Water molecular arrangement at air/water interfaces probed by atomic force microscopy
| Autor: | E. F. de Souza, Omar Teschke |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Kelvin probe force microscope
Range (particle radiation) Atomic force microscopy Plane (geometry) Chemical physics Chemistry Electrostatic force microscope General Physics and Astronomy Molecule Conductive atomic force microscopy Physical and Theoretical Chemistry Atomic physics Non-contact atomic force microscopy |
| Zdroj: | Chemical Physics Letters. 403:95-101 |
| ISSN: | 0009-2614 |
| DOI: | 10.1016/j.cplett.2004.12.063 |
| Popis: | Different points along hydrophobic surfaces like air bubble interfaces in water when probed by atomic force microscope tips reveal distinct behaviors. At some points along the interface the tip suffers a strong attraction within a range of ∼250 nm away from the interface plane; at other points the interface exerts a medium range repulsive force growing stepwise as the tip approaches the interface plane; consequently, the hydrophobic force is a strong function of position. To explain these results, we propose that the water interface structure is formed by a network of nanosized hydrogen-bond connected cages of water molecules of different sizes. |
| Databáze: | OpenAIRE |
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