Regensburg 2019 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 59: 2D Materials III: Nanomembranes, hBN, and Particle Interactions

O 59.3: Hauptvortrag

Mittwoch, 3. April 2019, 15:30–16:00, H16

Carbon Nanomembranes: Preparation, Properties, and Applications — •Xianghui Zhang — Faculty of Physics, Bielefeld University, 33615 Bielefeld, Germany

Carbon Nanomembranes (CNMs) are two-dimensional sheets with tailored physical and chemical properties. I will first give an overview of the preparation of CNMs and their mechanical, optical and electronic characteristics. Then I will present several recent findings on the structure of CNMs using surface-enhanced Raman spectroscopy and scanning probe microscopy, which make CNMs of interest for applications in energy storage and membrane separations. Finally, I will show the realization of all-carbon capacitors composed of CNMs as dielectrics sandwiched between two graphene electrodes, and will further address how the CNM allows for a fast yet selective transport of water and helium through sub-nanometer channels.

[1] A. Turchanin, A. Gölzhäuser, Adv. Mater. 28, 6075 (2016) [2] X. Zhang, M. Mainka, et al., Langmuir, 34, 2692 (2018) [3] X. Zhang, E. Marschewski, et al., ACS Nano, 12, 10301 (2018) [4] Y. Yang, P. Dementyev, et al., ACS Nano, 2018, 12, 4695 (2018)