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A kind of preparation method of graphene fiber composite material

A composite material, graphene technology, applied in the field of sensors, to achieve the effects of high linear response, excellent sensitivity, and simple production method

Active Publication Date: 2020-08-25
GUANGZHOU SPECIAL PRESSURE EQUIP INSPECTION & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, no research work has been reported on the use of graphene-coated optical fibers as sensing materials for Mach-Zehnder interferometric refractive index sensors, which can be applied to concentration detection

Method used

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  • A kind of preparation method of graphene fiber composite material
  • A kind of preparation method of graphene fiber composite material
  • A kind of preparation method of graphene fiber composite material

Examples

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Embodiment 1

[0027] This embodiment provides a kind of preparation method of graphene optical fiber composite material, please refer to figure 1 , including the following steps:

[0028] S1: Preparation of a composite film (PMMA / Graphene) of graphene (Graphene) and polymethyl methacrylate (PMMA) on copper foil. Specifically include:

[0029] S11: growing graphene on copper foil (Cu) by chemical vapor deposition.

[0030] S12: Put the copper foil with graphene on a clean and smooth substrate, stick the four sides of the copper foil with tape, so that the copper foil is evenly spread on the substrate, pay attention to laying the copper foil flat when sticking, Reduce creases, otherwise it is easy to apply uneven glue. In another embodiment, you can drop a few drops of deionized water on the round / square silicon wafer, spread the copper foil with graphene on the silicon wafer, and gently press the copper foil around with tweezers to ensure that the copper foil It is tightly attached to th...

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Abstract

Disclosed is a method for preparing a graphene optical fibre composite material. The preparation method comprises: preparing a composite film of graphene and polymethyl methacrylate on a copper foil; transferring the composite film onto a surface of a photonic crystal optical fibre by means of a copper dissolution method; and removing the polymethyl methacrylate in the composite film transferred onto the surface of the photonic crystal optical fibre, and then calcinating same to obtain a graphene optical fibre composite material. The graphene optical fibre composite material, as a sensing material of a refractive index sensor, has a high linear response and excellent sensitivity for a concentration detection of substances such as hydrogen sulfide gas and sucrose, has characteristics of a low cost, a simple manufacturing method and a high repeatability, and can be mass-produced and used.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a preparation method of a graphene optical fiber composite material. Background technique [0002] As a new type of two-dimensional nanomaterial, graphene is a carbon allotrope arranged in a hexagonal lattice by a single layer of carbon atoms. It has the characteristics of high strength, almost transparent, large specific surface area, and high stability. It can be used as an adsorption Material. There are a large number of microstructures inside the cross-section of photonic crystal fiber, which makes the operability space large, making it widely used in various fields such as optical communication, optical devices and optical sensing, and the most prominent application in the field of optical fiber sensing. It is a new type of sensing technology with strong anti-electromagnetic interference ability, high insulation, flame-proof and explosion-proof, flexible and flexible, suita...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/41G01N21/01
CPCG01N21/01G01N21/41G01N21/4133G01N2021/0112
Inventor 黄国家冯文林杨波李茂东彭志清尹宗杰李悦
Owner GUANGZHOU SPECIAL PRESSURE EQUIP INSPECTION & RES INST