MESA+ University of Twente
The BIOS Lab-on-a-chip group

Introduction

Electrochemical sensors and sensor systems

This research area covers the development of knowledge and expertise of the electrode-liquid interface and its application in electrochemical micro-and nanodevices. The three basic detection principles are studied: potentiometry, amperometry and conductometry. Besides developing electrochemical sensors, the integration into lab-on-a-chip systems is implemented using cleanroom microfabrication. This opens up new operational principles such as redox cycling and the use of ultra-micro electrodes. In addition, integration of electrochemical cells in a Lab-on-a-chip enables the conversion of electro-active species.

Application of these electrochemical sensors and systems are in the field of health care, life sciences as well as in the field of environment and sustainability.

Research projects

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On-chip spermatozoa testing for artificial insemination

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Liquid Chromatography/on-chip-electrochemistry/mass-spectrometry in (bio) analytical chemistry, drug metabolism and proteomics

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Cotinine detection

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Lactate monitoring for intensive care and endurance sports

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Monitoring of the catalytic conversion process on single catalyst particles by impedance spectroscopy

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Spatial control of pH in a Lab-on-a-Chip

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pH sensing in microvolumes

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NO, O2 and pH sensing for vascular engineering

SEM photo of a parylene-covered anopore membrane after pyrolysis and activation, used for novel super capacitor electrodes.

Cyclic voltammograms at 50 mV/s for super capacitor characterization.

For more information contact:

Dr.ir. Wouter Olthuis

IMG_9201

 

 

E-mail:

w.olthuis@utwente.nl

 

 

Phone:

+31 (0)53 489 26 88

 

 

Room:

Carré 2.409