Guo, Jian
Guo, Shuxiang
Shao, Lin
Wang, Peng
Gao, Qiang
Funding for this research was provided by:
National High Technology Research Development Plan (863 Plan) (2015AA040102)
General Research Program of the Natural Science Foundation of Tianjin (13JCYBJC38600)
the Project-sponsored by SRF for ROCS, SEM (2014020)