Scanning electrochemical microscopy. 32. Gallium ultramicroelectrodes and their application in ion-selective probes

Chang Wei, Allen J. Bard, Imre Kapui, Géza Nagy, Klára Tóth

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Gallium ultramicroelectrodes for amperometric measurements in scanning electrochemical microscopy were fabricated by introduction of liquid Ga into drawn glass micropipets. Cyclic voltammetry of Ru(NH3)63+ and the use of this species for SECM imaging is described. Double-barrel micropipet tips with a Ga amperometric electrode and an ion-selective (K+) potentiometric probe can also be constructed. This probe was used to image the K+ activity near a 20-μm-diameter lumen of a glass capillary.

Original languageEnglish
Pages (from-to)2651-2655
Number of pages5
JournalAnalytical Chemistry
Volume68
Issue number15
DOIs
Publication statusPublished - Aug 1 1996

    Fingerprint

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this