Surface modification of PET polymers by using atmospheric-pressure air brush-shape plasma for biomedical applicationsWeiyuan Ni, Dongping Liu, Ying Song, Longfei Ji, Qi Zhang and Jinhai NiuEur. Phys. J. Appl. Phys., 61 1 (2013) 10801DOI: https://doi.org/10.1051/epjap/2012120275