Interdigitated array electrodes with magnetic function as a particle-based biosensor

Zhengchun Peng, Peter J. Hesketh, Xiaoling Yang, Guigen Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

A particle-based electrochemical biosensor was developed by integrating soft magnetic material, NiFe, with interdigitated array (IDA) electrodes. The NiFe strips were embedded beneath the IDA electrodes and acted as magnetic traps to collect the enzyme labeled paramagnetic particles from a microchannel flow of particle suspension. The IDA electrodes, which overlap on top of the NiFe strips, are designed to detect in close proximity the enzyme product that is produced from the particle surface. The sensors were fabricated in such a way that the particles were positioned among IDA electrodes without blocking the active electrode surface. The theoretical prediction of the sensor response is presented. It is expected that both sensitivity and limit of detection of the biosensor would be improved significantly.

Original languageEnglish
Title of host publicationThe 6th IEEE Conference on SENSORS, IEEE SENSORS 2007
Pages1097-1100
Number of pages4
DOIs
StatePublished - 2007
Event6th IEEE Conference on SENSORS, IEEE SENSORS 2007 - Atlanta, GA, United States
Duration: Oct 28 2007Oct 31 2007

Publication series

NameProceedings of IEEE Sensors

Conference

Conference6th IEEE Conference on SENSORS, IEEE SENSORS 2007
Country/TerritoryUnited States
CityAtlanta, GA
Period10/28/0710/31/07

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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