Manuscript received January 13, 2018; revised February 24, 2018; accepted March 20, 2018. Date of publication March 23, 2018; date of current version May 11, 2018. This work was supported in part by the National Natural Science Foundation of China under Grants 11664020 and 11264021; in part by the Project for Distinguished Young Scholars of Jiangxi Province under Grant 20171BCB23098; in part by the Natural Science Foundation of Jiangxi province under Grants 20161BAB201002 and 20151BAB207056; in part by the Engineering and Physical Sciences Research Council, U.K.; and in part by the ERC iPLASMM project under Grant 321268. The work of A. V. Zayats was supported by the Royal Society and the Wolfson Foundation. (Corresponding author: Jian Qiang Liu.) J. Q. Liu and Y. X. Zhou are with the School of Science and the Key Laboratory of Jiangxi Microstructure Functional Materials, Jiujiang University, Jiujiang 332005, China (e-mail:,jqliu2007@163.com; lx_ljq@jju.edu.cn).