[1] [1] Wei H, Xu H X. Nanoscale, 2013, 5: 10794.

[2] [2] Yuan Y F, Panwar N, Kit Yap S H, et al. Coordiantion Chem. Rev., 2017, 337: 1.

[3] [3] Katherine A W, Richard P V. Annu. Rev. Phys. Chem., 2007, 58: 267.

[4] [4] Kim S, Jin J H, Kim Y J, et al. Nature, 2008, 453: 757.

[5] [5] Martti K, Anatoly V Z. Nat. Photo., 2012, 6: 737.

[6] [6] Shangjr G, Wang C Y, Chen H Y, et al. ACS Photo., 2016, 3: 1371.

[7] [7] Hao F, Colleen L N, Jason H H, et al. Nano Lett., 2007, 7: 729.

[8] [8] Srikanth P, Li A R, Michel B, et al. J. Phys. Chem. C, 2013, 117: 16640.

[9] [9] Anirban D, Tae K L, Zhang Y M, et al. ACS App. Mat. Interfaces, 2015, 7: 14793.

[10] [10] Chou S Y, Yu C C, Yen Y T, et al. Anal. Chem., 2015, 87: 6017.

[11] [11] Taehee K, Jiyeah R, Joohyun P, et al. Appl. Phys. Express, 2015, 8: 092003.

[12] [12] Huang y, Zhang X, Emilie R, et al. Scientific Reports, 2016, 6: 23159.

[13] [13] Chen S, Meng L Y, Shan H Y, et al. ACS Nano, 2016, 10: 581.

[14] [14] Huang Y, Ma L W, Li J H, et al. Nanotec., 2017, 28: 105203.

[15] [15] Li A R, Sachin K S, Ibrahim A, et al. Nanoscale, 2016, 8: 15658.

[16] [16] Syed M, Zhang S P, Kim N, et al. Nano Lett., 2012, 12: 2088.

[17] [17] Li M J, Fang H, Li X M, et al. J. Euro. Opt. Soc., 2017, 13: 23.

[18] [18] Schmidt F P, Ditlbacher H, Hohenester U, et al. Nano Lett., 2012, 12: 5780.

[19] [19] Krug M K, Reisecker M, Hohenau A, et al. Appl. Phys. Lett., 2014, 105: 171103.

[20] [20] Johnson P B, Christy R W. Phys. Rev. B, 1972, 6: 4370.