1. Laboratory
for Air Pollution and Environmental Technology, Swiss Federal Laboratories for Materials Science and Technology (Empa), 8600 Dübendorf, Switzerland
2. Department
of Physics and Technology, UiT−The Arctic University of Norway, 9019 Tromsø, Norway
3. Institute
for Aerosol and Sensor Technology, Fachhochschule Nordwestschweiz (FHNW), 5210 Windisch, Switzerland
4. Camlin Technologies AG, 8005 Zürich, Switzerland
5. Faculty
of Biology and Medicine, Department of Physiology, Universite de Lausanne (UNIL), 1005 Lausanne, Switzerland