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arXiv · 1904.08560

Comment on "Orientational Distribution of Free O-H Groups of Interfacial Water is Exponential"

Wei Gan·Ran-ran Feng·Hong-Fei Wang
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Abstract

In a recent letter (PRL,121,246101,2018), Sun et al. reported that combined MD simulation and sum frequency generation vibrational spectroscopy (SFG-VS) measurements led to conclusions of a broad and exponentially decaying orientational distribution, and the presence of the free O-H group pointing down to the bulk at the air/water interface. In this comment, we show that their main conclusions are based on questionable interpretation of the SFG-VS data presented in the letter [1], and are also contrary to the established data analysis and interpretations in the literature [2-5].

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Wei Gan, Ran-ran Feng, Hong-Fei Wang. 2019-04-18. Comment on "Orientational Distribution of Free O-H Groups of Interfacial Water is Exponential". https://doi.org/10.1103/physrevlett.123.099601

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