Fabrication of a metal-cored multi-barrelled microiontophoresis assembly

A method is described for fabrication of 7-barrelled microiontophoresis electrodes with a center barrel of platinum-coated tungsten. The electrodes require a minimum of expensive apparatus and can be fabricated in an hour or two. The electrodes have low recording impedance (typically 100 k omega and...

Full description

Saved in:
Bibliographic Details
Published inJournal of neuroscience methods Vol. 32; no. 1; p. 55
Main Authors Hellier, M, Boers, P, Lambert, G A
Format Journal Article
LanguageEnglish
Published Netherlands 01.04.1990
Subjects
Glass
Iontophoresis - instrumentation
Microelectrodes
Online AccessGet more information

Cover

More Information
Summary:A method is described for fabrication of 7-barrelled microiontophoresis electrodes with a center barrel of platinum-coated tungsten. The electrodes require a minimum of expensive apparatus and can be fabricated in an hour or two. The electrodes have low recording impedance (typically 100 k omega and low resistance iontophoresis barrels (typically 20-50 M omega). Compared to electrodes with a micropipette recording barrel, these electrodes are practically noise-free and can pass ionotophoretic currents of up to 200 nA without an appreciable increase in recording noise.
ISSN:0165-0270
DOI:10.1016/0165-0270(90)90071-M