Electrical counter based on super-smooth homojunction interface and counting method

By using an electrical counter based on a superslippery homojunction interface and leveraging the resistance abrupt change characteristics of lattice matching of graphite or multilayer graphene layers at specific rotation angles, the problem of high precision and long lifespan of micro-nano counters at the microscale was solved, and high signal-to-noise ratio counting signal generation was achieved.

CN121990518APending Publication Date: 2026-05-08RESEARCH INSTITUTE OF TSINGHUA UNIVERSITY IN SHENZHEN +1
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Patent Information

Application Number
CN202610133774.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-30
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Existing micro-nano counting or angular position detection technologies are difficult to achieve high precision, low power consumption, long lifespan, and easy integration at the microscale. Furthermore, traditional counters rely on external scales and are susceptible to wear and environmental influences.

Method used

An electrical counter based on a superlubricated homojunction interface is used. It utilizes the resistance change characteristics generated by the lattice matching of graphite or multilayer graphene layers at a specific rotation angle to achieve counting by monitoring the resistance change, and generates a counting signal by combining it with a signal processing system.

Benefits of technology

It achieves high-precision, low-noise ratio counting, avoids mechanical wear, has atomic-level precision and extremely high repeatability, and is suitable for miniaturization and large-scale manufacturing.

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Abstract

The invention discloses an electrical counter based on a super-smooth homojunction interface and a counting method, and relates to the technical field of micro-nano electromechanical systems (MEMS / NEMS). Comprising a base part, a rotatable part, a first layered material layer, a second layered material layer and a measuring and processing system, and the rotatable part can rotate relative to the base part; the measuring and processing system is electrically connected to the first layer of layered material and the second layer of layered material and is configured to: monitor a change in a resistance value across the homojunction interface during the rotational motion; identifying a characteristic reduction of the resistance value; outputting a count signal based on the identification of the characterization reduction; the beneficial effects of the invention are that the scheme utilizes the intrinsic physical effect of the lattice of the layered material at a specific rotation angle to realize a novel counting sensing mechanism which is high in precision, high in signal-to-noise ratio and extremely easy to miniaturize.
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