A mechanically controllable cracking device and method for multi-level control electrode spacing continuously changing

A technology for controlling electrodes and spacing, which is applied in the field of molecular electronics, can solve the problems of low control precision, large jitter, and high cost, and achieve the effects of stable driving process, extended displacement length, and low cost

Active Publication Date: 2022-02-18
NANKAI UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to improve the problems of high cost, short stroke, low control precision and large jitter existing in the existing mechanical controllable fissure technology, and to provide a low-cost, high-stability, high-efficiency hydraulic control technology. High-precision, long-travel mechanically controllable cracking device

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  • A mechanically controllable cracking device and method for multi-level control electrode spacing continuously changing
  • A mechanically controllable cracking device and method for multi-level control electrode spacing continuously changing
  • A mechanically controllable cracking device and method for multi-level control electrode spacing continuously changing

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Embodiment Construction

[0029] In order to understand the technical features, purpose and effect of the present invention more clearly, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.

[0030] Such as Figure 1~5 As shown, the sub-femto-level mechanical controllable cracking device based on hydraulic principle multi-level control, the device includes X-axis linear displacement table 1, support rod 2, steel sheet 3, piston push rod 4, hydraulic cylinder 5, hydraulic valve 6. Base 7, bracket 8, screw push rod 9, motor 10. There are 4 screw push rods 9, including a 10mm inner diameter screw push rod 91, a 7.5mm inner diameter screw push rod 92, a 5mm inner diameter screw push rod 93, and a 2.5mm inner diameter screw push rod 94.

[0031] The base 7 of the present invention is square, and other components are located above the base 7. The inside of the hydraulic cylinder 5, the hydraulic valve 6 and the connected pipelines a...

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Abstract

The invention discloses a mechanically controllable split junction device and method for continuously changing the distance between electrodes controlled in multiple stages, and is applied in the field of molecular electronics. It mainly includes the following devices: hydraulic cylinder, piston push rod, X-axis linear displacement platform, multi-channel hydraulic valve, bracket, motor, screw push rod, steel sheet, support rod and base; the hydraulic cylinder is divided into five different cross-sectional areas The hydraulic cylinder pushes the hydraulic cylinder with the largest cross-sectional area through the movement of the piston in the four hydraulic cylinders with smaller cross-sectional areas and the closing of the valve. The large displacement of the small cross-sectional area controls the small displacement of the large cross-sectional area, and the large thrust is controlled by the small thrust. Acting on the nano-splitting device chip, the distance between the two electrodes can be controlled with sub-femtometer precision, so as to precisely construct molecular junctions. The present invention is a novel mechanically controllable molecular split junction (MCBJ) device, which has longer displacement and more precise distance control compared with traditional split junction devices.

Description

technical field [0001] The invention relates to a mechanical device for constructing single-molecule junctions by using a mechanically controllable nano-fission method. It mainly involves hydraulic principles, including five hydraulic cylinders with different cross-sectional areas, and is specifically applied to the fields of molecular electronics and the like. Background technique [0002] The research and manufacture of molecular devices are inseparable from molecular electronics. The current main technical means for molecular research and measurement include electrochemical corrosion, electromigration, scanning tunneling microscope split junction (STM-BJ), atomic force microscope split Junction method (AFM-BJ), mechanically controlled split junction method (MCBJ), etc., among which mechanically controlled split junction method is widely used for its stability and precision. However, the mechanically controllable cracking device mainly used at present is mainly a piezoelec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/00
CPCG01N27/00
Inventor 向东郭晨阳赵智凯尹凯凯倪立发张素荣王懋宁赵智宾
Owner NANKAI UNIV
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