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

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.

Description

Technical Field

[0001] This invention relates to the field of micro-nano electromechanical systems (MEMS / NEMS) technology, and more specifically, to an electrical counter and counting method based on a superslippery homojunction interface. Background Technology

[0002] In many cutting-edge fields of modern technology, such as ultra-precision manufacturing, aerospace, biomedical engineering, and consumer electronics, the demand for precise measurement and control of minute displacements, especially rotational angles at the microscopic scale, is growing. The development of micro-nano electromechanical systems (MEMS / NEMS) and ultra-precision sensing technologies requires counters or angle encoders to not only be highly accurate and fast-responding, but also small in size, easy to integrate, low in power consumption, and long in life.

[0003] Currently, the mainstream micro-counting or angular position detection technologies mainly include the following, but each of them has its own insurmountable limitations: 1. Optical Encoder: Counts by detecting moiré fringes or coded signals generated by light passing through or reflecting off a precisely scribed grating disk. Although high accuracy can be achieved, its basic operating principle limits its miniaturization. Optical components (light source, lens, photodetector array) are relatively large, making integration into nanoscale systems difficult. Furthermore, it requires a complex external alignment system to ensure optical path accuracy, is sensitive to vibration and environmental contamination, and has relatively high power consumption.

[0004] 2. Magnetic sensors (such as Hall effect sensors, giant magnetoresistive (GMR) / tunneling magnetoresistive (TMR) sensors): These determine position or angle by detecting changes in the magnetic field. These sensors can be made in very small sizes, but they require a matching permanent magnet or electromagnet array as a signal source. This not only increases the complexity and size of the system, but the magnet itself may also be affected by external magnetic fields, impacting measurement accuracy. Fabricating uniform and stable micro-magnet arrays at the nanoscale is itself a significant challenge.

[0005] 3. Contact-type mechanical switches or potentiometers: These devices count or locate objects by switching physical contacts on and off or by continuous changes in resistance. Their most fatal flaw is mechanical wear. During long-term, high-speed reciprocating motion, the contact interface will wear, oxidize, or fatigue due to friction, leading to poor contact, signal drift, or even complete device failure. This wear problem is particularly severe at the micro- and nano-scale because the surface adhesion and friction effects are amplified, significantly reducing the device's reliability and lifespan.

[0006] 4. Capacitive or Piezoresistive Sensors: These sensors operate by detecting changes in capacitance caused by displacement or rotation, or changes in resistance caused by material strain. While they can achieve high integration, they generally suffer from a problem: their signal response is not "steep" enough. Under minute changes in displacement or angle, their output signal typically changes smoothly and linearly, lacking a clear, abrupt "counting point." This makes it difficult to accurately identify counting events, requiring complex signal processing algorithms and high-precision analog-to-digital converters to discern weak signal changes, resulting in a low signal-to-noise ratio and susceptibility to noise interference, leading to misjudgments.

[0007] Furthermore, almost all of the aforementioned traditional technical solutions rely on externally set "scales." Whether it's the grating of an optical encoder, the magnetic poles of a magnetic encoder, or the resistor track of a potentiometer, these "markers" are attached to the device through macroscopic processing methods (such as photolithography, scribing, and magnetization). The accuracy of these external marks is limited by the level of processing technology and may degrade due to wear or environmental changes during use. They lack an absolute, repeatable physical reference determined by the physical properties of the material itself.

[0008] In summary, existing technologies face a common technical bottleneck in achieving ultra-miniaturization, high signal-to-noise ratio, and high-precision angle counting. There is an urgent need for a novel technical solution that can break free from the constraints of traditional mechanical wear and utilize the intrinsic, atomic-scale physical properties of materials to provide a fundamentally more accurate and reliable counting mechanism. Summary of the Invention

[0009] To overcome the shortcomings of existing technologies, an electrical counter and counting method based on a superslippery homojunction interface are provided. This scheme utilizes the intrinsic physical effects of layered material lattices at specific rotation angles to achieve a novel counting and sensing mechanism with high precision, high signal-to-noise ratio, and easy miniaturization.

