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Mechanically controllable break junction device with multilevel control electrode spacing continuously changed as well as method

A technology for controlling electrodes and spacing, which is applied in the field of molecular electronics, can solve problems such as 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: 2019-11-15
NANKAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Mechanically controllable break junction device with multilevel control electrode spacing continuously changed as well as method
  • Mechanically controllable break junction device with multilevel control electrode spacing continuously changed as well as method
  • Mechanically controllable break junction device with multilevel control electrode spacing continuously changed as well as method

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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 break junction (MCBJ) device with multilevel control electrode spacing continuously changed as well as a method, applied to the field of molecular electronics. The mechanically controllable break junction device mainly comprises the following devices: a hydraulic cylinder, a piston push rod, an X axis linear displacement platform, a multichannelhydraulic valve, a support, a motor, a spiral push rod, a steel disc, a strut and a base, the hydraulic cylinder is divided into five hydraulic cylinders with different cross-sectional areas, a hydraulic cylinder with the largest cross-sectional area is pushed by moving pistons in four hydraulic cylinders with smaller cross-sectional areas and closing the valve, large cross-sectional area and small displacement are controlled by small cross-sectional area and large displacement, and high thrust is controlled by low thrust. When the mechanically controllable break junction device disclosed by the invention is acted on a nano break junction device chip, sub-femtometer-level precision control on distance between two electrodes can be realized, so that a molecular junction is precisely constructed. The mechanically controllable break junction device disclosed by the invention is a novel mechanically controllable break junction device and has longer displacement and more precise distance control compared with the traditional break junction device.

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 Applications(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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