Berlin 2018 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 17: Poster Session I

DS 17.38: Poster

Dienstag, 13. März 2018, 18:15–20:15, Poster B

In-situ TEM investigation of NaCl decomposition encapsulated in graphene liquid cells — Fredrik Bräuer, •Tibor Lehnert, and Ute Kaiser — Electron Microscopy Group of Materials Science, University of Ulm, Ulm 89081, Germany

By in-situ transmission electron microscopy we investigate the decomposition process of encapsulated sodium chloride (NaCl) in a graphene liquid cell. We repeated the experiments more than 15 times and found that the actual decomposition process is always very similar. However, it was found out, that these crystals have extremely different stability times. That means the electron dose they can accept before the decomposition process starts deviates massively. This leads to the assumption, that the process is not only determined by the interaction of electron beam and ionic crystal. Due to our investigations a connection between the stability of NaCl and the chemical etching of the graphene layers could be established.