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Human blood glucose test chip based on gallium nitride material

A gallium nitride and chip technology, applied in the field of electronics, can solve problems affecting the depth of heterojunction potential wells, changes in device operating current, etc., to achieve the effects of increasing feasibility and accuracy, improving measurement accuracy, and reducing manufacturing costs

Active Publication Date: 2016-07-06
JIANGSU XGL OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The accumulation of such electrons at the gate of the HEMT device will form an electric field, which will be superimposed on the electric field generated by the gate voltage, and jointly affect the depth of the heterojunction potential well below, resulting in a change in the operating current of the device.

Method used

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  • Human blood glucose test chip based on gallium nitride material
  • Human blood glucose test chip based on gallium nitride material

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Experimental program
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Embodiment 1

[0017] Such as figure 1 As shown, the present invention includes a substrate 1, and the substrate 1 adopts one of a sapphire substrate, a silicon substrate, a gallium nitride substrate or a silicon carbide substrate, and a U-shaped gallium nitride layer 2 is formed on the upper surface of the substrate 1 by epitaxial growth. An N-type or U-type aluminum gallium nitride layer 3 is grown on the upper surface of the U-type gallium nitride layer 2, and a thin U-type gallium nitride coating layer 4 is grown on the upper surface of the aluminum gallium nitride layer 3; The gallium cladding layer 4 is provided with a source 5 and a drain 6, the source 5 and the drain 6 cover the U-shaped gallium nitride cladding layer 4, and form an ohmic contact with the U-shaped gallium nitride cladding layer 4 The source electrode 5 and the drain electrode 6 are separated from each other, and the gap between the source electrode 5 and the drain electrode 6 is a gate 9; the source electrode 5 and t...

Embodiment 2

[0022] In order to further improve the response of the chip to glucose concentration and reduce background noise, the GaN layer except the source 5, gate 9 and drain 6 can be removed by plasma etching (ICP), and the removal depth needs to reach the U-shaped Gallium nitride layer 2, in this way, the carriers can only form a loop through the channel under the gate, but cannot go around through the edge, because the channel under the gate is modulated by the electric field of the gate, so it can be more Sensitive and accurate reaction grid electric field changes, thereby measuring the concentration of glucose.

[0023] Such as figure 2 As shown: the human blood glucose test chip based on gallium nitride material includes a substrate 1, and the substrate 1 adopts one of a sapphire substrate, a silicon substrate, a gallium nitride substrate or a silicon carbide substrate, and the upper surface of the substrate 1 is processed by epitaxy Grow and form a U-type gallium nitride layer...

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Abstract

The invention relates to a blood glucose test chip based on a gallium nitride material. The blood glucose test chip comprises a substrate, and is characterized in that a U-shaped gallium nitride layer is formed on the upper surface of the substrate by growing, an aluminum gallium nitrogen layer is formed on the upper surface of the U-shaped gallium nitride layer by growing, and a U-shaped gallium nitride coverage layer is formed on the upper surface of the aluminum gallium nitrogen layer by growing; the U-shaped gallium nitride coverage layer is provided with a source and a drain which form ohmic contact with the U-shaped gallium nitride coverage layer; the source and the drain are mutually separated, a gap between the source and the drain is provided with a grid, and a source routing electrode and a drain routing electrode are deposited on the source and the drain, respectively; an insulation layer covers the upper surface of the chip, and the insulation layer covers areas on the upper surface of the chip, except the source routing electrode, the drain routing electrode and the grid; the surface of the grid is coated with bio-enzyme. According to the invention, by using the amplification effect of a high electron mobility transistor (HEMT), electrons produced in the process of glucose reaction are detected precisely, and then the concentration of blood glucose is obtained.

Description

technical field [0001] The invention relates to a human blood sugar testing chip, in particular to a human blood sugar testing chip based on a gallium nitride material, and belongs to the field of electronic technology. Background technique [0002] Human blood glucose level is a commonly used and important indicator of human health. Especially in recent years, with the improvement of people's living standards, more and more people suffer from diabetes, and the family and routine of blood glucose monitoring are becoming more and more important. Since human blood sugar mainly refers to glucose, the detection of human blood sugar refers to the detection of the concentration of glucose contained in human blood. At present, the common human blood sugar testing instruments on the market are mainly through the reaction of glucose gaining and losing electrons under the action of biological enzymes, and the generated electrons are transferred to the electrodes by the conductive medi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/414
Inventor 柯志杰郭文平邓群雄黄慧诗
Owner JIANGSU XGL OPTOELECTRONICS