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Low-Frequency Raman Scattering in Colliding Benzene Droplets
Kosuke Negishi1, Jun-Ya Kohno1
1Department of Chemistry, Faculty of Science , Gakushuin University , 1-5-1 Mejiro , Toshima-ku , Tokyo 171-8588 , Japan.
The Journal of Physical Chemistry. A
|September 27, 2019
Summary
Colliding liquid droplets generate multiorder stimulated Raman scattering (SRS), revealing low-frequency intermolecular motions in novel liquid states. This technique offers a new window into molecular liquid dynamics.
Area of Science:
- Physical Chemistry
- Spectroscopy
- Fluid Dynamics
Background:
- Low-frequency intermolecular motions are crucial for understanding molecular liquid structures.
- Raman spectroscopy is a key technique for elucidating these motions.
- Previous work demonstrated enhanced multiorder stimulated Raman scattering (SRS) in colliding droplets.
Purpose of the Study:
- To investigate the low-frequency intermolecular motions of liquid benzene using multiorder SRS in colliding droplets.
- To characterize the novel liquid state emerging during droplet collisions.
Main Methods:
- Generating multiorder SRS in colliding benzene droplets.
- Analyzing the low-frequency bands within the SRS spectrum.
- Utilizing the colliding droplet system to avoid Rayleigh scattering background.
Main Results:
- Multiorder SRS generated in colliding benzene droplets exhibited distinct low-frequency bands.
- These bands correspond to the intermolecular motions of a transient liquid state formed during collision.
- The method successfully measured these motions without interference from Rayleigh scattering.
Conclusions:
- Colliding droplets provide a unique platform for studying transient liquid states.
- Multiorder SRS in colliding droplets is effective for measuring low-frequency intermolecular motions.
- This approach offers new insights into the dynamics of molecular liquids.
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