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Ultra-micro ring electrode and preparation method thereof

A micro-ring electrode and ring-electrode technology, applied in electrodes, electrolysis process, electrolysis components, etc., can solve the problems of difficulty in preparing ultra-micro-ring electrodes, degradation of insulation properties, etc., to achieve mass production, improve consistency, and be beneficial to comparative effect

Inactive Publication Date: 2006-06-21
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The disadvantages of these methods are: due to the use of epoxy resin in the thin glass tube to realize the insulation of the electrode material in the circumferential direction, it is difficult to prepare an ultra-micro ring electrode with a smaller overall size, and epoxy resin can be used in some environments and environments. There is a problem of degradation of insulation properties under certain conditions; and electrophoretic paint is not suitable for use under positive or negative potentials.

Method used

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  • Ultra-micro ring electrode and preparation method thereof

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Embodiment Construction

[0018] Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:

[0019] Such as figure 1 and figure 2 As shown, a kind of ultra-micro-ring electrode comprises a plastic stopper 16, a plastic sleeve 13 integrated with the plastic stopper 16, a copper wire 14 arranged in the plastic sleeve 13, and runs through the plastic stopper 16. Filamentous base 21 in the center. The circumference of the filiform base 21 is covered with an electrode film layer 22, and the electrode film layer 22 of the front end 11 is covered with an insulating film layer 23; Anastomosis; the front end 11 of the filamentary base 21 and the plastic stopper 16 are sealed by silicone resin 15 .

[0020] In the above technical scheme, the filamentary substrate 21 of this embodiment is a single-mode quartz bare optical fiber, and the rear end 12 of this section of optical fiber extending into the plastic sleeve 13 is only covered with an electrode f...

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Abstract

The invention discloses a super-microring electrode and preparing method, which comprises the following steps: first, taking the naked optical fiber as the filamentary insulation substrate of super-microring electrode; adapting RF magnetic sputtering technology to deposit a layer of metal film as electrode film on the optical fiber surface; second, adapting plasma reinforced chemical gas-phase deposition technology to deposit silica film as electrode insulation film on the metal film; then, corroding the silica film on one end of optical fiber through fluohydric acid to make the optical fiber covered by metal film only; adapting aluminum powder conductive glue to connect the optical fiber and copper lead; finally, assembling the copper lead of super-microring electrode in the plastic liner; adapting optical fiber knife pen to cut the super-microring electrode surface on the other end of optical fiber covered by metal film and silicon nitride film.

Description

technical field [0001] The invention relates to an electrochemical detection element, in particular to an ultramicro ring electrode and a preparation method thereof. Background technique [0002] At present, in the preparation process of ultramicroring electrodes, vacuum spraying, metal organic compound coating, gas pyrolysis and chemical plating are usually used to coat the required electrode film and insulating film on the filamentary insulating substrate. The existing method is to insert the filamentary substrate of the coated electrode material into a thin glass tube, insulate the electrode material in the circumferential direction with epoxy resin, and then process the electrode surface of the ring electrode [see L.S.Kuhn et al., Anal.Chem .1990,62,1631-1636]; or, using electrophoretic paint as the insulating material of the ultramicroring electrode [see Y.Lee et al., Anal.Chem.2002,74,3626-3633]. The disadvantages of these methods are: due to the use of epoxy resin in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30C25B11/00
Inventor 蒋庄德朱明智景蔚萱杨彪
Owner XI AN JIAOTONG UNIV
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