Funding for this research was provided by:
the National Natural Science Foundation of China (Grant No.41302223)
Chongqing Research Program of Basic Research and Frontier Technology (cstc2016jcyjA0074)
Scientific and Technological Research Program of Chongqing Municipal Education Commission (KJ1713327, KJ1600532)
Chongqing University of Science and Technology Graduate Student Science and Technology Innovation Program (YKJCX720601)
Article History
Received: 3 August 2018
Accepted: 11 December 2018
First Online: 18 December 2018