A facile route to obtain binary micro-nano roughness on composite coating surface Yefeng Feng, Zhichao Xu, Cheng Peng, Hongpu Huang and Jianbing Hu Eur. Phys. J. Appl. Phys., 82 2 (2018) 21302 Published online: 15 August 2018 DOI: 10.1051/epjap/2018170209