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Gas sensor chip as well as manufacturing method and measuring system thereof

A technology of a gas sensor and a manufacturing method, which is applied in the direction of electrochemical variables of materials, etc., can solve the problems of difficulty in the preservation of the activity of the active layer, and achieve the effects of improving production efficiency and reducing costs.

Inactive Publication Date: 2012-08-15
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former is more difficult to preserve the activity of the processing and active layer, while the latter requires some expensive optical experimental equipment

Method used

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  • Gas sensor chip as well as manufacturing method and measuring system thereof
  • Gas sensor chip as well as manufacturing method and measuring system thereof
  • Gas sensor chip as well as manufacturing method and measuring system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Sensor chip P for testing food freshness

[0046] Food safety is a major issue related to the national economy and the people's livelihood, and eating food before it spoils is the safest way of consumption. Because food contains a lot of amino acids and proteins, ammonia gas will be emitted when the food is spoiled. The detection of ammonia gas is also a relatively simple method to detect the freshness of food. The modern way of serving food is generally to serve food in plastic film. Among them, the flexible substrate 1 of this embodiment is made of polyimide (PI), and the flexible electrode pair 2 is made with 1.3% PEDOT ink according to the above method, and the concentration of organic polythiophene is 5 mg / ml, and the concentration is 15 mg / ml P-type dopant material NOPF 6 Make the sensing layer 3, and then print each device on the surface of the flexible substrate 1 according to the method for making the gas sensor chip P of the present invention, so as to o...

Embodiment 2

[0048] Sensor chip P for testing food freshness

[0049] The flexible substrate 1 of this embodiment is made of polyimide (PI), and the flexible electrode pair 2 is made of 1.5% PEDOT:PSS ink according to the above method, and the concentration is 8 mg / ml organic polythiophene, and the concentration is 18 mg / ml P-type dopant material NOPF 6 Make the sensing layer 3, then according to the manufacturing method of the gas sensor chip P of the present invention, print each device on the surface of the flexible substrate 1 in turn, obtain the gas sensor chip P that can judge the freshness of food according to the measurement of ammonia gas, When there is doubt about the freshness of the food, the protective film 4 of the gas sensor chip P is removed, and the measuring electrode pair 11 is placed on the flexible electrode pair 2 of the gas sensor chip P. If the food emits ammonia gas, the ammonia gas will interact with the sensing layer 3 of the gas sensor chip P, increasing th...

Embodiment 3

[0051] The flexible substrate 1 of this embodiment is made of polyimide (PI), and the flexible electrode pair 2 is made with 1.7% PEDOT:PSS ink according to the above method, and the concentration is 10 mg / ml organic polythiophene, and the concentration is 20 mg / ml P-type dopant material NOPF 6 Make the sensing layer 3, then according to the manufacturing method of the gas sensor chip P of the present invention, print each device on the surface of the flexible substrate 1 in turn, obtain the gas sensor chip P that can judge the freshness of food according to the measurement of ammonia gas, When there is doubt about the freshness of the food, the protective film 4 of the gas sensor chip P is removed, and the measuring electrode pair 11 is placed on the flexible electrode pair 2 of the gas sensor chip P. If the food emits ammonia gas, the ammonia gas will interact with the sensing layer 3 of the gas sensor chip P, increasing the resistance of the sensing layer 3, which reduces t...

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Abstract

The invention relates to a gas sensor chip (P) and a measuring system (Q) of the gas sensor chip (P) as well as a manufacturing method of the gas sensor chip (P). The gas sensor chip (P) is a sensor which is used for preliminarily determining the freshness in the field of food, medicine and the like. The gas sensor chip (P) comprises a flexible substrate (1), flexible electrode pairs (2) arranged on the flexible substrate (1) and a sensing layer (3), wherein the sensing layer (3) is arranged between the flexible electrode pairs (2). In order to better apply the gas sensor chip (P) provided by the invention, the invention provides the measuring system (Q) comprising the gas sensor chip (P), a voltage source (9), an alarm circuit (8), an ampere meter (10) and a measuring electrode pair (11), wherein the voltage source (9), the alarm circuit (8), the ampere meter (10) and the measuring electrode pair (11) are connected in a measuring circuit in series, and the measuring electrode pair (11) is connected with the flexible electrode pairs (2) on the gas sensor chip (P). The manufacturing method provided by the invention greatly enhances the production efficiency of the gas sensor chip (P) and enlarges the application scope.

Description

technical field [0001] The invention belongs to the technical field of gas sensors, and in particular relates to a gas sensor chip structure and measurement system for food or medicine quality control, and a manufacturing method of the gas sensor. Background technique [0002] Sensors include many technologies, and sensor systems generally include two aspects. The first aspect is the chip of the sensor, which mainly includes the sensing layer. On the other hand, it is the signal measurement system, which provides the basis for interpretation after the interaction between the sensing layer of the sensor chip and the target substance is given by measuring a certain physical quantity such as resistance, current, voltage, and refractive index. With the improvement of people's living standards and the development of science, sensors are more and more closely related to our lives. As the number of samples increases, the cost of the chip becomes a very important factor when us...

Claims

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Application Information

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IPC IPC(8): G01N27/26
Inventor 潘革波李岩
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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