Flexible graphite alkene nanometer wall magnetic field detection device and preparation method

A graphene nano wall and detection device technology, which is applied in the measurement device, the size/direction of the magnetic field, and the use of permanent magnets for magnetic field measurement, etc., can solve the problems of low measurement accuracy, low sensitivity, poor stability, etc., and achieve high measurement accuracy , high sensitivity and high stability

Active Publication Date: 2016-03-02
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the object of the present invention is to provide a graphene nano-wall magnetic field detection device and a preparation method thereof, which overcome the common problems of existing magnetic field detection devices such as high price, high power consumption, low sensitivity, low measurement accuracy and poor stability. and other issues, and has a flexible substrate, which can be widely used in occasions that require flexible magnetic field detection devices such as the human body

Method used

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  • Flexible graphite alkene nanometer wall magnetic field detection device and preparation method
  • Flexible graphite alkene nanometer wall magnetic field detection device and preparation method
  • Flexible graphite alkene nanometer wall magnetic field detection device and preparation method

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Embodiment 1

[0031] as per figure 1 The schematic flow chart of the preparation steps is shown to prepare the flexible graphene nano-wall magnetic field detection device, where 1 represents the graphene nano-wall film, 2 represents the parallel electrodes, 3 represents the flexible substrate, 4 represents the magnetic field sensing layer, and 5 represents the substrate.

[0032] Specific steps are as follows:

[0033] 1) Cleaning of the substrate: ultrasonically clean the copper foil 5 in acetone, ethanol and deionized water for 5 minutes respectively, and dry it with nitrogen gas for later use;

[0034] 2) Graphene growth: place the dried copper foil 5 in the vacuum chamber of the CVD system, and feed a mixed gas of hydrogen and methane with a volume ratio of 2:3 into the vacuum chamber at a temperature of 550°C and a pressure of 20Pa Under the conditions of growth for 30min, the graphene nano-wall 1 was obtained, and the graphene nano-wall was scanned by an electron microscope, and the ...

Embodiment 2

[0040] Prepare a flexible graphene nano-wall magnetic field detection device according to the schematic diagram of the preparation steps shown in Question 1. The specific steps are as follows:

[0041] 1) Substrate cleaning: place the quartz 5 in acetone, ethanol and deionized water for ultrasonic cleaning respectively for 5 minutes, and dry it with nitrogen for later use;

[0042] 2) Graphene growth: place the dried quartz in the vacuum chamber of the CVD system, and feed a mixture of hydrogen and methane with a volume ratio of 2:3 into the vacuum chamber at a temperature of 700°C and a pressure of 100Pa. Grow for 25 minutes to obtain graphene nanowall 1;

[0043] 3) Coating flexible substrate material: coating TPU3 on the surface layer of the graphene nanowall 1, and then curing in a vacuum oven at a temperature of 100°C for 1 hour;

[0044] 4) Coating the magnetic field sensing layer material: peeling off the graphene nanowall 1 from the substrate 5, and coating the magnet...

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Abstract

The invention discloses a flexible graphite alkene nanometer wall resistance type magnetic field detection device and a preparation method. The flexible graphite alkene nanometer wall magnetic field detection device comprises a detection member and parallel electrodes; the detection member consists of a pressure sensitive layer, a magnetic field induction layer and a flexible substrate; the pressure sensitive layer and the magnetic field induction layer are adhered to two sides of the flexible substrate; the parallel electrodes are arranged on the surface of the pressure sensitive layer; and the pressure sensitive layer is an alkene nanometer wall. The flexible graphite alkene nanometer wall resistance type magnetic field detection device overcomes the insufficiency of the current regular magnetic field detection device, has advantages of low power consumption, high sensitivity, high measurement accuracy and high stability, adopts the flexible substrate and can be widely applied in the occasions where the human body needs the flexible magnetic field detection device.

Description

technical field [0001] The invention belongs to the technical field of magnetic field detection, and relates to a magnetic field detection device and a preparation method thereof, in particular to a flexible graphene nano-wall magnetic field detection device and a preparation method thereof. Background technique [0002] After the magnetic field in the environment acts on the ferromagnetic material, the ferromagnetic material will be attracted by the magnetic field, thereby extruding the graphene nano-wall and causing the change of the magnetic field strength to be converted into an electrical signal. Based on this principle, a magnetic field detection device is made. Through the magnetic field detection device to measure the magnetic field strength of the environment, it is widely used in scientific research, national defense construction, industrial production, daily life and other fields. Now the application of weak magnetic field detection is mainly in the following aspe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/038
CPCG01R33/0052G01R33/0385
Inventor 魏大鹏袁康杨俊孙泰于乐永申钧史浩飞杜春雷
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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