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TCMS Seminar

Lecture Title "Molecular insight into nucleation behavior of supercooled water on surfaces"
Date Thursday 18 May 2017 16:00 to 17:00
Lecturer Prof. Jayant K. Singh
(Department of Chemical Engineering, IIT Kanpur)
Place

Institute for Molecular Science, South Laboratory Building, Seminar Room #408
Summary

Ice nucleation in presence of atmospheric aerosols is of great significance to Earth's climate, biological phenomena, and many research fields [1-2]. Atmospheric aerosols such as sea-salt, mineral dust, volcanic dust, soot, or some organics generally play a vital role in the formation of ice particles in the atmosphere [3].
Therefore, understanding the relevance between nucleation processes and the structure at the solid-liquid interfaces is important for studying heterogeneous nucleation. There are several experimental as well as theoretical works of heterogeneous nucleation reports the vast range of ice nucleation in the presence of atmospheric particles. [3] However, there are numerous questions related to nucleation behavior from solutions on a solid surface that are not yet addressed.

In this talk, I will present a summary of our efforts [4-5] to understand the effect of wetting states on the nucleation of supercooled water using molecular simulations. In particular, I will attempt to address the following questions: Why superhydrophobic surfaces are not always ice-phobic?  Does surface promoting nucleation invariable indicates higher adhesion? Does the presence of nanoparticle in supercooled water suppresses or enhances the nucleation rate of ice on surfaces?

References
1. Abbatt, J.; Benz, S.; Cziczo, D.; Kanji, Z.; Lohmann, U.; Möhler, O. Science 2006, 313, 1770.
2. Zhang, R.; Li, G.; Fan, J.; Wu, D. L.; Molina, M. J. Proc. Natl. Acad. Sci. U.S.A. 2007, 104, 5295.
3. Murray, B. J.; O’Sullivan, D.; Atkinson, J. D.; Webb, M. E. Chem. Soc. Rev. 2012, 41, 6519.
4. Metya, A; Singh JK; Müller-Plathe F, Phys. Chem. Chem. Phys. 2016, 18, 26796  5. Singh JK; Müller-Plathe F, Appl. Phys. Lett. 2014, 104, 021603.
Contact

Shinji SAITO
Awards & Honors International collaboration

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