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Gas chamber structure for gas sensing and manufacturing method of gas chamber structure

A technology of gas sensing and gas chamber, which is applied in the field of gas sensing, can solve problems such as inability to miniaturize, single material, and difficulty in coupling, and achieve the effects of poor mechanical properties, excessive volume, and easy miniaturization

Pending Publication Date: 2019-08-16
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides a gas chamber structure for gas sensing, which solves the problems of the existing metal gas chambers such as bulkiness, large volume, difficulty in coupling, and inability to miniaturize, as well as the poor mechanical properties, fragility, and Disadvantages of single material and inability to cover the infrared band

Method used

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  • Gas chamber structure for gas sensing and manufacturing method of gas chamber structure
  • Gas chamber structure for gas sensing and manufacturing method of gas chamber structure
  • Gas chamber structure for gas sensing and manufacturing method of gas chamber structure

Examples

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Effect test

Embodiment 1

[0047] In the real-time example 1 of the present invention, a gas chamber structure for gas sensing is firstly provided, which includes:

[0048] The outermost polymer PPSU outer cladding is used to provide sufficient mechanical support for the entire fiber. The omnidirectional reflection layer connected with the polymer outer cladding is used to confine the transmitted laser light in the fiber core. The air core located in the innermost layer is a hollow core structure, which is used to provide transmission channels for gas and laser.

[0049] The polymer outer cladding material is PPSU, which has good tensile properties and flexibility, and the thickness of PPSU is 500 μm. The omnidirectional reflection layer structure is a multi-material dielectric reflection structure. Multi-material dielectric reflection structure made of PPSU and As 2 Se 3 Alternate composition, PPSU and As 2 Se 3 With similar thermodynamic properties, PPSU and As 2 Se 3 The refractive index diff...

Embodiment 2

[0059] In the real-time example 2 of the present invention, a gas chamber structure for gas sensing is firstly provided, which includes:

[0060] The outermost layer of UV-cured resin is used to provide sufficient mechanical support for the entire fiber. The omnidirectional reflection layer connected with the outer cladding is used to confine the transmitted laser light in the fiber core. The air core located in the innermost layer is a hollow core structure, which is used to provide transmission channels for gas and laser.

[0061] The polymer outer cladding material is an ultraviolet curing resin with good tensile properties and flexibility, and the thickness of the polymer material is 900 μm. The omnidirectional reflection layer structure is a multi-material dielectric reflection structure, and the multi-material dielectric reflection structure is composed of PPSU and As 2 Se 3 Alternate composition, PPSU and As 2 Se 3 With similar thermodynamic properties, the PPSU an...

Embodiment 3

[0071] In the real-time example three of the present invention, a gas chamber structure for gas sensing is firstly provided, which includes:

[0072] The outermost layer of polymer UV-cured resin is used to provide sufficient mechanical support for the entire fiber. The omnidirectional reflection layer connected with the polymer outer cladding is used to confine the transmitted laser light in the fiber core. The air core located in the innermost layer is a hollow structure, which is used to provide transmission channels for gas and laser.

[0073] The polymer outer cladding material is an ultraviolet curing resin with good tensile properties and flexibility, and the thickness of the polymer material is 20 μm. The omnidirectional reflection layer structure is a multi-material dielectric reflection structure, and the multi-material dielectric reflection structure is composed of PPSU and As 2 Se 3 Alternate composition, PPSU and As 2 Se 3 With similar thermodynamic propertie...

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Abstract

The invention provides a gas chamber structure for gas sensing and a manufacturing method of the gas chamber structure. The gas chamber structure comprises an outer wrapping layer (1), a reflection layer (2) and a hollow core structure (3). The outer wrapping layer is located on an outermost layer, and the outer wrapping layer is a polymer outer wrapping layer. The reflection layer is an omni-directional reflection layer, and the omni-directional reflection layer is located on the inner side of the polymer outer wrapping layer. The inner side of the omni-directional reflection layer is provided with the hollow core structure, and the hollow core structure is a hollow channel for light and gas transmission. The gas chamber structure provided by the invention can solve the problems that an existing metal gas chamber is heavy, excessively large in size and difficult to couple and cannot be microminiaturized, and overcome the shortcomings that an existing optical fiber type gas chamber ispoor in mechanical performance, weak, single in material and incapable of covering an infrared wave band. Meanwhile, the processes of a thermal evaporation method, a thin film winding method, a hot drawing method and a coating method are used for preparing the flexible, low-loss and easy-to-couple microminiaturized gas chamber structure for gas sensing.

Description

technical field [0001] The invention relates to the field of gas sensing, in particular to a gas chamber structure for gas sensing and a manufacturing method thereof. Background technique [0002] With the automation, integration, and miniaturization of all walks of life today, sensors, as the main means of detection and control systems at this stage, have also begun to develop in the direction of miniaturization and integration. As an important branch of sensing technology, gas sensors have been widely used to detect various toxic, harmful, explosive and volatile substances, as well as to monitor the greenhouse effect and air pollution. In the field of biomedicine, gas sensors can be used for disease analysis by checking the composition and concentration of exhaled gas. In the field of defense, gas sensors can be used for detection of toxic gases and flammable and explosive gases. In the field of industrial manufacturing, gas sensing can be used such as SF 6 And other sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3504
CPCG01N21/3504
Inventor 陶光明徐文鑫任志禾
Owner HUAZHONG UNIV OF SCI & TECH
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