Comparative study on different plasma-induced electron emission properties of ZnO nanorod and carbon nanotube arraysQingliang Liao, Ya Yang, Junjie Qi, Yunhua Huang, Yue Zhang, Liansheng Xia and Liang LiuEPL, 90 1 (2010) 16006DOI: https://doi.org/10.1209/0295-5075/90/16006