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

Autor: Gan, Wei, Feng, Ran-ran, Wang, Hong-Fei
Rok vydání: 2019
Předmět:
Zdroj: Phys. Rev. Lett. 123, 099601 (2019)
Druh dokumentu: Working Paper
DOI: 10.1103/PhysRevLett.123.099601
Popis: 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].
Comment: 2 pages, 0 figures
Databáze: arXiv