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Flexible nanofiber-based electronic skin as well as preparation method

A nanofiber and electronic skin technology, applied in the field of flexible sensors, can solve the problems of low sensitivity, high power consumption, and high working voltage, and achieve high sensitivity, good biocompatibility, and solve the effects of high working voltage

Active Publication Date: 2016-06-15
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a flexible nanofiber-based electronic skin and its preparation method, which can solve the problems of high working voltage, high power consumption and low sensitivity in the prior art

Method used

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  • Flexible nanofiber-based electronic skin as well as preparation method
  • Flexible nanofiber-based electronic skin as well as preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for preparing a flexible nanofiber-based electronic skin, comprising the following steps:

[0025] 1) Preparation of nanofiber suspension: use a mixed solvent of isopropanol and water with a mass ratio of 6:4 to shear EVOH nanofibers at a speed of 5000r / min for 50s to form a suspension with a solid content of 1% (mass), An EVOH nanofiber suspension was obtained.

[0026] 2) Conduction treatment of the nanofiber suspension: take 50 g of the prepared EVOH nanofiber suspension and place it in an ice bath, add 0.3 g of pyrrole monomer and auxiliary agent anthraquinone-2,7-sulfonic acid sodium salt 0.25 g to it , and then slowly added 4.2 g of 9-hydrated ferric nitrate and 2.7 g of 5-sulfosalicylic acid to react for 4 h. After the reaction is completed, the conductive nanofiber suspension is obtained for use.

[0027] 3) Template preparation: laser lithography is used to prepare a mold with grooves or micro-protrusion structures;

[0028] 4) Preparation of micro-...

Embodiment 2

[0031] A method for preparing a flexible nanofiber-based electronic skin, comprising the following steps:

[0032] 1) Preparation of nanofiber suspension: Use a mixed solvent of n-hexane and acetone with a volume ratio of 7:3 to shear POE nanofibers at a speed of 7000r / min for 50s to form a suspension with a solid content of 1% (mass), Obtain POE nanofiber suspension (see figure 1 shown).

[0033] 2) Conduction treatment of the nanofiber suspension: take 50 g of the prepared POE nanofiber suspension and place it in an ice bath, add 0.3 g of pyrrole monomer and auxiliary agent anthraquinone-2-sulfonic acid sodium salt 0.25 g, and then Then slowly add 4.2 g of ferric chloride and 2.7 g of 5-sulfosalicylic acid to react for 4 h. After the reaction is completed, the conductive nanofiber suspension is obtained for use.

[0034] 3) Template preparation: laser lithography is used to prepare a mold with grooves or micro-protrusion structures;

[0035] 4) Preparation of micro-groov...

Embodiment 3

[0038] A method for preparing a flexible nanofiber-based electronic skin, comprising the following steps:

[0039]1) Preparation of nanofiber suspension: use a mixed solvent of isopropanol and water with a mass ratio of 6:4 to shear EVOH nanofibers at a speed of 4000r / min for 50s to form a suspension with a solid content of 1% (mass), An EVOH nanofiber suspension was obtained.

[0040] 2) Conduction treatment of the nanofiber suspension: take 50 g of the prepared EVOH nanofiber suspension and place it in an ice bath, add 0.3 g of pyrrole monomer and auxiliary agent anthraquinone-2-sulfonic acid sodium salt 0.25 g, and then Then slowly add 4.2 g of ferric chloride and 2.7 g of 5-sulfosalicylic acid to react for 4 h. After the reaction is completed, the obtained conductive nanofiber suspension is mixed with the POE nanofiber suspension for use.

[0041] 3) Template preparation: laser lithography is used to prepare a mold with grooves or micro-protrusion structures;

[0042] 4...

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Abstract

The invention relates to a flexible nanofiber-based electronic skin as well as a preparation method, and belongs to the field of flexible sensors. The flexible nanofiber-based electronic skin is characterized in that the electronic skin is prepared by attaching two layers of flexible nanofiber membranes which are treated by conductive treatment, and the thickness of the flexible nanofiber membrane is 30-500[mu]m, wherein at least one surface of the two surfaces which are attached is provided with micro groove or micro protrusion structures. The electronic skin solves the problems of high working voltage, large power consumption and low sensitivity in prior art; the electronic skin has the effects of sensitive layers and conductive electrodes with a single structure and a simple process, and the electronic skin can be used for industrial production; the electronic skin has good biocompatibility and can be well integrated with a human skin, and is convenient for constructing a wearable device; a unique nanostructure is applied to the electronic skin, so that the electronic skin has higher sensitivity and better stability; and the whole device is light, small, smart and is convenient for carrying.

Description

technical field [0001] The invention relates to a flexible nanofiber-based electronic skin and a preparation method thereof, belonging to the field of flexible sensors. Background technique [0002] With the rapid development of science and technology, research on artificial intelligence robots and humanoid robots has been put on the agenda. The human skin to be simulated by this humanoid robot needs to have extremely high sensitivity and stability to low pressure. As early as 2003, the research team of the University of Tokyo in Japan made a thin film of pentacene molecules, a low-molecular organic substance, and realized the electronic skin sensing pressure through the pressure sensors densely covered on its surface. Since the University of Tokyo first proposed OFET electronic skin in 2004, there have been successful constructions of capacitive, resistive, and voltage-type electronic skins. In recent years, with the rapid development of nanotechnology and nanomaterials, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/37D06M11/83B32B27/02B32B27/12B32B27/18B32B27/30B32B27/32B32B27/40B32B25/00B32B37/15B32B3/30
CPCB32B3/30B32B5/26B32B37/15B32B2250/20B32B2250/24B32B2307/202B32B2307/51D06M11/83D06M15/37
Inventor 王栋王跃丹吴永智钟卫兵刘琼珍卿星
Owner WUHAN TEXTILE UNIV
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