Liu, Xiaolong
Zhang, Zhuhua
Wang, Luqing
Yakobson, Boris I.
Hersam, Mark C. http://orcid.org/0000-0003-4120-1426
Article History
Received: 10 September 2017
Accepted: 15 June 2018
First Online: 16 July 2018
Competing interests
: The authors declare no competing interests.