Hydrogen sensors based on Pt-loaded WO3 sensing layers R. Jolly Bose, Navas Illyaskutty, K. S. Tan, R. S. Rawat, Murukeshan Vadakke Matham, Heinz Kohler and V. P. Mahadevan Pillai EPL, 114 6 (2016) 66002 Published online: 26 July 2016 DOI: 10.1209/0295-5075/114/66002