CN104164696A - Preparation apparatus for microelectrode needle dust - Google Patents
Preparation apparatus for microelectrode needle dust Download PDFInfo
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- CN104164696A CN104164696A CN201310188116.8A CN201310188116A CN104164696A CN 104164696 A CN104164696 A CN 104164696A CN 201310188116 A CN201310188116 A CN 201310188116A CN 104164696 A CN104164696 A CN 104164696A
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- wire electrode
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Abstract
The invention relates to a preparation apparatus for microelectrode needle dust. The preparation apparatus comprises an electrolytic tank used for holding of an electrolyte; a negative electrode rack is arranged below the liquid level of the electrolyte in the electrolytic tank; a negative electrode ring is arranged on the negative electrode rack; the negative electrode rack is further provided with a circular cover plate; the cover plate is arranged to be concentric to the negative electrode ring and is provided with a circular hole at the center of the cover plate; an electrode wire is vertically arranged in the circular hole and is fixed through a support; the negative electrode ring is connected with the negative electrode of a power supply through a lead; and the electrode wire is connected with the positive electrode of the power supply through a lead. Compared with the prior art, the apparatus provided by the invention has the advantages of short experimental response time, simple experimental equipment, good quality of prepared needle dust, relaxed requirements on conduction time and strong operationality.
Description
Technical field
The present invention relates to a kind of preparation facilities of microelectrode pin dirt, particularly a kind of device of preparing microelectrode pin dirt with electrochemical etching method.
Background technology
Biometric mechanisms people refers to motion function, the power generating system that utilizes animal body, from the impression of animal movement, enters or innervation staff, realizes the artificial control to the motion of animal and some behavior.Biorobot's technology is one of field of the means of subsistence of current development in science and technology.The motion control of animal is be unable to do without to high performance metal microelectrode or microelectrode arrays all, and probe microelectrode has the unique advantage that density is high, arrange in order and can realize cubical array structure.Therefore in electric physiology, be widely used.In general, diameter can record electrical activity of neurons at wire and the conductor of to tens micron, but less dirt end size is difficult for making Brain shift, and is conducive to enter cerebral tissue, microelectrode is directly contacted with the neuraxis, thereby performance stimulate and writing function better.The also easier excited dirt end high neurone of threshold value around simultaneously, so pin dirt technique is to manufacture the gordian technique of probe microelectrode.
In prior art, the preparation method of pin dirt has mechanical forming method, ion beam milling method, means of electron beam deposition, field evaporation method and electrochemical erosion method etc.Wherein electrochemical erosion method is removed material with the form of ion, and convenience and high-efficiency, is conventional pin dirt preparation method.But this method is high to the response time requirement of Controlling System, and equipment cost is high, is not suitable for electric Physiological Experiment chamber and uses.
Summary of the invention
The present invention is directed to the problem that prior art exists, a kind of microelectrode pin dirt preparation facilities is provided, to simplify the structure of the preparation facilities of pin dirt, reduce preparation cost, and preparation method controls convenience, simple.
The object of the present invention is achieved like this, a kind of microelectrode pin dirt preparation facilities, comprise for holding the electrolyzer of electrolytic solution, electrolysis liquid surface in described electrolyzer has cathode carrier, described cathode carrier is provided with cathode loop, in described cathode carrier, be also provided with circular cover, described cover plate is provided with circular hole with the concentric setting of cathode loop and center, in described circular hole, be vertically provided with wire electrode, described wire electrode is fixed by support, described cathode loop is connected by wire with the negative electrode of power supply, and described wire electrode is connected by wire with the anode of power supply.
For ease of realizing the present invention, described cathode loop is the annulus that the Stainless Steel Wire of φ 1mm is coiled into φ 23mm.
For further realizing the present invention, described wire electrode is φ 0.1mm nichrome wire.
For realizing object of the present invention, the NaCl solution that described electrolytic solution is 2.5g～6.0g/L.
The method that adopts device of the present invention to prepare microelectrode pin dirt comprises the steps:
A) by diameter, be that 0.1mm nichrome wire immerses in the NaOH that mass concentration is 30%, 1 hour insulation layer by nichrome wire surface of 100 ℃ of insulations of constant temperature is removed;
B) annulus that is coiled into φ 23mm with the Stainless Steel Wire of φ 1mm is as cathode loop, described cathode loop is placed in a cathode carrier, in cathode carrier, be placed in electrolytic solution and upside is placed a circular cover, and cover plate is concentric with cathode loop, in the middle of cover plate, offer a φ 1mm hole, nichrome wire by step in a) vertically arrange Bing Congkong center through and by support, wire electrode is fixed to the degree of depth being submerged below electrolytic solution 1mm in wire electrode lower end;
C) cathode loop is connected with bipolar power supply by wire respectively with wire electrode, energising 20～40s, makes wire electrode be etched into uniform pin dirt type.
During the present invention uses, after anode and cathodal closing, at wire electrode, form electric field around, wire electrode is positioned at electric field central authorities, and the pin dirt therefore corroding is mellow and full evenly.The central position strength of electric field of cathode loop is maximum, along the wire electrode strength of electric field that makes progress, weakens gradually.The local galvanic corrosion speed that strength of electric field is large is fast, and the local galvanic corrosion speed that strength of electric field is little is slow.Through corrosion after a while, just can obtain required pin dirt.Due in the electric field of wire electrode in a gradual change with the passing of upper time, the disappearance that is corroded of old pin dirt, new pin dirt forms again.Compared with prior art, the experimental Response time is short for device of the present invention, and experimental installation is simple, and the pin dirt quality of preparation is good, to requiring not strict, workable conduction time.
Accompanying drawing explanation
Fig. 1 is the structure iron of microelectrode pin dirt preparation facilities of the present invention.
