathematics) ,Materials science ,Pentamer ,Hydrogen bond ,General Physics and Astronomy ,chemistry.chemical_element ,02 engineering and technology ,Random hexamer ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Copper ,0104 chemical sciences ,Crystallography ,Dipole ,chemistry ,Molecule ,Wetting ,0210 nano-technology - Abstract
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.
- Published
- 2017