[0010] The technical solution adopted by this invention to solve its technical problem is: an electrical counter based on a superslippery homojunction interface, the improvement of which includes: A base component; A rotatable component, which can rotate relative to the base component; A first layer of material is fixed to one of the base component or the rotatable component; A second layer of material is fixed to the other of the base component or the rotatable component, wherein the first layer of material and the second layer of material are made of the same material and form a homogeneous interface through physical contact, which allows the rotational movement to occur. And a measurement and processing system electrically connected to the first layered material layer and the second layered material layer, and configured to: Monitor the change in resistance across the homojunction interface during the rotational motion; The characteristic reduction in resistance value caused by lattice matching of the first and second layered material layers at a specific comparability angle is identified; Based on the recognition of the reduced eigenvalues, a counting signal is output.

[0011] In the above structure, both the first layered material layer and the second layered material layer are graphite layers or multilayer graphene layers.

[0012] In the above structure, the specific common angle is 21.8°±0.5°.

[0013] In the above structure, the first layered material layer and the second layered material layer are two-dimensional transition metal dichalcogenide material layers.

[0014] In the above structure, the homojunction interface is a van der Waals interface, which exhibits a super-slippery state under incommensurable rotation angles, resulting in a friction coefficient of less than 0.001 for the rotational motion.

[0015] In the above structure, the measurement and processing system includes: A resistance monitoring circuit is used to apply a constant bias voltage or a constant bias current to the homojunction interface and measure the corresponding current or voltage to calculate the real-time resistance value. A signal processing unit, comprising a threshold comparison module and a pulse generation unit, is used to compare the real-time resistance value with a preset resistance threshold. When the real-time resistance value is lower than the threshold, it is determined that the characteristic reduction has been detected, and a pulse signal is generated.

[0016] In the above structure, the measurement and processing system further includes: A counter module is provided, which receives the pulse signal, generates the counting signal, and performs an addition operation based on the counting signal. A display module is connected to the counter module and is used to display the values ​​recorded by the counter module in real time.

[0017] In the above structure, the resistance threshold is set between the background resistance value at the homojunction interface at a non-specific common angle and the singular resistance value at the specific common angle.

[0018] The present invention also provides a counting method for an electrical counter based on a superlubricated homojunction interface, wherein the improvement is that the method is applied to the electrical counter based on the superlubricated homojunction interface as described above, and the method includes the following steps: The rotatable component rotates relative to the base component. During the rotational motion, the real-time resistance value R(t) across the homojunction interface is continuously monitored by the measurement and processing system. The monitored real-time resistance value R(t) is compared with a preset resistance threshold R. th Compare; When the monitored real-time resistance value R(t) is matched at a specific common angle by the lattices of the first and second layered material layers, it decreases from above the resistance threshold R. th The state transition drops below the resistance threshold R. th When the state is in the count event, it is determined as a counting event and a counting signal is generated.

[0019] Furthermore, after the counting event occurs, a pulse signal is generated by the measurement and processing system; A counting signal is generated based on the pulse signal; Based on the counting signal, the counter module is driven to perform an addition operation.

[0020] The beneficial effects of this invention are as follows: Based on the super-slippery characteristics of the non-commensurable angle structure of layered materials, the theoretical frictional force approaches zero, and the rotor experiences almost no mechanical wear, fundamentally breaking through the lifespan bottleneck of contact sensors and adapting to long-term continuous operation scenarios. Secondly, the resistance at the commensurable angle exhibits a magnitude-dependent abrupt change due to the intrinsic quantum transport effect, resulting in a clear signal dip. Its switching characteristics lead to an extremely high signal-to-noise ratio and strong resistance to circuit noise and temperature drift. Furthermore, the counting accuracy is intrinsically determined by the material's lattice constant, and the commensurable angle is a physical constant, achieving atomic-level precision and repeatability. This eliminates the need for complex individual calibration, facilitating large-scale, low-cost manufacturing. Attached Figure Description

[0021] Figure 1 This is a schematic diagram illustrating the structural principle of an electrical counter based on a superslippery homojunction interface according to the present invention.

