Atmospheric air homogenous DBD plasma excited by bipolar nanosecond pulse used for improving the hydrophilic property of polypropyleneDezheng Yang, Wenchun Wang, Shuai Zhang, Zhijie Liu, Li Jia and Leyang DaiEPL, 102 6 (2013) 65001DOI: https://doi.org/10.1209/0295-5075/102/65001