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Highlights

Graphene oxide windows for in situ environmental cell photoelectron spectroscopy


We develop a simple environmental cell with graphene oxide windows that are transparent to low-energy electrons (down to 400 eV), and demonstrate the feasibility of X-ray photoelectron spectroscopy on samples such aqueous salt solution.
Kolmakov et al., Nature Nanotechnology, 6, 651 (2011).
 

X-ray photoelectron spectroscopy generally require high-vacuum conditions. The state-of-the-art approach to increase the base pressure up to ambient condition relies on unique and expensive apparatus sophisticated differentially pumped electron lenses. We develop a simple environmental cell with graphene oxide windows that are transparent to low-energy electrons and demonstrate the feasibility of XPS measurements on model samples such aqueous salt solution placed on the back side of a window. These proof-of-principle results show the potential of using graphene oxide, graphene and other emerging ultrathin membrane windows.
for the fabrication of low-cost, single-use environmental cells compatible with commercial X-ray and Auger microprobes as well as scanning or transmission electron microscopes.

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Graphene oxide windows for in situ environmental cell photoelectron spectroscopy. A. Kolmakov, D. A. Dikin, L. J. Cote, J. Huang, M. Kazemian Abyaneh, M. Amati, L. Gregoratti, S. G√ľnther & M. Kiskinova. Nature Nanotechnology, Published online (2011)

 

Last Updated on Wednesday, 04 January 2012 14:04