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Nanometer sensing needle and manufacturing method thereof

A sensor needle, nano technology, applied in the field of nano sensor needle and its preparation, can solve the problems that affect the detection stability and detection sensitivity, the sensitive film of polymer material is not firmly bonded, easy to fall off, etc., and achieve a large linear response range , Simple and convenient to make, combined with firm effect

Active Publication Date: 2014-02-19
HUBEI UNIV OF CHINESE MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem solved by the present invention is to provide a kind of detection stability that is good in view of the deficiency that the polymer material sensitive film existing in the prior art is not firmly bonded on the surface of the acupuncture needle base, is easy to fall off, and affects the detection stability and detection sensitivity. Nano sensor needle with wide pH linear response range and high sensitivity and preparation method thereof

Method used

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  • Nanometer sensing needle and manufacturing method thereof
  • Nanometer sensing needle and manufacturing method thereof
  • Nanometer sensing needle and manufacturing method thereof

Examples

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Embodiment 1

[0036] Such as figure 1 As shown, the nano-sensing needle includes a stainless steel acupuncture needle 1, and the tip surface of the front end of the stainless steel acupuncture needle is covered with an electrochemically deposited gold film 3 and a reduced graphene oxide layer electrochemically deposited on the surface of the gold film. 4. The surface of the needle shaft of the acupuncture needle is covered with an insulating layer 2 . Its preparation method is as follows:

[0037] (1) Pretreatment of acupuncture needles: Polish the stainless steel acupuncture needles with suede, then ultrasonicate them in absolute ethanol and ultrapure water for 10 minutes respectively, and dry them with nitrogen gas for later use;

[0038](2) Modification of gold particles: Use citrate gold salt solution as electrolyte, pretreated acupuncture needles as working electrodes, and gold wires as auxiliary electrodes. Current deposition method, depositing at a temperature of 50°C and a deposit...

Embodiment 2

[0047] The nano-sensing needle comprises a stainless steel acupuncture needle 1, the tip surface of the front end of the stainless steel acupuncture needle is sequentially covered with an electrochemically deposited gold film 3 and a reduced graphene oxide layer 4 electrochemically deposited on the surface of the gold film. The surface of the needle shaft of the acupuncture needle is covered with an insulating layer 2 . Its preparation method is as follows:

[0048] (1) Pretreatment of acupuncture needles: Polish the stainless steel acupuncture needles with suede, then blow them dry with nitrogen gas after ultrasonication in absolute ethanol and ultrapure water respectively;

[0049] (2) Modification of gold particles: Use citrate gold salt solution as electrolyte, pretreated acupuncture needles as working electrodes, and gold wires as auxiliary electrodes. Constant current deposition method, depositing at a temperature of 50°C and a deposition current of 0.03mA for 100s, dep...

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Abstract

The invention relates to a nanometer sensing needle and a manufacturing method of the nanometer sensing needle. The nanometer sensing needle comprises a stainless steel acupuncture needle, the surface of the needle point of the front end of the stainless steel acupuncture needle is covered with an electrochemically-deposited gold film and a reduction-oxidation graphene layer with the surface of the gold film electrochemically deposited in sequence, and the surface of the needle rod of the acupuncture needle is covered with an insulation film layer. The manufacturing method comprises the steps that the acupuncture needle is pretreated, wherein citric acid gold salt solutions are used as electrolytes, the pretreated acupuncture needle is used as a work electrode, a gold wire is used as an auxiliary electrode, and metal gold particles are deposited at the acupuncture needle point end at 40-60 DEG C through a constant current deposition method; the insulation layer of a needle body is coated, wherein the acupuncture needled decorated by the gold particles is soaked in reduction-oxidation graphene solutions and used as the work electrode, a Pt wire is used as the auxiliary electrode, Ag-AgCl is used as a reference electrode, and cyclic voltammetry scanning is carried out in the electric potential range of -0.5-0.5V through a cyclic voltammetry method. Combination is firm, stability is good, a wide pH linear response range is achieved, and manufacturing is simple and convenient.

Description

technical field [0001] The invention belongs to the field of sensor preparation, and in particular relates to a nano sensor needle and a preparation method thereof. Background technique [0002] Acupuncture and moxibustion medicine is a magnificent pearl in the treasure house of traditional Chinese medicine, with a history of more than 3,000 years, but the core theory of acupuncture and moxibustion medicine - meridians and acupoints are urgently to be clarified. Meridians unify the human body into an organic whole. Functionally, they can run qi and blood and regulate yin and yang; and acupoints are the special parts of the body where the qi of the viscera and meridians is infused on the body surface. They are the reaction points of diseases and the stimulation points of treatment. . It can be said that meridians are the regulatory network of the human body, and acupuncture points are the observation windows of the human body. However, traditional methods cannot effectively...

Claims

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Application Information

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IPC IPC(8): A61H39/08A61B5/00C25D3/48C25D9/04
Inventor 张国军王华宁勇梁忠唐丽娜
Owner HUBEI UNIV OF CHINESE MEDICINE
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