Comparison of the performances of conductometric microsensors for different technologies and designs of interdigitated electrodes

Basma Khadro, Hunor Santha, Peter Nagy, Gabor Harsanyi, Nicole Jaffrezic-Renault

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

In this paper, two technologies (Photolithographic and Laser) and three designs of interdigitated electrodes (Simple IDT, Assymetric Branching IDT and Branching IDT) were compared for simple conductivity measurements of saline solutions (NaCl) and for enzymatic detection of protein (Bovine Serum Albumin). The results of both tests, showed that the Assymetric Branching IDT is the most sensitive in comparison to other electrodes, its sensitivity is 1.5 higher than that of simple IDT for conductivity measurements and 2.2 higher for protein detection. Moreover, the "laser" electrodes present a remarkable reproducibility in comparison to the "photolithographic" electrodes.

Original languageEnglish
Pages (from-to)413-416
Number of pages4
JournalSensor Letters
Volume6
Issue number3
DOIs
Publication statusPublished - Jun 1 2008

Keywords

  • Conductometric biosensors
  • Conductometric measurements
  • Interdigitated electrodes
  • Laser technology
  • Photolithographic technology

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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