Electrochemical sensor

US5670031A · kind A · utility

Assignee

• Fraunhofer-Gesellschaft der angewandten Forschung e.V. · DE

Inventors

• Rainer Hintsche · Berlin, DE
• Manfred Paeschke · Wandlitz, DE
• Uwe Schnakenberg · Berlin, DE
• Ulla Wollenberger · Berlin, DE

Key dates

• Filing date: Nov 22, 1995
• Grant date: Sep 23, 1997
• Expiry date: Nov 22, 2015

Classification

• Technology area (CPC G): Physics
• CPC primary: G01P5/20
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to an electrochemical sensor with interdigital micro-electrodes (1) with structure widths in the sub-.mu.m range. With a twin or multi-pair array of the interdigital micro-electrodes on a substrate (8), the electrochemical detection of molecules with high sensitivity is made possible and further uses for the detection of chemical reaction cycles are made available. The electrodes may be arranged in a micro-channel applied to the substrate having a constant small volume of a few nanoliters. The electrochemical sensor of the invention is suitable for the multiple measurement of the same species of molecule or as a multi-sensitive sensor in chemical analysis and process control in various fields such as biotechnology, environmental protection or health.