Electrochemistry in nanovials fabricated by combining screen printing and laser micromachining

被引：49

作者：

Ball, JC ^{[1
]}

Scott, DL ^{[1
]}

Lumpp, JK ^{[1
]}

Daunert, S ^{[1
]}

Wang, J ^{[1
]}

Bachas, LG ^{[1
]}

机构：

[1] Univ Kentucky, Dept Chem, Lexington, KY 40506 USA

来源：

ANALYTICAL CHEMISTRY | 2000年 / 72卷 / 03期

关键词：

D O I：

10.1021/ac991163c

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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 x 10(4) mu m(2). The ultrasmall-volume cells represent a simple, reliable, low-cost approach for the fabrication of complete electrochemical nanovials.

引用

页码：497 / 501

页数：5

共 34 条

[1] Direct structural observation of liquid molecules in single picoliter microdroplets using near-infrared Raman microprobe spectroscopy combined with laser trapping and chemical-tomographic imaging techniques [J].