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Pulmonary alveolus bionic structure based flexible self-driving gas sensor and preparation method thereof

A gas sensor and bionic technology, applied in scientific instruments, instruments, measuring devices, etc., can solve the problems of low output power density, limited wide application, strict material requirements, etc., to achieve stable output performance, small measurement error, and processing. low cost effect

Inactive Publication Date: 2018-07-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, electromagnetic induction generators and piezoelectric generators generally have defects such as complex structures, strict requirements on materials, and high cost; electrostatic pulse generators are deficient in miniaturization, light weight, and integration, and their output power density is low , cannot meet the needs of collecting biomechanical energy such as human body movement; existing electrostatic induction generators have defects such as large volume and narrow applicability
The above defects limit the wide application of generators based on the conversion of mechanical energy into electrical energy in practice.

Method used

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  • Pulmonary alveolus bionic structure based flexible self-driving gas sensor and preparation method thereof
  • Pulmonary alveolus bionic structure based flexible self-driving gas sensor and preparation method thereof
  • Pulmonary alveolus bionic structure based flexible self-driving gas sensor and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A flexible gas self-actuated sensor based on alveolar bionics structure such as figure 1 As shown, it is characterized in that: it includes an insulating base stacked from bottom to top, a first friction member and a second friction member;

[0044] The first friction component includes: a first triboelectric layer, an electrode layer and a gas-sensitive thin film layer, the first triboelectric layer has a first surface and a second surface oppositely arranged, and the first surface is deposited with gas Sensitive material, electrode material is deposited on the second surface;

[0045] The second friction component includes: a second triboelectric layer, the second triboelectric layer is in contact with the surface where the gas-sensitive thin film layer is located on the first triboelectric layer, and the edges of the two are fixed, and the second triboelectric layer The layer is an elastic film material that deforms with changes in air pressure;

[0046] The first ...

Embodiment 2

[0054] The manufacturing process of a flexible self-driven nitrogen dioxide sensor based on the alveolar bionic structure is as follows: figure 2 As shown, it specifically includes the following steps:

[0055] (1), select the plexiglass substrate 1 of 1mm, the nylon film 3 of the latex film 4,75 μm of 50 μm for use, and adopt chemical reagents such as acetone, ethanol to clean and dry it;

[0056] (2), the organic glass 1 that will clean, latex film 4, nylon film 3 are cut into the square structure of 4cm * 4cm by laser cutting machine;

[0057] (3), at 4cm * 4cm nylon film 3 one-sided vapor deposition layer of copper is used as electrode layer, the present invention does not limit to the deposition mode of electrode layer, present embodiment adopts and uses thermal evaporation method; By laser cutting machine in The center of the square nylon film plated with the copper electrode layer 2 and the center of the plexiglass substrate 1 are cut to form a circular air hole with ...

Embodiment 3

[0066]This embodiment is intended to produce a flexible self-driven ammonia sensor based on alveolar bionics structure. Compared with embodiment 2, except that the material of the gas-sensitive film layer 7 is replaced by polyaniline film, the rest of the steps are the same as embodiment 2.

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Abstract

The invention relates to a pulmonary alveolus bionic structure based flexible self-driving gas sensor belonging to the technical field of gas sensors. The gas sensor comprises insulating bases which are sequentially laminated from top to bottom, a first friction electrification layer with two sides respectively deposited with an electrode layer and a gas sensitive film layer and a second frictionelectrification layer adopting an elastic material, wherein the first and second friction electrification layers are fixed at the peripheral edge; a gas channel is formed in the center of the insulating bases, an electrode layer, the first friction electrification layer and the gas sensitive film layer; under the action of air flow, unfixed parts of the first and second friction electrification layers form contact-separation circulation to generate induced charge, so as to output an electric signal with gas concentration characteristics to the outside. Compared with conventional gas sensors, gas concentration can be detected spontaneously without an external power supply system, the output performance of the sensor is steady, the structure is light and easy to carry, and the gas sensor iseasy to mount and place, simple to make, low in processing cost, and favorable for realizing large scale production of self power supply respiration sensors.

Description

technical field [0001] The invention belongs to the technical field of gas sensors, in particular to a flexible self-driven gas sensor based on alveolar bionics structure and a preparation method thereof. Background technique [0002] Gas sensors are widely used in military, meteorological, agricultural, industrial (especially textile, electronics, food), medical, construction, and household appliances. There are many kinds of poisonous and harmful gases in the airtight environment system of manned spaceflight, fighter plane, submarine, ship, etc., which seriously threaten the life safety of personnel. The discharge of industrial waste gas and automobile exhaust is one of the main factors causing environmental pollution. Home manufacturing and decoration The exhaust gas released during the process has adverse effects on the human immune system and reproductive system and even has carcinogenic effects. Therefore, the study of sensor technology for toxic and harmful gases has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/60
CPCG01N27/60
Inventor 苏元捷杨铂汐谢光忠李双定潘虹张秋平太惠玲杜晓松蒋亚东
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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