Stefan Knobelspies1,2, Benedikt Bierer1, Alvaro Ortiz Perez1, Jürgen Wöllenstein1,3, Janosch Kneer1, Stefan Palzer1
1Laboratory for Gas Sensors, Department of Microsystems Engineering, University of Freiburg, Germany
2Wearable Computing, Electronics Laboratory, Swiss Federal Institute of Technology Zurich, Switzerland
3Fraunhofer Institute for Physical Measurement Techniques IPM, Freiburg, Germany