期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 126, 期 29, 页码 5507-5512出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcb.2c034145507J
关键词
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资金
- JSPS KAKENHI [19K05391, 22K05026]
- Ministry of Education Culture, Sports, Science, and Technology, Japan (MEXT)
In this study, a new optical cavity method is developed to extend the applicability of SRS measurement to liquids with low viscosity or low interfacial tension. By observing the low-frequency modes of liquid benzene, the study reveals that SRS occurs locally with respect to the droplet size. This method is of great significance for the study of liquid structures based on vibrational spectroscopy.
Stimulated Raman scattering (SRS) in a liquid droplet enhances the Raman scattering intensity through optical resonances. We have previously used a pendant drop at the tip of a capillary as the Raman-enhancing medium. In this study, we develop a new optical cavity for SRS measurement that consists of a spherical shell of organic liquid. This enables us to extend the applicability of the pendant-drop SRS method to liquids with low viscosity or low interfacial tension. This method is used to observe low-frequency modes of liquid benzene. The results indicate that the SRS emerges locally with respect to the drop size. The developed method extends the study of liquid structures based on vibrational spectroscopy.
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