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Updated: May 17, 2026

A Microfluidic Approach for the Study of Ice and Clathrate Hydrate Crystallization
Published on: August 18, 2022
Structure, spectroscopy and dynamics of layered H2O and CO2 ices
Myung Won Lee1, Nuria Plattner, Markus Meuwly
1Department of Chemistry, University of Basel, Klingelbergstrasse 80, 4056 Basel, Switzerland.
Abstract:
Molecular dynamics simulations of structural, spectroscopic and dynamical properties of mixed water-carbon dioxide (H(2)O-CO(2)) ices are discussed over temperature ranges relevant to atmospheric and astrophysical conditions. The simulations employ multipolar force fields to represent electrostatic interactions which are essential for spectroscopic and dynamical investigations. It is found that at the water/CO(2) interface the water surface acts as a template for the CO(2) component. The rotational reorientation times in both bulk phases agree well with experimental observations. A pronounced temperature effect on the CO(2) reorientation time is observed between 100 K and 200 K. At the interface, water reorientation times are nearly twice as long compared to water in the bulk. The spectroscopy of such ices is rich in the far-infrared region of the spectrum and can be related to translational and rotational modes. Furthermore, spectroscopic signatures mediated across the water/CO(2) interface are found in this frequency range (around 440 cm(-1)). These results will be particularly important for new airborne experiments such as planned for SOFIA.
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