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arXiv · 1105.5791

One nanometer thin carbon nanosheets with tunable conductivity and stiffness

Andrey Turchanin·Andre Beyer·Christoph Nottbohm·Xianghui Zhang·Rainer Stosch·Alla Sologubenko·Joachim Mayer·Peter Hinze·Thomas Weimann·Armin Golzhauser
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Abstract

We present a new route for the fabrication of ultrathin (~1 nm) carbon films and membranes, whose electrical behavior can be tuned from insulating to conducting. Self-assembled monolayers of biphenyls are cross-linked by electrons, detached from the surfaces and subsequently pyrolized. Above 1000K, the cross-linked aromatic monolayer forms a mechanically stable graphitic phase. The transition is accompanied by a drop of the sheet resistivity from ~10^8 to ~10^2 kOhm/sq and a mechanical stiffening of the nanomembranes from ~10 to ~50 GPa. The technical applicability of the nanosheets is demonstrated by incorporating them into a microscopic pressure sensor

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Andrey Turchanin, Andre Beyer, Christoph Nottbohm, Xianghui Zhang, Rainer Stosch, Alla Sologubenko, Joachim Mayer, Peter Hinze, Thomas Weimann, Armin Golzhauser. 2011-05-29. One nanometer thin carbon nanosheets with tunable conductivity and stiffness. https://doi.org/10.1002/adma.200803078

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