[1] Swiss Federal Laboratories for Materials Testing and Research (EMPA), Lerchenfeldstr. 5, CH-9014 St. Gallen, Switzerland
[2] Solothurn University of Applied Sciences Northwestern Switzerland (FHSO), Olten, Switzerland
[3] Swiss Federal Laboratories for Materials Testing and Research (EMPA), Lerchenfeldstr. 5, CH-9014 St. Gallen, Switzerland