(Ba,Sr)TiO3 -based Electrolyte Conductivity Sensors: a Comparative Study

Electronics

  • V. V. Buniatyan State Engineering University of Armenia (Polytechnic)
  • C. A. Huck FH Aachen | University of Applied Sciences, Institute of Nano- and Biotechnologies, Campus Jülich
  • А. S. Poghossian FH Aachen | University of Applied Sciences, Institute of Nano- and Biotechnologies, Campus Jülich
  • M. J. Schöning FH Aachen | University of Applied Sciences, Institute of Nano- and Biotechnologies, Campus Jülich
  • T. N. Petrosyan State Engineering University of Armenia (Polytechnic)
Keywords: contactless, electrolyte conductivity, perovskite-oxide film, interdigitated electrode.

Abstract

A contactless electrolyte conductivity sensor based on (Ba,Sr)TiO3 films and Pt interdigitated electrodes is fabricated and examined. Two types of sensor designs with buried(into insulating SiO2layer) and non-buried interdigitated electrodes were investigated and compared. The sensors were characterized by means of impedance-spectroscopy measurements indifferent commercially available electrolyte-conductivity standard solutions ranging from 0.084 to 50 mS/cm and over the frequency range from 1 Hz to 3 MHz. It is shown that the parameters of sensors with the Pt electrodes buried in SiO2 layer are favourable

Author Biographies

V. V. Buniatyan, State Engineering University of Armenia (Polytechnic)

Buniatyan Vahe Vazgen

Dr. of tech. sci., Professor, Head of the Chair MBMD

C. A. Huck, FH Aachen | University of Applied Sciences, Institute of Nano- and Biotechnologies, Campus Jülich

Huck Christina

А. S. Poghossian, FH Aachen | University of Applied Sciences, Institute of Nano- and Biotechnologies, Campus Jülich

Poghossian Arshak Stepan

Dr. of tech. sci., Professor

M. J. Schöning, FH Aachen | University of Applied Sciences, Institute of Nano- and Biotechnologies, Campus Jülich

Schoening Michael

Dr. of tech. sci., Professor

T. N. Petrosyan, State Engineering University of Armenia (Polytechnic)

Petrosyan Tigran Norik

Graduate student

Published
2014-06-16
Issue
Vol 17 No 2 (2014): Vol 17 No 2 (2014)
Section
Articles