Fig. 2 is the strong distribution plan of electricity in wire electrode ambient water plane.
Embodiment
Below in conjunction with accompanying drawing, method of the present invention is described in detail.
Be illustrated in figure 1 microelectrode pin dirt preparation method's of the present invention device, comprise for holding the electrolyzer 5 of electrolytic solution, electrolysis liquid surface in electrolyzer 5 has cathode carrier and states cathode carrier and be provided with cathode loop 1, in cathode carrier, be also provided with circular cover, cover plate is provided with circular hole with the concentric setting of cathode loop and center, is vertically provided with wire electrode 3 in circular hole, and wire electrode 3 is fixing by support 4, cathode loop 1 is connected by wire with the negative electrode of power supply 2, and wire electrode 3 is connected by wire with the anode of power supply 2; Cathode loop 1 is coiled into the annulus of φ 23mm for the Stainless Steel Wire of φ 1mm; Wire electrode 3 is φ 0.1mm nichrome wire; Electrolytic solution is the NaCl solution of 2.5g～6.0g/L.
Method of the present invention comprises the steps:
A) by diameter, be that 0.1mm nichrome wire immerses in the NaOH that mass concentration is 30%, 1 hour insulation layer by nichrome wire surface of 100 ℃ of insulations of constant temperature is removed;
B) annulus that is coiled into φ 23mm with the Stainless Steel Wire of φ 1mm is as cathode loop 1 and be placed in a cathode carrier, in cathode carrier, be placed in electrolytic solution and upside is placed a circular cover, and cover plate is concentric with cathode loop 1, in the middle of cover plate, offer a φ 1mm hole, nichrome wire by step in a) vertically arranges that Bing Congkong center is passed and to pass through support 4 fixing by wire electrode 3, the degree of depth being submerged below electrolytic solution 1mm in wire electrode 3 lower ends; Wherein, the NaCl that electrolytic solution is 2.5g～6.0g/L, temperature is 20 ℃.
C) cathode loop 1 is connected with bipolar power supply 2 by wire respectively with wire electrode 3, energising 20～40s, makes wire electrode 2 be etched into uniform pin dirt type.
Adopt method of the present invention, after anode and cathodal closing, at wire electrode 3, form electric field as shown in Figure 2 around, wire electrode 3 is positioned at electric field central authorities, and the pin dirt therefore corroding is mellow and full evenly.The central position strength of electric field of cathode loop 1 is maximum, along wire electrode 3 upwards strength of electric field weaken gradually.The local galvanic corrosion speed that strength of electric field is large is fast, and the local galvanic corrosion speed that strength of electric field is little is slow.Through corrosion after a while, just can obtain required pin dirt.Due in the electric field of wire electrode 3 in a gradual change with the passing of upper time, the disappearance that is corroded of old pin dirt, new pin dirt forms again.Compared with prior art, the experimental Response time is short for method of the present invention, and experimental installation is simple, and the pin dirt quality of preparation is good, to requiring not strict, workable conduction time.
The present invention is not limited to above-described embodiment; every on the basis of technical scheme disclosed by the invention; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some replacements and distortion to some technical characterictics wherein, these replacements and distortion are all in the scope of protection of the invention.
Claims (4)
1. a microelectrode pin dirt preparation facilities, it is characterized in that, comprise for holding the electrolyzer of electrolytic solution, electrolysis liquid surface in described electrolyzer has cathode carrier, described cathode carrier is provided with cathode loop, in described cathode carrier, be also provided with circular cover, described cover plate is provided with circular hole with the concentric setting of cathode loop and center, in described circular hole, be vertically provided with wire electrode, described wire electrode is fixed by support, described cathode loop is connected by wire with the negative electrode of power supply, and described wire electrode is connected by wire with the anode of power supply.
2. microelectrode pin dirt preparation facilities according to claim 1, is characterized in that, described cathode loop is the annulus that the Stainless Steel Wire of φ 1mm is coiled into φ 23mm.
3. microelectrode pin dirt preparation facilities according to claim 1, is characterized in that, described wire electrode is φ 0.1mm nichrome wire.
4. microelectrode pin dirt preparation facilities according to claim 1, is characterized in that the NaCl solution that described electrolytic solution is 2.5g～6.0g/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310188116.8A CN104164696A (en) | 2013-05-18 | 2013-05-18 | Preparation apparatus for microelectrode needle dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310188116.8A CN104164696A (en) | 2013-05-18 | 2013-05-18 | Preparation apparatus for microelectrode needle dust |
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| Publication Number | Publication Date |
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| CN104164696A true CN104164696A (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310188116.8A Pending CN104164696A (en) | 2013-05-18 | 2013-05-18 | Preparation apparatus for microelectrode needle dust |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106618598A (en) * | 2016-11-15 | 2017-05-10 | 惠州市力道电子材料有限公司 | Tungsten alloy micro-needle electrode capable of limiting piercing depth, preparation method thereof, and blood glucose monitoring device |
| CN109328032A (en) * | 2017-05-19 | 2019-02-12 | 深圳市得道健康管理有限公司 | Microneedle electrodes, channels and collaterals detection device and its method for customizing |
-
2013
- 2013-05-18 CN CN201310188116.8A patent/CN104164696A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106618598A (en) * | 2016-11-15 | 2017-05-10 | 惠州市力道电子材料有限公司 | Tungsten alloy micro-needle electrode capable of limiting piercing depth, preparation method thereof, and blood glucose monitoring device |
| CN109328032A (en) * | 2017-05-19 | 2019-02-12 | 深圳市得道健康管理有限公司 | Microneedle electrodes, channels and collaterals detection device and its method for customizing |
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Application publication date: 20141126 |