Different wavelength ranges' WGM lasing from a ZnO microrod/R6G:PMMA microcavityGangyi Zhu, Jitao Li, Panlin Li, Zhengshan Tian, Jun Dai, Yueyue Wang, Zengliang Shi and Chunxiang XuEPL, 110 6 (2015) 67007DOI: https://doi.org/10.1209/0295-5075/110/67007