Quasi-Ice Monolayer on Atomically Smooth Amorphousat Room Temperature Observed with a High-Finesse Optical Resonator
- 13 October 2005
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 95 (16), 166104
- https://doi.org/10.1103/physrevlett.95.166104
Abstract
The structure of an monolayer bound to atomically smooth hydroxylated amorphous silica is probed under ambient conditions by near-infrared evanescent-wave cavity ring-down absorption spectroscopy. Employing a miniature monolithic optical resonator, we find sharp () and polarized () vibration-combination bands for surface OH and adsorbed , which reveal ordered species in distinct local environments. Indicating first-monolayer uniqueness, the absorption bands for adsorbed show intensity saturation and line narrowing with completion of one monolayer. Formation of the ordered monolayer likely arises from H bonding to a quasicrystalline surface OH network.
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