Regensburg 2019 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 35: 2D Materials I: Growth and Properties of Transition Metal Dichalcogenides, Phase Transitions

O 35.11: Vortrag

Dienstag, 2. April 2019, 16:30–16:45, H14

Towards Molecular-level Understanding of Ice Nucleation Inhibition at Surfaces — •Naureen Akhtar — Department of Physics and Technology, University of Bergen, P.O. Box 7803, N-5020, Bergen, Norway

The paper that I here submit for the Gerhard Ertl Young Investigator Award presents the first experimental study of the anti-icing properties of graphene and functionalized graphene (fluorinated). The paper demonstrates a completely new approach to anti-icing surfaces, defining a new class of materials, where anti-icing is achieved solely by structuring on the atomic level. The results presented in the paper demonstrate excellent anti-icing performance with freezing delays up to several hours in a high humidity environment. It presents a realistic anti-icing solution that can be implemented in practice. Furthermore the research presented in the paper introduces graphene as a new model-system for understanding ice nucleation mechanism. Finally the results and further work with this new class of material may contribute to the improvement of climate models through the understanding of the role of ice formation in clouds via seeding materials. This is because soot particles are ubiquitous aerosols in the atmosphere and graphene derivatives may serve as suitable model systems, ultimately providing data that can be incorporated in climate models where these effects are currently not taken into consideration.