[0022] Figure 2 This is a schematic diagram illustrating the linear relationship between the rotation angle and the interface resistance of the homojunction in this invention.

[0023] Figure 3 This is a schematic diagram illustrating the working principle of an electrical counter based on a superslippery homojunction interface according to the present invention.

[0024] In the figure: base component 10, external frame 101, rotatable component 20, first layered material layer 30, homogeneous junction interface 301, second layered material layer 40, measurement and processing system 50, first electrode 501, second electrode 502, resistance monitoring circuit 503, constant current source 5031, reference voltage source 5032, signal processing unit 504, threshold comparison module 5041, pulse generation unit 5042, rotating axis 60, counter module 70, display module 80. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] The following will clearly and completely describe the concept, specific structure, and technical effects of the present invention in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this invention can be combined interactively without contradicting each other.

[0027] Example 1 Reference Figure 1 As shown, this invention discloses an electrical counter based on a superlubricated homojunction interface. The electrical counter includes a base component 10, a rotatable component 20, a first layered material layer 30, a second layered material layer 40, and a measurement and processing system 50. In this embodiment, the base component 10 is a stator unit, which is in a fixed state; the rotatable component 20 is a rotor unit, which can rotate around... Figure 1 The rotating component 60 shown in the diagram rotates along the rotation axis. In this embodiment, the stator unit is provided with an outer frame 101, and the rotor unit is disposed within the outer frame 101. It is understood that, since the rotor unit needs to rotate along the rotation axis 60, the rotor unit and the outer frame are in a sliding state. In this embodiment, the rotor unit can be a micro-gear, a micro-turbine blade, the shaft of a MEMES mirror, or any mechanical structure that requires rotation counting at a microscale.

[0028] A first layered material layer 30 is prepared on the surface of the stator unit, facing the rotor unit. Correspondingly, a second layered material layer 40 is prepared on the surface of the rotor unit, facing the stator unit. In this preferred embodiment, both the first layered material layer 30 and the second layered material layer 40 are thin layers of highly oriented pyrolytic graphite (HOPG) or several layers of graphene obtained from bulk graphite by mechanical exfoliation, forming the first graphite layer and the second graphite layer, respectively. These two material layers are essentially the same, both being hexagonal honeycomb lattices composed of sp² hybridized carbon atoms. By stacking the first graphite layer and the second graphite layer, their surfaces come into physical contact, thereby forming a graphite / graphite homojunction interface 301, which is bonded by van der Waals forces. This weak interaction allows for extremely smooth relative rotation between the two graphite layers. Specifically, the rotor unit can rotate freely about the rotation axis 60 relative to the stator unit, while the friction at the homojunction interface is minimal. The first and second graphite layers are in a structurally superlubricated state, resulting in a coefficient of friction of less than 0.001 for the rotational motion. Structural superlubricity refers to a state where friction and wear approach zero when two solid surfaces slide in direct contact, formed by van der Waals forces. In the prior art, structural superlubricity has a clear definition, which will not be described in detail in this embodiment.

[0029] To measure the resistance across the homojunction interface, the electrical counter is further equipped with a measurement and processing system 50, combined with... Figure 1 As shown, the system is connected to the graphite layer via electrodes; specifically, the first electrode 501 forms a good ohmic contact with the first graphite layer; similarly, the second electrode 502 forms an ohmic contact with the second graphite layer. Metal wires are led out from these two electrodes and connected to the measurement and processing system 50. Combined with... Figure 3 As shown, the measurement and processing system 50 can be further divided into a resistance monitoring circuit 503 and a signal processing unit 504. The function of the resistance monitoring circuit 503 is to apply a stable electrical excitation to the homojunction interface and measure its response. For example, the resistance monitoring circuit 503 includes a constant current source 5031, which injects a small constant current I0 between the electrode and the graphite layer, and then measures the voltage V(t) between the two electrodes through a high-precision voltmeter; according to Ohm's law, the real-time resistance value across the interface is R(t) = V(t) / I0. The signal processing unit 504 is typically implemented by a microcontroller (MCU) or a field-programmable gate array (FPGA). It receives the digitized resistance value R(t) output by the resistance monitoring circuit 503, and its core algorithm is a threshold judgment logic.

