Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Three-dimensional carbon-based pressure sensor making method

A pressure sensor, carbon-based technology, used in sensors, medical science, diagnostic recording/measurement, etc., can solve the problems of high process requirements, large environmental pollution, poor portability, etc., and achieve good biocompatibility, high sensitivity, and structure. simple effect

Pending Publication Date: 2016-07-20
南京清辉新能源有限公司
View PDF3 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, gold nanowire pressure sensors still have disadvantages such as high price, complex structure, and high process requirements.
[0007] In short, the disadvantages of existing pressure sensors, such as complex preparation process, high environmental pollution, expensive preparation cost, non-foldable, and poor portability, need to be further improved.

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
  • Three-dimensional carbon-based pressure sensor making method
  • Three-dimensional carbon-based pressure sensor making method
  • Three-dimensional carbon-based pressure sensor making method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] The schematic flow chart of the present invention is as figure 1 As shown, the specific steps of the preparation method of the three-dimensional carbon-based pressure sensor include:

[0028] Step 1, placing the metal nickel foam in a chemical vapor deposition furnace, feeding methane and hydrogen to react to prepare graphene;

[0029] Step 2, the metal nickel foam prepared with graphene obtained in step 1 is soaked in the mixed aqueous solution of ferric nitrate and hydrochloric acid, and the nickel foam is removed to obtain foamy graphene;

[0030] Step 3, washing the graphene foam with water, and then drying;

[0031] Step 4, placing carbon-based fibers on the top and bottom of the foamed graphene as a flexible electrode material;

[0032] Step 5: Pouring polydimethylsiloxane on the foamed graphene and the carbon-based fiber flexible electrode, and curing it into a pressure sensor device.

[0033] The prepared pressure sensor was subjected to the extrusion-recover...

Embodiment example 1

[0038] Implementation Case 1: Testing of Physiological Signals

[0039] Attach the prepared pressure sensor to the wrist pulse, connect it to the digital source meter,

[0040] (i) Monitor the pulse rate when awake and the pulse rate during sleep.

[0041] (ii) Attach the pressure sensor near the throat, read it from 1 to 10, and the digital source meter records the curve of the current flowing through the device with time, such as figure 2 shown. Pick out the three numbers 1, 3, and 5, read each number three times, compare the original curves from 1 to 10, and find that their current waveforms are consistent. This shows that our pressure sensor can detect very sensitively the weak vibration pressure generated when speaking.

Embodiment example 2

[0043] Put the pressure sensor on the iPhone6, and set the iPhone6 ​​to vibration mode. When dialing the mobile phone, the pressure sensor detects the vibration waveform of the mobile phone in different vibration modes, and obtains a stable current-time diagram of different waveforms, such as image 3 shown.

[0044]The preparation method of the present invention is simple and easy, the raw materials are cheap, and the preparation process is simple. Firstly, a pressure sensor is prepared by preparing a novel carbon-based material foamed graphene. The preparation method of this material is mature, cheap and easy to operate. Afterwards, the prepared foamed graphene is combined with the flexible carbon fiber electrode, and then polydimethylsiloxane PDMS is poured on it, and the pressure sensor device is prepared by curing.

[0045] As can be seen from the above specific examples, the present invention is sensitive to low pressure:

[0046] 1. The pressure sensor of the present ...

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

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a three-dimensional carbon-based pressure sensor making method, and relates to the technical field of pressure sensors.The method comprises the steps that foam metal nickel is put into a chemical vapor deposition furnace, methane and hydrogen are introduced for a reaction, and graphene is obtained; foam metal nickel which obtains graphene in the first step is soaked in a mixed aqueous solution of ferric nitrate and hydrochloric acid, foam metal nickel is removed, and foamed graphene is obtained; foamed graphene is washed with water, and drying is conducted; carbon-based fibers are arranged on the top and bottom of foamed graphene respectively to serve as a flexible electrode material; polydimethylsiloxane is poured on foamed graphene and carbon-based fiber flexible electrodes, curing is conducted, and a pressure sensor device is obtained.The pressure sensor has good biocompatibility with a human body and can be closely attached to the skin of the human body to collect physiological signals quantificationally in real time.

Description

technical field [0001] The invention discloses a preparation method of a three-dimensional carbon-based pressure sensor and relates to the technical field of pressure sensors. Background technique [0002] With the rapid development of information technology, the amount of information people have to deal with in daily life is increasing. Traditional rigid electronic devices can no longer meet people's requirements for lighter, faster, smaller and highly integrated electronic devices. . The solution to future electronics lies in the development of flexible, deformable, and human-friendly devices. In recent years, flexible (bending, stretching) electronics have attracted extensive attention due to their applications in different fields, such as sensing skin for biomimetic robots, wearable communication devices, and biomimetic integrated devices. [0003] Electronic skin, electronic muscle, electronic fiber, etc. all represent a new principle, large area, and shape-plastic in...

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): A61B5/00
CPCA61B5/00A61B2562/12
Inventor 金钟朱红飞
Owner 南京清辉新能源有限公司
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com