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Fiber-based shape adaptive passive electronic skin and preparation method thereof

An adaptive, electronic skin technology, which is applied in the measurement of the properties and forces of piezoelectric resistive materials, can solve the problems that it is difficult to achieve a high degree of self-adaption in the shape of the electronic skin, affecting the wearing comfort of the human body, and inconvenient to replace the battery. , to achieve the effect of shape adaptability, excellent flexibility and avoiding discomfort

Active Publication Date: 2019-09-24
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional pressure sensors are usually made of hard materials, such as silicon semiconductors, elastic metals, etc., and the goal of electronic skin is to be directly attached to the surface of human skin or robots, or even directly replace human skin, which requires that electronic skin must be soft As a result, it is difficult for the electronic skin to be directly compatible with traditional hard materials
[0004] Recently, more and more research teams have designed and prepared flexible electronic skins by combining micro-nano electronic technologies such as plasma etching, magnetron sputtering, and chemical vapor deposition. The shape is highly adaptive, so it is difficult to fit seamlessly with human skin, which affects its sensitivity
In addition, many electronic skins need an external power supply for power supply, and it is very inconvenient to replace the battery frequently. Moreover, most of the power supplies are made of hard materials and have a large volume, which affects the comfort of the human body.

Method used

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  • Fiber-based shape adaptive passive electronic skin and preparation method thereof
  • Fiber-based shape adaptive passive electronic skin and preparation method thereof
  • Fiber-based shape adaptive passive electronic skin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A fiber-based highly adaptive passive electronic skin based on the piezoelectric effect, including a flexible coaxial piezoelectric nanofiber membrane prepared by a one-step coaxial electrospinning technique, the upper side of the flexible coaxial piezoelectric nanofiber membrane The flexible conductive fabric electrodes are arranged on the lower side and the lower side, and the flexible coaxial piezoelectric nanofiber film and the flexible conductive fabric electrodes are arranged in the transparent packaging material. The thickness of the flexible conductive fabric electrode is 35 μm, and the thickness of the transparent packaging material is 70 μm.

[0047] The preparation method of the above-mentioned fiber-based highly adaptive passive electronic skin is as follows:

[0048] Step 1: Add 100mg of graphene (diameter<40nm) into a mixed solvent of 26g N,N-dimethylformamide and 19g acetone, and perform ultrasonic dispersion at room temperature (25°C) and 300W 2 hours t...

Embodiment 2

[0054] A fiber-based highly adaptive passive electronic skin based on the piezoelectric effect, including a flexible coaxial piezoelectric nanofiber membrane prepared by a one-step coaxial electrospinning technique, the upper side of the flexible coaxial piezoelectric nanofiber membrane The flexible conductive fabric electrodes are arranged on the lower side and the lower side, and the flexible coaxial piezoelectric nanofiber film and the flexible conductive fabric electrodes are arranged in the transparent packaging material. The thickness of the flexible conductive fabric electrode is 30 μm, and the thickness of the transparent packaging material is 100 μm.

[0055] The preparation method of the above-mentioned fiber-based highly adaptive passive electronic skin is as follows:

[0056] Step 1: Add 150mg of carbon nanotubes (diameter<20nm) to 50g of N,N-dimethylformamide, ultrasonically disperse at room temperature (25°C) and 300W for 2 hours to form a uniform and stable firs...

Embodiment 3

[0061] A fiber-based highly adaptive passive electronic skin based on the piezoelectric effect, including a flexible coaxial piezoelectric nanofiber membrane prepared by a one-step coaxial electrospinning technique, the upper side of the flexible coaxial piezoelectric nanofiber membrane The flexible conductive fabric electrodes are arranged on the lower side and the lower side, and the flexible coaxial piezoelectric nanofiber film and the flexible conductive fabric electrodes are arranged in the transparent packaging material. The thickness of the flexible conductive fabric electrode is 40 μm, and the thickness of the transparent packaging material is 90 μm.

[0062] The preparation method of the above-mentioned fiber-based highly adaptive passive electronic skin is as follows:

[0063] Step 1: Add 70mg of silver nanowires (diameter<10nm) to a mixed solvent of 28g N,N-dimethylformamide and 20g acetone, and perform ultrasonic dispersion at room temperature (25°C) and 300W 2 ho...

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Abstract

The invention provides a fiber-based shape adaptive passive electronic skin and a preparation method thereof. The fiber-based shape highly adaptive passive electronic skin, is characterized by comprising a flexible coaxial piezoelectric nanofiber membrane prepared by coaxial electrospinning, wherein the upper and lower sides of the flexible coaxial piezoelectric nanofiber membrane are both provided with flexible conductive fabric electrodes; and the flexible coaxial piezoelectric nanofiber membrane and the flexible conductive fabric electrodes are disposed in a transparent packaging material. The excellent flexibility of the electronic skin prepared by the method ensure that the electronic skin can be seamlessly fitted with a human body to provide the wearing comfort for the human body, has high sensitivity, can sensitively sense the motion of the human body, and has a wide application space in the field of human sport health wearable detection.

Description

technical field [0001] The invention belongs to the technical field of novel flexible sensors, and in particular relates to a fiber-based highly self-adaptive passive electronic skin and a preparation method thereof. Background technique [0002] Electronic skin is a new type of flexible bionic sensor device, which can be used to realize the tactile perception function of bionic skin. Since the perception of human skin is qualitative perception, electronic skin can express various feelings in a quantitative way. As a new type of wearable flexible tactile sensor, electronic skin has the basic function of bionic tactile perception, which is directly related to the intelligence and multifunctionality of the next generation of robots, medical equipment, human prosthetics and wearable devices. An interdisciplinary and rapidly evolving field. [0003] Electronic skin is mainly used for pressure sensing, sports health monitoring, smart prosthetics, and even helping the disabled r...

Claims

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Application Information

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IPC IPC(8): G01L1/18
CPCG01L1/18
Inventor 李召岭朱苗苗楼梦娜丁彬俞建勇
Owner DONGHUA UNIV
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