Ruan, Ning
Gao, David Yang http://orcid.org/0000-0002-2245-8050
Funding for this research was provided by:
Air Force Office of Scientific Research (FA2386-16-1-4082 and FA9550-17-1-0151.)
Article History
Received: 25 January 2018
Accepted: 25 September 2018
First Online: 15 October 2018
Competing interests
: The authors declare that they have no competing interests.