Interfacial impedance sensor employing bio-activated microbeads and NiHCF-coated interdigitated microelectrodes: A model analysis

  • Nuno M.M. Pires
  • , Tao Dong
  • , Zhaochu Yang
  • , Lei Zhang

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

4 Scopus citations

Abstract

An impedance sensor based on NiHCF-coated interdigitated microelectrodes is presented as a promising solution for ultra-low level pathogen detection. The micro sensor employs micro-sized beads, which are coated with anti-pathogen specific antibodies, to achieve the high-sensitive detection through the amplified variations of the interfacial impedance. The effect of beads on the microelectrodes solution interface and subsequent impedance change were analyzed and demonstrated by fitting the experimental data to an equivalent electrical circuit model.

Original languageEnglish
Title of host publicationCommunication Systems and Information Technology - Selected Papers from the 2011 International Conference on Electric and Electronics, EEIC 2011
Pages921-928
Number of pages8
EditionVOL. 4
DOIs
StatePublished - 2011
Event2011 International Conference on Electric and Electronics, EEIC 2011 - Nanchang, China
Duration: 20 Jun 201122 Jun 2011

Publication series

NameLecture Notes in Electrical Engineering
NumberVOL. 4
Volume100 LNEE
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119

Conference

Conference2011 International Conference on Electric and Electronics, EEIC 2011
Country/TerritoryChina
CityNanchang
Period20/06/1122/06/11

Keywords

  • bio-activated microbeads
  • equivalent electrical circuit model
  • high-sensitivity pathogen detection
  • interdigitated microelectrodes
  • interfacial impedance sensor
  • NiHCF film

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