Xu, Shuozhi https://orcid.org/0000-0003-0121-9445
Chen, Xiang https://orcid.org/0000-0002-1218-7912
Funding for this research was provided by:
National Science Foundation (DMR-1121053)
Office of Science (DE-SC0006539)
Peer Review Statement: The publishing and review policy for this title is described in its Aims & Scope.
Publication History
Received: 2018-01-30
Accepted: 2018-06-04
Published: 2018-06-25