[0030] Combination Figure 2As shown in the figure, this illustrates the working principle of the invention. The horizontal axis θ represents the rotation angle of the rotor unit relative to the stator unit, and the vertical axis Resistence represents the resistance across the homojunction interface. When the rotation angle θ is at most values, the lattices of the upper and lower graphite layers are in a non-commensurate stacking state, with disordered atomic arrangement. The tunneling of interlayer electrons is strongly scattered, thus exhibiting a high background resistance. However, when the rotation angle θ is rotated to a specific angle, the situation changes. For a graphite / graphite homojunction, this angle is 21.8°, which is defined as the specific commensurate angle. At this specific commensurate angle, the lattices of the two graphite layers macroscopically form a periodic moiré superlattice. The electron wave function undergoes resonant enhancement in the interlayer overlap integral, providing a low-scattering tunneling channel for electrons. The macroscopic manifestation of this is a sharp and significant decrease in the interface resistance Resistence, forming a sharp "valley singularity peak," which is defined as the characteristic valley resistance. Experiments show that the resistance reduction can reach more than an order of magnitude, for example, from several thousand ohms to several hundred ohms. Figure 2 In the process, when the angle is rotated to 38.2°, the interface resistance exhibits the same behavior as at 21.8°. The principle is the same; 21.8° and 38.2° are mirror images of each other about 30°. This will not be explained in detail here.

[0031] The counting logic of this invention utilizes this distinct physical characteristic. For example... Figure 2 The diagram shown illustrates the counting principle of the electrical counter of this invention. The resistance monitoring circuit 503 presets a resistance judgment threshold R. th In this embodiment, the resistance threshold R is set via the reference voltage source 5032 of the resistance monitoring circuit 503. th The setting of the resistance value is crucial; it must lie between the background resistance value and the characteristic low-level resistance value. A reasonable setting strategy is to allow the rotor unit to idle for one revolution during system initialization or calibration, measure and record the maximum and minimum resistance values, and then set the threshold value between the two.

[0032] Through the above embodiments, the present invention provides an electrical counter based on a superlubricated homojunction interface. During rotor unit rotation, it monitors the longitudinal resistance change across the homojunction interface and identifies a characteristic signal indicating a sharp drop in resistance when the lattices of the two layers are highly matched at one or more specific common angles. Finally, based on the successful identification of this characteristic "low point" signal, a standard digital counting signal is output. Therefore, the present invention provides a wear-free electrical counter based on a superlubricated homojunction interface, which utilizes the intrinsic physical effects of layered material lattices at specific rotation angles to achieve a novel counting / angle sensing mechanism with high precision, high signal-to-noise ratio, and easy miniaturization.

[0033] Embodiment 2 Combination Figure 3 As shown, on the basis of the above embodiments, the present invention also discloses a counting method for an electrical counter based on a super-slippery homogeneous junction interface. The counting method includes the following steps: S10. The electrical counter starts to operate, causing the rotatable member 20 (i.e., the rotor unit) to rotate relative to the base member 10 (i.e., the stator unit); S20. The measurement and processing system 50 starts to work, applies an electrical excitation to the homogeneous junction interface through the resistance monitoring circuit 503, and continuously collects the real-time resistance value R(t) across the interface; S30. The signal processing unit 504 compares the real-time collected resistance value R(t) with a preset threshold R th ; In this embodiment, the resistance threshold R th is set between the background resistance value of the homogeneous junction interface at a non-specific commensurate angle and the singular resistance value at the specific commensurate angle; S40. Make a judgment; through the threshold comparison module 5041, when the monitored real-time resistance value R(t) jumps from a state higher than the resistance threshold R th to a state lower than the resistance threshold R th due to the matching of the lattices of the first layer material layer 30 and the second layer material layer 40 at a specific commensurate angle, it is determined as a counting event and a counting signal is generated; specifically, it includes the following steps: S401. If R(t)≥R th , it means that the current is in the background area of the high-resistance state, that is, the rotation angle of the rotor unit has not reached the specific commensurate angle; at this time, the electrical counter does not perform any operation, returns to step S20, and continues to monitor the resistance at the next moment; S402. If it is determined that R(t)<Rth, this indicates that the rotation angle has just passed the position of the specific commensurate angle (i.e., in the resistance valley state), and at this time the resistance value R(t) shows a characteristic decrease and reaches the singular resistance value at the specific commensurate angle; in this embodiment, the specific commensurate angle is 21.8°; it should be noted that the specific commensurate angle can be set as a range value, for example, between 20.3° and 22.3°; S403. The pulse generation unit 5042 of the signal processing unit 504 then generates a pulse signal, and at this time it is determined as a valid "counting event" (or "angle positioning event"), and the counter module 70 is driven to perform an addition operation through this pulse signal to complete a counting operation to achieve precise measurement of mechanical rotation; through the display module 80, the counting result is displayed.

