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arXiv · 1012.0651

Calibrating the atomic balance by carbon nanoclusters

Fengqi Song·Xuefeng Wang·Rebecca C. Powles·Longbing He·Nigel A. Marks·Shifeng Zhao·Jianguo Wan·Zongwen Liu·Jianfeng Zhou·Simon Ringer·Min Han·Guanghou Wang
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Abstract

Carbon atoms are counted at near atomic-level precision using a scanning transmission electron microscope calibrated by carbon nanocluster mass standards. A linear calibration curve governs the working zone from a few carbon atoms up to 34,000 atoms. This linearity enables adequate averaging of the scattering cross sections, imparting the experiment with near atomic-level precision despite the use of a coarse mass reference. An example of this approach is provided for thin layers of stacked graphene sheets. Suspended sheets with a thickness below 100 nm are visualized, providing quantitative measurement in a regime inaccessible to optical and scanning probe methods.

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Fengqi Song, Xuefeng Wang, Rebecca C. Powles, Longbing He, Nigel A. Marks, Shifeng Zhao, Jianguo Wan, Zongwen Liu, Jianfeng Zhou, Simon Ringer, Min Han, Guanghou Wang. 2010-12-03. Calibrating the atomic balance by carbon nanoclusters. https://doi.org/10.1063/1.3284498

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