The plasma footprint of an atmospheric pressure plasma jet on a flat polymer substrate and its relation to surface treatmentIuliia Onyshchenko, Anton Yu. Nikiforov, Nathalie De Geyter and Rino MorentEur. Phys. J. Appl. Phys., 75 2 (2016) 24712DOI: https://doi.org/10.1051/epjap/2016150564