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A design method for tailoring-induced spontaneous curling of graphene to form carbon nanocones

A carbon nanocone, design method technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of high energy consumption, low yield, CNC structure defects, etc. Low, high-yield effects

Inactive Publication Date: 2016-04-20
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

However, there are many defects in this method for obtaining CNC: the yield is low, and less than 20% of the carbon is converted into CNC; the reaction temperature is high (≥2000° C.), and the energy consumption is large; Get a CNC with a certain cone angle (20°, 40°, 60°)

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  • A design method for tailoring-induced spontaneous curling of graphene to form carbon nanocones
  • A design method for tailoring-induced spontaneous curling of graphene to form carbon nanocones
  • A design method for tailoring-induced spontaneous curling of graphene to form carbon nanocones

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Embodiment Construction

[0019] The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments.

[0020] Carbon nanocones have attracted extensive attention from scholars at home and abroad because of their mechanical, electrical, optical, and thermal properties, making them have broad application prospects in micro-nano electronic devices. Aiming at the deficiencies in the existing preparation technology, the present invention proposes a simple and effective method for preparing carbon nano cones based on molecular simulation technology. In order to obtain the above-mentioned carbon nano cones, the specific implementation steps are as follows:

[0021] First, export the graphite unit cell from the MaterialsStudios simulation software structure database, then cut out the rectangular single-layer graphite unit cell along the (001) crystal direction of the unit cell, that is, the single-layer graphene unit cell, and then cut out the re...

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Abstract

The invention provides a design method for cutting and inducing graphene to spontaneously crimp to form a carbon nanocone. The design method comprises the steps: 1) constructing circular graphene sheets in different semidiameters in MaterialsStudios software, 2) cutting out a gap in each circular graphene sheet from a circle center in any semidiameter direction, and 3) carrying out molecular mechanic optimization and dynamic simulation on the cut graphene with a Discover module in the MaterialsStudios software to form a carbon nanocone configuration finally. The invention provides the design method of change of the graphene sheets to a CNC (Computer Numerical Control) structure via cutting by using a computer simulation technology, regulation and control of structural parameters of the graphene sheets such as a cone angle and length can be achieved; and the provision of the method has important guide significance on experimental preparation of the carbon nanocone.

Description

technical field [0001] The invention belongs to the technical field of nano-carbon materials, and in particular relates to a design method for forming carbon nano-cones based on cutting-induced graphene curling. Background technique [0002] Since the discovery of carbon nanotubes by Iijim in 1991, various carbon nanostructures have attracted extensive attention and in-depth research by many scientific and technological workers, including carbon nanotubes, graphene, carbon nanocones (CNC) and so on. This is mainly because these carbon nanostructures have many peculiar and unusually significant physical and chemical properties, such as high strength, low density, high electrical conductivity, high thermal conductivity, and large specific surface area. These carbon nanostructures have extensive and important potential applications in various engineering fields, such as nanoelectromechanical systems and nanosensors. [0003] Among them, CNC is attracting more and more attentio...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/02B82Y30/00B82Y40/00
Inventor 燕友果李文李振张军刘冰
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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