Affordable Access

Publisher Website

Glucose sensing in the low and negative region: utilization of a thin-film electrode

Authors
Journal
Journal of Electroanalytical Chemistry
0022-0728
Publisher
Elsevier
Publication Date
Volume
321
Issue
2
Identifiers
DOI: 10.1016/0022-0728(91)85597-i
Disciplines
  • Biology

Abstract

Abstract Miniature electrodes for an implantable, nonenzyme-based glucose sensor were constructed using thin-film technology. Dc magnetron-sputtered, thin films of platinum deposited on quartz, chromium-presputtered quartz, and titanium-presputtered quartz were evaluated as electrodes in a cyclic voltammetric set-up. Only the latter type of electrode retained its strong adherence to the quartz substrate throughout the testing period. This electrode was evaluated as the working electrode in cyclic voltammetry (CV) from −0.85 V to +0.85 V versus Ag/AgCI. Linear response was observed for a reduction peak near −0.779 V and an oxidation peak near −0.648 V versus a Ag/AgCI electrode at 37°C for glucose concentrations ranging from 50 to 300 mg/dl. There are inflection points of glucose voltammogram. Using these electrodes, the effects of variations of pH, [CO 2], [O 2], glucose concentration, and scan rate on the inflection points of glucose voltammograms were studied. These inflection points, however, seemed to be independent of some of the potential sources of variability.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

Glucose sensing in the low and negative region: Ut...

on Bioelectrochemistry and Bioene... Jan 01, 1991

Carbon thin films as electrode material in neural...

on Surface and Coatings Technolog...

Amorphous silicon thin-film negative electrode pre...

on Solid State Communications Jan 01, 2003

Characteristics of tin nitride thin-film negative...

on Journal of Power Sources Jan 01, 2001
More articles like this..