Tapered carbon microelectrode and process for production thereof
US5218757A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jun 25, 1991 |
| Grant date | Jun 15, 1993 |
| Priority date | — |
| Expiry date | Jun 25, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49224
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.