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Graphene electrode chip for mechanically controllable break junction (MCBJ) technique

A graphene electrode and graphene technology are applied to the electrochemical variables of materials, material analysis through electromagnetic means, and measurement devices. It can solve the problems of narrow distribution of electronic density of states and unstable mechanical properties of metal electrodes. Adaptability, high stability of molecular knots, and easy operation

Active Publication Date: 2017-09-19
XIAMEN UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to address the shortcomings of the metal electrode chip in the existing mechanically controllable crack junction (MCBJ) technology, such as unstable mechanical properties, easy oxidation, and relatively narrow distribution of electronic density of states near the Fermi level. , providing a graphene electrode chip for mechanically controllable split junction technology

Method used

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  • Graphene electrode chip for mechanically controllable break junction (MCBJ) technique
  • Graphene electrode chip for mechanically controllable break junction (MCBJ) technique
  • Graphene electrode chip for mechanically controllable break junction (MCBJ) technique

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Embodiment Construction

[0036] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.

[0037] see Figure 1~6 , The embodiment of the present invention includes a stainless steel sheet 1, a graphene wire 2, a resin 3, a liquid pool 4, a sealing ring, a clamp 5, a base 6 and a shielding box.

[0038] The stainless steel sheet 1, the graphene wire 2, and the resin 3 are used for the manufacture of the graphene electrode chip.

[0039] The liquid pool 4 is suitable for the micro liquid pool of the MCBJ experiment. The polytetrafluoroethylene material is selected and processed into a cuboid with a perforated structure, which is used to contain the solution containing the target molecule. At the bottom of the liquid pool 4, a groove matching the O-ring is reserved in advance. The liquid pool 4 is fixed to the base screw and the shrinkage of the O-ring is used to seal the liquid in the micro electrolytic cell. The upper and lower sides of t...

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Abstract

The invention discloses a graphene electrode chip for a mechanically controllable break junction (MCBJ) technique, and relates to a graphene electrode chip. The graphene electrode chip comprises a stainless steel sheet, graphene metal wires and epoxy resin, wherein the stainless steel sheet is used for preparing a substrate of a graphene chip; the graphene metal wires are mounted above the stainless steel sheet in a hanging manner and are fixed through the epoxy resin. A preparation method of the graphene electrode chip comprises the following steps of 1), preparing a stainless steel substrate; 2), preparing the epoxy resin; 3), coating the epoxy resin; 4), constructing a graphene electrode on one side; 5), curing the epoxy resin; 6), constructing the graphene electrode on the other side; 7), dropwise coating the epoxy resin; 8), curing the epoxy resin. The novel graphene chip applicable to an MCBJ is made by adopting the graphene metal wires which are relatively low in price and a simple stainless steel sheet structure; some defects of a metal electrode are successfully overcome; the graphene electrode chip has advantages of being low in cost, simple and convenient to operateion and further high in the stability of a molecular junction stability, and the like. The graphene electrode chip can be prepared in a common chemical laboratory, and has favorable generality.

Description

technical field [0001] The invention relates to a graphene electrode chip, in particular to a graphene electrode chip used in mechanically controllable splitting technology. Background technique [0002] Mechanically Controllable Break Junction (MCBJ) method is a method used to study the electrical properties of single or a few atoms, molecules, supramolecules and atomic clusters. The MCBJ method has the ability to quickly construct a large number of molecular junctions in a short period of time. Following the scanning tunneling microscope (Scanning Tunneling Microscope, STM), atomic force microscope (Atomic Force Microscope, AFM), micro-nano processing technology and other series can be manipulated at the nanoscale After the experimental method, MCBJ has further promoted the development of molecular electronics because of its relatively low price, simple device, easy operation and high repeatability. [0003] The chip is the core part of the MCBJ experimental setup. At pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30
CPCG01N27/308
Inventor 洪文晶皮九婵刘俊扬郑珏婷杨扬师佳肖宗源
Owner XIAMEN UNIV
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