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Frictional nanogenerators and self-driving strain sensors and their applications

A nanogenerator and strain sensor technology, applied in the field of sensing, can solve the problems of limiting the service life of sensors, energy consumption, environmental pollution, etc., and achieve the effects of good cycle performance, long life and good stability

Active Publication Date: 2021-06-08
BEIJING INST OF NANOENERGY & NANOSYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the smart sensors that are widely used in our lives require additional energy-driven devices, which not only seriously limits the service life of the sensors, but also brings many problems such as energy consumption and environmental pollution.

Method used

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  • Frictional nanogenerators and self-driving strain sensors and their applications
  • Frictional nanogenerators and self-driving strain sensors and their applications
  • Frictional nanogenerators and self-driving strain sensors and their applications

Examples

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Effect test

no. 1 example

[0059] In the first exemplary embodiment of the present disclosure, a triboelectric nanogenerator is provided, and the triboelectric nanogenerator of this embodiment can be used as a self-driving strain sensor.

[0060] figure 1 It is a front view structural schematic diagram of a triboelectric nanogenerator according to an embodiment of the present disclosure. figure 2 For such figure 1 Schematic diagram of the top view structure of the triboelectric nanogenerator shown.

[0061] refer to figure 1 and figure 2 As shown, the triboelectric nanogenerator of the present disclosure includes: a conductive friction structure comprising a conductive friction layer; a friction structure spaced apart from the conductive friction structure, the friction structure comprising a dielectric friction layer, and the dielectric friction layer Set opposite to the conductive friction layer; wherein, under the action of the first external force, the conductive friction layer contacts and se...

no. 2 example

[0103] In a second exemplary embodiment of the present disclosure, a triboelectric nanogenerator is provided. Compared with the first embodiment, the triboelectric nanogenerator of this embodiment is a triboelectric nanogenerator in the form of two electrodes in a contact-separation mode.

[0104] Figure 11 It is a schematic structural diagram of an asymmetric contact-separation mode bi-electrode mode triboelectric nanogenerator according to an embodiment of the present disclosure.

[0105] In this example, refer to Figure 11 As shown, the triboelectric nanogenerator is an asymmetric contact-separation mode double-electrode generator, and the conductive friction layer 111 and the dielectric friction layer 122 are respectively used as two electrode output ends of the generator.

[0106] In this embodiment, the triboelectric nanogenerator in this form is similar to the generator in the double-electrode form, and can be spaced and fixed in the form of a spacer layer and a sup...

no. 3 example

[0111] In a third exemplary embodiment of the present disclosure, a self-driven strain sensor is provided, including any triboelectric nanogenerator mentioned in the present disclosure.

[0112] In the self-driven strain sensor, the conductive friction structure of the triboelectric nanogenerator is used as the strain sensing unit, the second external force is applied to the conductive friction structure to generate strain, and the first external force is applied to the friction structure and the conductive friction structure at the same time function, making the contact-separation between the conductive friction layer and the dielectric friction layer, so that the resistance of the conductive friction layer changes due to the strain, and the electrical resistance of the conductive friction layer and the dielectric friction layer At least one of contact area, contact separation frequency, and amplitude parameters is varied to produce an electrical output indicative of said stra...

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Abstract

A triboelectric nanogenerator, a self-driving strain sensor and its application, the triboelectric nanogenerator, comprising: a conductive friction structure, including a conductive friction layer; a friction structure, arranged at intervals with the conductive friction structure, and the friction structure includes a dielectric Friction layer, the dielectric friction layer is arranged opposite to the conductive friction layer; wherein, under the action of the first external force, the conductive friction layer and the dielectric friction layer are contact-separated to generate electrical output; at the same time Under the action of the second external force, the conductive friction layer generates strain, so that the resistance of the conductive friction layer changes, and at least one of the contact area, contact separation frequency and amplitude parameters between the conductive friction layer and the dielectric friction layer changes, resulting in an electrical output that characterizes the strain. Vibration energy or wind energy is effectively used to realize self-driven sensing, and it has potential application value in the characterization of strain and the force that produces strain and strain limit alarm.

Description

technical field [0001] The disclosure belongs to the field of sensor technology, and relates to a friction nanogenerator, a self-driving strain sensor and applications thereof. Background technique [0002] The energy crisis is getting worse day by day. Energy forms such as wind energy, vibration energy and biomechanical energy widely exist in the surrounding environment. Triboelectric nanogenerator (TENG) is a device that converts mechanical energy in the environment into electrical energy by coupling the frictional electrification effect and electrostatic induction effect. , has the advantages of no pollution, low cost, simple structure, and the ability to collect low-frequency mechanical energy. The design and application of TENG will have strategic significance for energy crisis issues. [0003] With the rapid development of artificial intelligence, more and more occasions urgently need intelligent devices. As a new type of sensor, strain sensors are widely used in elect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N1/04G01B7/16
CPCG01B7/18H02N1/04
Inventor 杨亚赵雪
Owner BEIJING INST OF NANOENERGY & NANOSYST
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