Liu, Zheng
Amani, Matin
Najmaei, Sina
Xu, Quan
Zou, Xiaolong
Zhou, Wu
Yu, Ting
Qiu, Caiyu
Birdwell, A. Glen
Crowne, Frank J.
Vajtai, Robert
Yakobson, Boris I.
Xia, Zhenhai
Dubey, Madan
Ajayan, Pulickel M.
Lou, Jun
Article History
Received: 21 March 2014
Accepted: 11 September 2014
First Online: 18 November 2014
Competing interests
: The authors declare no competing financial interests.