Tapered carbon microelectrode and process for production thereof

Details Tapered carbon microelectrode and process for production thereof Tapered carbon microelectrode and process for production thereof

1991-06-25

1993-06-15

Niebling, John

Metal working

Method of mechanical manufacture

Electrical device making

29825, 29854, 29885, 264 296, 264 295, 264 291, 204416, G01N 2726

Patent

active

052187578

ABSTRACT:
A tapered carbon microelectrode is produced by extruding an organic material or a composition composed of crystalline carbon fine powder and an organic binder into a thin rod form, carbonizing said rod by calcining to produce a pure carbon thin rod, soaking the resulting thin rod as an anode in an electrolytic solution, gradually pulling up the thin rod while electrochemically oxidizing the tip portion of the thin rod. Then a lead wire is connected with the thick portion of the thin rod followed by coating all the surface except the conically sharp tip portion.
The tapered carbon electrode can be used for various electrochemical measurements and scanning tunneling microscope.

REFERENCES:
patent: 4822538 (1989-04-01), Yoshida et al.
patent: 4950443 (1990-08-01), Kawakubo et al.
patent: 5004511 (1991-04-01), Tamura
patent: 5110516 (1992-05-01), Yoshida

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