MtPh

Dynamic sensor operation to improve sensitivity, selectivity and stability

date
18.05.2018 
time
01:00 PM - 02:00 PM 
speaker
Prof. Dr. Andreas Schütze 
affiliation
Universität des Saarlandes 
language
en 
main topic
Materials: Superconductors, Magnetic Materials, Nano Structures
subtopics
Physics: Condensed Matter (incl. Soft, Solid)
host
Kristina Krummer 
abstract

Dynamic operation of sensors is well known for various physical sensor devices, i.e. yaw rate and flow sensors based on the Coriolis effect or magnetic sensors using active offset compensation. Furthermore, it can facilitate sensor self-monitoring and is therefore a generic approach for improving existing sensor and deriving novel sensor solutions. The talk will highlight various dynamic operation approaches for chemical sensing in the liquid and gas phase. To emphasize the enormous potential, the talk will focus on temperature cycled operation of metal oxide gas sensors to achieve unprecedented sensitivity and selectivity. A simple, yet highly effective physical model of MOS sensor will be introduced allowing facile optimization of the operating mode as well as sensor data evaluation. The approach was primarily developed for Indoor Air Quality monitoring, but could also pave the way for novel solutions in odor perception and medical diagnosis. Finally, a novel integrated sensor system with selective preconcentration is presented that extends the dynamic operation concept further to achieve even higher sensitivity and selectivity.

 

Last update: 18.05.2018 07:37.

venue 

Leibniz Institut für Festkörper- und Werkstoffforschung Dresden (D2E.27, Leibniz IFW Dresden) 
Helmholtzstraße 20
01069 Dresden
homepage
http://www.ifw-dresden.de 

organizer 

Leibniz Institut für Festkörper- und Werkstoffforschung Dresden (IFW)
Helmholtzstraße 20
01069 Dresden
homepage
http://www.ifw-dresden.de 
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