Welcome to the website of the Institute of Experimental Condensed Matter Physics department Materials Science!
The department of Materials Science (Prof. Dr. K. Schierbaum) at the Institute of Experimental Condensed Matter Physics conducts research on physical fundamentals of chemical sensor materials, new concepts on sensor structures and functionalized surfaces. The focus lies on model systems and application-oriented layer structures based on titanium and tungsten oxides.
One result of our studies is a novel fabrication technique for low- to ultra-low-power consumption MOX gas sensors developed at our department. We use a special electrochemical technique, called plasma electrolytic oxidation, to form porous titanium oxide layers with a reproducible microstructure on titanium substrates. By applying a printing method for the on-top catalytically active electrode, MOX gas sensors are obtained which exhibit a high stability. Our design enables the application of a variety of different detection principles such as amperometry, voltammetry, impedance spectroscopy, and calorimetry. Smart digital H2 sensors for LEL detection, low-ppm carbon monoxide sensors and fast humidity sensors represent the first demonstration of this technology.
Prof. Dr. Klaus Schierbaum has been actively involved in large national projects dealing with sensor development (BMBF project no. 13AS00138, 13AS01426, 13N5798) and EC funded projects. He was coordinator of the NanoChemSens project (STRP 505895-1) and recently project leader of the VIP project “innoSens” (BMBF project no. VIP 03V0356).
Expertise: Surface Science and scanning tunneling microscopy studies on chemical sensor materials with the aim to correlate the atomic surface structure of metal oxides with their sensing properties as determined by conductivity and work function measurements; ultrathin ordered metal oxides such as CeOx/Pt and TiOx/Pt; tin oxide based sensors; QMB sensors; sensor tests; LabVIEW based sensor control software.