A method of controllable nano-cut graphene
A graphene and nanotechnology, applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problem of poor edge roughness and chiral control, lack of good control of carbon nanotube chirality, and ineffective graphene shape Control and other issues to achieve edge-accurate results
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[0028] The present invention will be further described below by two embodiments and accompanying drawing, will utilize nano-knife to carry out detailed implementation method introduction to two smooth cuttings that graphene is carried out, in addition to cutting a piece of graphene of irregular shape into parallelogram The embodiment of the present invention is briefly introduced and illustrated with accompanying drawings.
[0029] 1. Depositing carbon on the tip of the tungsten tip to make a nanoknife
[0030] A controllable nano-cut graphene method provided by the present invention is implemented in a transmission electron microscope, figure 1 It is a schematic diagram of the cutting process. The gold electrode is fixed, and the graphene is adhered to the edge of the gold wire electrode. The nanoknife made of tungsten needle tip and carbon structure can move in three dimensions, and the minimum step size can reach the nanometer scale. On the electrodes at both ends A bias v...
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