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

Laser preparation method of copper-based flexible wearable pressure sensor

A pressure sensor and flexible-based technology, applied in the field of laser micro-nano manufacturing, to achieve the effects of increasing processing accuracy, improving electrical conductivity and stability, and simplifying the manufacturing process

Inactive Publication Date: 2018-02-16
BEIJING UNIV OF TECH
View PDF6 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to solve the problems of three-dimensional processing and high sensitivity of the existing pressure-sensitive copper-based sensor

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
  • Laser preparation method of copper-based flexible wearable pressure sensor
  • Laser preparation method of copper-based flexible wearable pressure sensor
  • Laser preparation method of copper-based flexible wearable pressure sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1) Mix copper nitrate trihydrate, ethylene glycol, and water in a mass ratio of 10:10:1 and stir until the copper nitrate is completely dissolved;

[0036] 2) Stir and heat the solution to 100°C and keep it warm for 10 minutes at a stirring rate of 300 rpm. This process needs to be carried out in a ventilated environment;

[0037] 3) After that, the solution was naturally cooled to room temperature, and formic acid was added dropwise and stirred, wherein the volume ratio of formic acid to ethylene glycol was 100:1;

[0038] 4) Ultrasound the solution for 30 minutes at an ultrasonic frequency of 20 kHz, and stir evenly;

[0039] 5) Spin-coat the solution on the glass substrate at a spin-coating speed of 1000 rpm;

[0040] 6) Scan the copper nitrate ethylene glycol film with a semiconductor laser in the 808 nm band, and focus with a 10x objective lens. The laser power before focusing is 3W, and the scanning speed is 5 mm / s;

[0041] 7) excess copper nitrate ethylene gly...

Embodiment 2

[0045] The present embodiment is different from Example 1 in that: copper nitrate trihydrate, ethylene dihydrate described in step 1)

[0046] Alcohol and water are in a mass ratio of 15:10:1. Others are the same as in Example 1.

Embodiment 3

[0048] The difference between this embodiment and Example 1 or 2 is that the volume ratio of formic acid to ethylene glycol in step 3) is 20:1. Others are identical with embodiment 1 or 2.

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 a laser preparation method of a copper-based flexible wearable pressure sensor, and belongs to the field of laser micro-nano manufacturing. The preparation of copper electrodes in the sensor is aided by an infrared band laser. Preparation materials of the copper electrodes consist of copper nitrate trihydrate, ethylene glycol, formic acid, and water. A film is first coated on glass,then laser direct writing is performed and the polydimethylsiloxane is used for transcription. A flexible material of the sensor is polydimethylsiloxane. The flexible pressure sensor uses copper as the electrode material, and the cost of raw materials is greatly reduced. The laser direct writing method is adopted, the processing precision is high, the processing method is flexible, and non-contactprocessing can be achieved. The polydimethylsiloxane is used as a flexible substrate to encapsulate the copper electrodes, so that the electrode portion has characteristics such as oxidation resistance and corrosion resistance. In general, the method in the invention has the advantages of low manufacturing cost, simple and practical process, and long service life of the sensor.

Description

technical field [0001] The invention belongs to the technical field of laser micro-nano manufacturing, and relates to laser direct writing processing equipment, in particular to a laser direct writing reduction copper salt material used to prepare a wearable pressure-sensitive sensor. Background technique [0002] At present, wearable devices have greatly improved people's production efficiency and living standards in the fields of human-computer interaction, information identification, medical health and other production and living fields. At the same time, due to the wide application and easy operation methods of wearable devices, they are increasingly favored by ordinary people. [0003] Generally speaking, flexible wearable devices usually need to process sensitive devices on a flexible substrate, which needs to have certain ductility, bending performance and better recovery ability after deformation. When an external signal (such as sound, light, electricity or externa...

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
IPC IPC(8): G01L1/22
CPCG01L1/2293
Inventor 胡安明白石
Owner BEIJING UNIV OF TECH