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Carbon nanotube quantum dot : ウィキペディア英語版 | Carbon nanotube quantum dot
A carbon nanotube quantum dot (CNT QD) is a small region of a carbon nanotube in which electrons are confined. ==Formation==
A CNT QD is formed when electrons are confined to a small region within a carbon nanotube. This is normally accomplished by application of a voltage to a gate electrode, dragging the valence band of the CNT down in energy, thereby causing electrons to pool in a region in the vicinity of the electrode. Experimentally this is accomplished by laying a CNT on a silicon dioxide surface, sitting on a doped silicon wafer. This can be done by chemical vapor deposition using carbon monoxide.〔B. Zheng et al., Nano Letters 2, 895 (2002)〕 The silicon wafer serves as the gate electrode. Metallic leads can then be laid over the nanotube in order to connect the CNT QD up to an electrical circuit.
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