Multi-tip nano-prisms: Controlled growth and emission enhancement properties Ming Liu, Cong Meng, Zheng-Hong Xue, Xiang Xiong, Da-Jun Shu, Ru-Wen Peng, Qiang Wu, Zheng Hu and Mu Wang EPL, 104 1 (2013) 18004 Published online: 15 November 2013 DOI: 10.1209/0295-5075/104/18004