Electrochemistry in nanovials fabricated by combining screen printing and laser micromachining

J. Christopher Ball, Donna L. Scott, Janet K. Lumpp, Sylvia Daunert, Joseph Wang, Leonidas G. Bachas

Research output: Contribution to journalArticle

49 Scopus citations

Abstract

The coupling of screen-printing and laser micromachining technology has been used to create a nanovial with "built-in" working and reference electrodes. The volume of the nanovial was calculated to be 7.2 nL using dimensions determined by SEM. The electrochemical nanovial was characterized using the ferri/ferrocyanide redox couple. Cyclic voltammetry and chronoamperometry experiments were performed with electrochemical nanovials utilizing 5% (v/v) glycerin in the solutions and a humidified headspace to control evaporation of the small-volume samples. Chronoamperometry experiments gave results consistent with a diffusion-limited process and revealed a working electrode surface area of 2.6 × 104 μm2. The ultrasmall-volume cells represent a simple, reliable, low-cost approach for the fabrication of complete electrochemical nanovials.

Original languageEnglish (US)
Pages (from-to)497-501
Number of pages5
JournalAnalytical Chemistry
Volume72
Issue number3
DOIs
StatePublished - Feb 1 2000
Externally publishedYes

ASJC Scopus subject areas

  • Analytical Chemistry

Fingerprint Dive into the research topics of 'Electrochemistry in nanovials fabricated by combining screen printing and laser micromachining'. Together they form a unique fingerprint.

  • Cite this