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Updated: Sep 15, 2025

Author Spotlight: Unveiling the Potential of VSFG Microscopy in Studying Mesoscopically Heterogeneous Self-Assembled Structures
Published on: December 1, 2023
Quantitative consistency between the intensity and phase-resolved sum frequency generation vibrational spectra of the
Li Zhang1,2, Bo-Jun Zhao1,2, Jin-Hua Jiang3,4
1Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang Province 310058, China.
Abstract:
We report the first sub-1 cm-1 resolution high-resolution broadband sum-frequency generation vibrational spectroscopy ssp intensity spectra of the air/neat-water interface across the 1500-3900 cm-1 spectral range. Utilizing a direct fitting approach, we reconstruct the phase-resolved spectra that quantitatively agree with previously reported phase-resolved measurements while revealing additional spectral features and phase information. This combined analysis advances molecular-level understanding of water's vibrational dynamics and orientation at the interface. Our results establish a robust framework linking intensity and phase-resolved SFG data, providing a foundation for future polarization and experimental configuration dependent studies aimed at resolving ongoing debates regarding interfacial water structure.
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