Wu, Chaoxing http://orcid.org/0000-0002-1231-2699
Kim, Tae Whan
Choi, Hwan Young
Strukov, Dmitri B.
Yang, J. Joshua http://orcid.org/0000-0003-0671-6010
Article History
Received: 10 August 2016
Accepted: 30 July 2017
First Online: 29 September 2017
Competing interests
: The authors declare no competing financial interests.