| 摘要 |
A method for sharpening a nanotube including the steps of: connecting the base end portion of a nanotube to an electrode with the tip end portion of the nanotube protruded from the electrode; connecting the tip end portion of the nanotube to another electrode; applying a voltage between the electrodes so as to cause an electric current to flow in the middle portion of the nanotube which is located between the two electrodes; evaporating constituent atoms of the nanotube layer by layer from a evaporation starting region, which is located in the middle region of the nanotube (and can be a crystal defect region, or a curved portion), by the heat generated by the electric current, thus reducing the diameter of the evaporation starting region; and cutting the evaporation starting region that has the reduced diameter, thus forming a sharpened end on the nanotube. |
