Unlock instant, AI-driven research and patent intelligence for your innovation.

A preparation method of laser-fabricated flexible piezoresistive tension sensor and the resulting tension sensor

A tension sensor, piezoresistive technology, applied in the field of sensors, can solve the problems of loss of thinness, easy loss of high precision, narrow stretching range, etc., achieve good stability and durability, retain circuit connectivity, and durability Good results

Active Publication Date: 2021-09-07
SOUTHEAST UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is often a big contradiction in the flexible piezoresistive sensors currently prepared. High-precision, ultra-thin flexible piezoresistive sensors are fragile, have a narrow stretching range, and are easily damaged; when pursuing high durability, it is easy to make the structure of the sensor complex and thin. It loses its lightness and thinness; it is easy to lose its high precision when pursuing a larger range of use

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A preparation method of laser-fabricated flexible piezoresistive tension sensor and the resulting tension sensor
  • A preparation method of laser-fabricated flexible piezoresistive tension sensor and the resulting tension sensor
  • A preparation method of laser-fabricated flexible piezoresistive tension sensor and the resulting tension sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for preparing a flexible piezoresistive tension sensor by laser, comprising the following steps:

[0027] a. Add 1mg / mL graphene oxide dispersion liquid dropwise on the surface of PDMS transfer substrate with smooth surface, the sheet diameter of graphene oxide dispersion liquid is less than 500nm, and form graphene oxide film layer after drying at room temperature for 3 hours;

[0028] b. Using a 2W laser to etch on the graphene oxide layer and reduce it to form a graphene pattern;

[0029] c. Soak and rinse the residual graphene oxide in deionized water, keep the graphene pattern, and then dry at room temperature for 1 h;

[0030] d, adding a nasal membrane on the graphene layer on the surface of the transfer substrate, and drying at room temperature for 2 hours to form a transparent film;

[0031] e. The formed transparent film is torn off from the PDMS transfer substrate to obtain a piezoresistive tension sensor with a graphene pattern attached.

[0032] ...

Embodiment 2

[0038] A method for preparing a flexible piezoresistive tension sensor by laser, comprising the following steps:

[0039] a. Add 2mg / mL graphene oxide dispersion liquid dropwise on the surface of PET transfer substrate with smooth surface, the sheet diameter of graphene oxide dispersion liquid is less than 500nm, after drying at room temperature for 5h, a graphene oxide film layer is formed;

[0040] b. Using a 2.5W laser to etch on the graphene oxide layer and reduce it to form a graphene pattern;

[0041] c. Soak and rinse the residual graphene oxide in deionized water, keep the graphene pattern, and then dry at room temperature for 2 hours;

[0042] d, adding a nasal membrane on the graphene layer on the surface of the transfer substrate, and drying at room temperature for 3 hours to form a transparent film;

[0043] e. The formed transparent film is torn off from the PET transfer substrate to obtain a piezoresistive tension sensor with a graphene pattern attached.

Embodiment 3

[0045] A method for preparing a flexible piezoresistive tension sensor by laser, comprising the following steps:

[0046] a. Add 1.5 mg / mL graphene oxide dispersion liquid dropwise on the surface of the PI transfer substrate with smooth surface. The graphene oxide dispersion liquid has a sheet diameter less than 500 nm, and after drying at room temperature for 4 hours, a graphene oxide film layer is formed;

[0047] b. Using a 2.3W laser to etch on the graphene oxide layer and reduce it to form a graphene pattern;

[0048] c. Soak and rinse the residual graphene oxide in deionized water, keep the graphene pattern, and then dry at room temperature for 1.5h;

[0049] d, adding a nasal membrane on the graphene layer on the surface of the transfer substrate, and drying at room temperature for 2.5 hours to form a transparent film;

[0050] e. The formed transparent film is torn off from the PI transfer substrate to obtain a piezoresistive tension sensor with graphene pattern attac...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for preparing a flexible piezoresistive tension sensor by laser and the resulting tension sensor. The preparation method comprises the following steps: (a) adding a graphene oxide dispersion liquid on the surface of a transfer substrate, and forming an oxide after drying. Graphene thin film layer; (b) utilizing laser to etch on graphene oxide layer, reduction forms graphene pattern; (c) immerses in deionized water and rinses residual graphene oxide, retains graphene pattern, then dry; ( d) adding a nasal membrane to the graphene layer on the surface of the transfer substrate, and forming a transparent film after drying; (e) tearing off the formed transparent film from the transfer substrate to obtain a piezoresistive tensile sensor with a graphene pattern attached. The sensor is prepared by the method described above. The graphene flexible piezoresistive tension sensor obtained in the present invention has the advantages of ultra-thinness, skin-fitting, good durability, high sensitivity, and the like.

Description

technical field [0001] The invention relates to the field of sensors, in particular to a method for preparing a flexible piezoresistive tension sensor by laser and the resulting tension sensor. Background technique [0002] The piezoresistive sensor is a sensor prepared by utilizing the characteristic that the piezoresistive material deforms under the action of an external force, resulting in a corresponding change in resistance. Flexible piezoresistive sensors have the advantages of simple structure, easy integration and output data, good flexibility and ductility, and are also the most widely studied flexible stress / strain sensors. [0003] In recent years, flexible piezoresistive sensors have shown huge market demand in various fields due to their outstanding advantages, which has attracted many researchers to study and work in this field. Nano-metal materials, carbon nanotubes, graphene and other advanced nano-materials have received high attention in this field due to ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/18C01B32/198C01B32/184C01B32/194
CPCC01B32/184C01B32/194C01B32/198G01L1/18
Inventor 洪剑龙吴俊
Owner SOUTHEAST UNIV