New Information on Water Interfacial Structure Revealed by Phase-Sensitive Surface Spectroscopy
- 2 February 2005
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 94 (4), 046102
- https://doi.org/10.1103/physrevlett.94.046102
Abstract
A phase-sensitive sum-frequency vibrational spectroscopic technique is developed to study interfacial water structure of water/quartz interfaces. Measurements allow deduction of both real and imaginary parts of the surface nonlinear spectral response, revealing an unprecedentedly detailed picture of the net polar orientations of the water species at the interface. The orientations of the icelike and liquidlike species appear to respond very differently to the bulk change indicating the existence of different surface sites on quartz with different deprotonation values.
Keywords
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