Zhang, Lei
Lei, Dongsheng
Smith, Jessica M.
Zhang, Meng
Tong, Huimin
Zhang, Xing
Lu, Zhuoyang
Liu, Jiankang
Alivisatos, A. Paul
Ren, Gang
Article History
Received: 31 July 2015
Accepted: 19 February 2016
First Online: 30 March 2016
Competing interests
: The authors declare no competing financial interests.