Huang, Xianjun
Leng, Ting
Zhu, Mengjian
Zhang, Xiao
Chen, JiaCing
Chang, KuoHsin
Aqeeli, Mohammed
Geim, Andre K.
Novoselov, Kostya S.
Hu, Zhirun
Article History
Received: 7 July 2015
Accepted: 3 November 2015
First Online: 17 December 2015
Competing interests
: The authors declare no competing financial interests.