Epoxy-encapsulated ceramic superconductor microelectrodes

Rebecca O. Gollmar, John McDevitt, Royce W. Murray, James P. Collman, Gordon T. Yee, William A. Little

Research output: Contribution to journalArticle

Abstract

A procedure is outlined for fabricating well-behaved microelectrodes from ceramic pellets of YBa2Cu3O7 and Bi2Sr2CaCu2O8 which involves systematic polishing of an epoxy-encapsulated superconductor chip, under Et4NClO4/acetonitrile solution, to a potentiometric end point. Voltammetry of the resulting microelectrodes in acetonitrile is illustrated and compared to that arising from alternative superconductor electrode geometries. The microelectrodes have active electrode surface areas ranging from 2 × 10-6 to 3 × 10-4 cm2, as characterized electrochemically and microscopically. The results are significant steps toward developing the methodology necessary to study the electrochemical response of high temperature superconductor phases at temperatures below their superconductor critical temperature.

Original languageEnglish (US)
Pages (from-to)3696-3701
Number of pages6
JournalJournal of the Electrochemical Society
Volume136
Issue number12
StatePublished - Dec 1989

Fingerprint

Ceramic superconductors
Microelectrodes
Superconducting materials
ceramics
Acetonitrile
acetonitrile
Electrodes
electrodes
High temperature superconductors
Voltammetry
Polishing
polishing
pellets
high temperature superconductors
critical temperature
chips
methodology
Temperature
Geometry
geometry

ASJC Scopus subject areas

  • Electrochemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Gollmar, R. O., McDevitt, J., Murray, R. W., Collman, J. P., Yee, G. T., & Little, W. A. (1989). Epoxy-encapsulated ceramic superconductor microelectrodes. Journal of the Electrochemical Society, 136(12), 3696-3701.

Epoxy-encapsulated ceramic superconductor microelectrodes. / Gollmar, Rebecca O.; McDevitt, John; Murray, Royce W.; Collman, James P.; Yee, Gordon T.; Little, William A.

In: Journal of the Electrochemical Society, Vol. 136, No. 12, 12.1989, p. 3696-3701.

Research output: Contribution to journalArticle

Gollmar, RO, McDevitt, J, Murray, RW, Collman, JP, Yee, GT & Little, WA 1989, 'Epoxy-encapsulated ceramic superconductor microelectrodes', Journal of the Electrochemical Society, vol. 136, no. 12, pp. 3696-3701.
Gollmar RO, McDevitt J, Murray RW, Collman JP, Yee GT, Little WA. Epoxy-encapsulated ceramic superconductor microelectrodes. Journal of the Electrochemical Society. 1989 Dec;136(12):3696-3701.
Gollmar, Rebecca O. ; McDevitt, John ; Murray, Royce W. ; Collman, James P. ; Yee, Gordon T. ; Little, William A. / Epoxy-encapsulated ceramic superconductor microelectrodes. In: Journal of the Electrochemical Society. 1989 ; Vol. 136, No. 12. pp. 3696-3701.
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