[0034] Therefore, based on the above steps, the present invention provides a counting method for an electrical counter based on a superslippery homojunction interface. This method utilizes the intrinsic physical effects of layered material lattices at specific rotation angles to achieve a novel counting / angle sensing mechanism with high precision, high signal-to-noise ratio, long lifespan, and easy miniaturization.

[0035] Example 3 Although the preferred embodiment of the present invention uses graphite / graphene, the underlying physical principles are universal and can be extended to other two-dimensional material systems with layered lattice structures; similar effects should also be achievable in homojunctions of two-dimensional materials. For example, in a specific embodiment, replacing the first layered material layer 30 and the second layered material layer 40 with transition metal dichalcogenide two-dimensional material layers, such as molybdenum disulfide (MoS2) or tungsten diselenide (WSe2), also results in a clear layered structure. Their homojunction interfaces, at specific rotation angles, will also change the interlayer coupling strength and electronic band structure due to lattice matching (or the formation of a specific long-period moiré superlattice), leading to a significant change in interlayer conductivity.

[0036] However, it should be noted that insulating two-dimensional materials, such as hexagonal boron nitride (h-BN), are not suitable for the resistance measurement-based scheme of this invention because they are not conductive and cannot form effective cross-interface conductive channels.

[0037] Therefore, by cleverly utilizing the intrinsic physical properties of homojunctions of two-dimensional layered materials, this invention pioneers a completely new, wear-free electrical counting technology route, which is expected to play an important role in next-generation micro-nano systems.

[0038] In summary, this invention provides an electrical counter and counting method based on a superslippery homojunction interface. Compared with existing technologies, the technical solution proposed in this invention has the following significant advantages: Firstly, it offers fundamentally wear-free operation and an ultra-long lifespan: This invention utilizes the super-slippery properties of layered materials (such as graphite) at incommensurable rotation angles. In this state, the atomic lattices are mismatched, the interlayer interaction barriers are extremely smooth, and the theoretical frictional force approaches zero. This means that the rotor experiences almost no mechanical wear during most of its rotational stroke, fundamentally solving the lifespan bottleneck problem of contact sensors, making it particularly suitable for demanding applications requiring long-term, continuous operation.

[0039] Secondly, extremely high signal-to-noise ratio and anti-interference capability: The counting is based on the "singularity" abrupt change in resistance at a specific common angle (21.8° for graphite). This sharp drop in resistance (usually an order of magnitude or higher) is an intrinsic quantum transport effect caused by lattice geometric matching and electronic wavefunction reconstruction. The signal characteristics are extremely distinct and steep, forming a very clear "V" or "U" shaped trough, which is easily identified by a simple threshold comparison circuit. This "yes" or "no" switching characteristic signal, compared to the gradually changing analog signals of traditional sensors, has a naturally high signal-to-noise ratio and is highly robust to interference from circuit noise, temperature drift, etc.

[0040] Third, intrinsic precision and repeatability at the atomic scale: the counting "scale" no longer depends on macroscopic processing, but is intrinsically determined by the lattice constant of the layered material itself. This specific commensurate angle is a physical constant with atomic-level precision and extremely high repeatability. The counting points of each similar device are naturally consistent, eliminating the need for complex individual calibrations. This makes it possible to achieve large-scale, low-cost manufacturing of high-precision sensors.

