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Orientation and Motion of Water Molecules at Air/Water Interface

Wei Gan·Dan Wu·Zhen Zhang·Hong-fei Wang
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Abstract

Analysis of SFG vibrational spectra of OH stretching bands in four experimental configurations shows that orientational motion of water molecule at air/water interface is libratory within a limited angular range. This picture is significantly different from the previous conclusion that the interfacial water molecule orientation varies over a broad range within the vibrational relaxation time, the only direct experimental evidence for ultrafast and broad orientational motion of a liquid interface by Wei et al. [Phys. Rev. Lett. 86, 4799, (2001)] using single SFG experimental configuration.

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Wei Gan, Dan Wu, Zhen Zhang, Hong-fei Wang. 2005-08-22. Orientation and Motion of Water Molecules at Air/Water Interface. https://doi.org/10.1360/cjcp2006.19(1).20.5

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