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Dynamics of water between graphene and mica

QUICK INFORMATION
Type
Seminar
Start Date
20-11-2018 09:00
End Date
20-11-2018 10:00
Location
Room 500 - 501, Central Building
Speaker's name
Edwin DOLLEKAMP
Speaker's institute
University of Twente in Enschede / Netherlands
Contact name
Anaïs Fernandes
Host name
Marine Cotte - Tobias Schulli
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The behavior of water under confinement is of utmost importance for the field of electrocatalysis, nanofluidics and lubrication. The dynamics of water under confinement are significantly different as compared to bulk water. Experimental knowledge of confined water is challenging to obtain due to the confined nature of the water, and therefore limited access to the water structures. With the discovery of the two-dimensional material graphene in combination with scanning probe microscopy, a new approach to in-situ study confined water layers was born. The mechanical properties of graphene like its flexibility, impermeability and atomic thickness make it a perfect cover to study the water molecules. In this seminar, I cover the dynamic properties of water on mica, covered with a graphene coating. Different dynamics are studied, e.g. electrolysis of the confined water molecules to hydrogen nanobubbles, the influence of charges on the graphene, and the influence of the confined molecules on the mechanical and electrical properties of the graphene. The studies expand our experimentally obtained knowledge of confined water which will find applications in future devices.

Visitors from off-site please contact Anaïs Fernandes tel +33 (0)438 88 19 92 to arrange for a gate pass.
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If you do not receive a confirmation e-mail, please contact us by phone.