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Two types of novel nanocarbons with a mushroom shape were found in commercial glassy carbon powder. Both types of nanocarbons have ca. 2μm length and ca. 0.5μm diameter. One has a conical tip, and the other a pyramidal tip. Electron diffraction studies revealed that the former is made from helically stacked graphitic cones, and the latter from graphitic cups stacking to each other. These nanocarbons...
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