[0041] Fourth, extreme miniaturization and integration potential: The core sensing structure of this invention consists of only two atomically thin two-dimensional materials, whose size can be easily reduced to the micrometer or even nanometer level. The entire device structure is simple and fully compatible with standard MEMS / NEMS fabrication processes (such as chemical vapor deposition (CVD) growth, mechanical lift-off, electron beam lithography (EBL), thin film transfer, etc.), making it very suitable for in-situ integration on the chip to build a highly integrated system-on-a-chip (SoC).

[0042] The above is a detailed description of the preferred embodiments of the present invention. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An electrical counter based on a superslippery homojunction interface, characterized in that, include: A base component; A rotatable component, which can rotate relative to the base component; A first layer of material is fixed to one of the base component or the rotatable component; A second layer of material is fixed to the other of the base component or the rotatable component, wherein the first layer of material and the second layer of material are made of the same material and form a homogeneous interface through physical contact, which allows the rotational movement to occur. And a measurement and processing system electrically connected to the first layered material layer and the second layered material layer, and configured to: Monitor the change in resistance across the homojunction interface during the rotational motion; The characteristic reduction in resistance value caused by lattice matching of the first and second layered material layers at a specific comparability angle is identified; Based on the recognition of the reduced eigenvalues, a counting signal is output.

2. The electrical counter based on a superslippery homojunction interface according to claim 1, characterized in that, Both the first layered material layer and the second layered material layer are graphite layers or multilayer graphene layers.

3. An electrical counter based on a superslippery homojunction interface according to claim 2, characterized in that, The specific common angle is 21.8°±0.5°.

4. An electrical counter based on a superslippery homojunction interface according to claim 1, characterized in that, The first layer and the second layer are two-dimensional transition metal dichalcogenide material layers.

5. An electrical counter based on a superslippery homojunction interface according to claim 1, characterized in that, The homogeneous junction interface is a van der Waals interface, which exhibits a super-slippery state under incommensurable rotation angles, resulting in a friction coefficient of less than 0.001 for the rotational motion.

6. An electrical counter based on a superslippery homojunction interface according to claim 1, characterized in that, The measurement and processing system includes: A resistance monitoring circuit is used to apply a constant bias voltage or a constant bias current to the homojunction interface and measure the corresponding current or voltage to calculate the real-time resistance value. A signal processing unit, comprising a threshold comparison module and a pulse generation unit, is used to compare the real-time resistance value with a preset resistance threshold. When the real-time resistance value is lower than the threshold, it is determined that the characteristic reduction has been detected, and a pulse signal is generated.

7. An electrical counter based on a superslippery homojunction interface according to claim 6, characterized in that, The measurement and processing system also includes: A counter module is provided, which receives the pulse signal, generates the counting signal, and performs an addition operation based on the counting signal. A display module is connected to the counter module and is used to display the values ​​recorded by the counter module in real time.

8. An electrical counter based on a superslippery homojunction interface according to claim 6, characterized in that, The resistance threshold is set between the background resistance value at the homojunction interface at a non-specific common angle and the singular resistance value at the specific common angle.

9. A counting method for an electrical counter based on a superslippery homojunction interface, characterized in that, This method is applied to an electrical counter based on a superslippery homojunction interface as described in any one of claims 1-8, and the method includes the following steps: The rotatable component rotates relative to the base component. During the rotational motion, the real-time resistance value R(t) across the homojunction interface is continuously monitored by the measurement and processing system. The monitored real-time resistance value R(t) is compared with a preset resistance threshold R. th Compare; When the monitored real-time resistance value R(t) is matched at a specific common angle by the lattices of the first and second layered material layers, it decreases from above the resistance threshold R. th The state transition drops below the resistance threshold R. th When the state is in the count event, it is determined as a counting event and a counting signal is generated.

10. The counting method of an electrical counter based on a superslippery homojunction interface according to claim 9, characterized in that, After the counting event occurs, a pulse signal is generated by the measurement and processing system; A counting signal is generated based on the pulse signal; Based on the counting signal, the counter module is driven to perform an addition operation.

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