[1] D Lim, K Jeon, M Kim H et al. Nature Materials, 9, 60(2010).
[2] J Mcquillan A, J Hendra P, M Fleischmann. Chemical Physics Letters, 26, 163(1974).
[3] R P Van Duyne, L Jeanmaire D. J. Electroanal. Chem. Interfacial Electrochem, 84, 1(1977).
[4] J Jahn I, K Weber, S Zheng X et al. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 197, 56(2018).
[5] T Hughes, H Ilkhani, J Zhong C et al. Biosensors and Bioelectronics, 80, 257(2016).
[6] T Ertsgaard C, S Rich I, M Mckoskey R et al. ACS Nano, 8, 10941(2014).
[7] D Graham, L Guerrini. Chemical Society Reviews, 41, 7085(2012).
[8] C Shi G, L Wang M, Y Zhu Y et al. Beilstein Journal of Nanotechnology, 10, 578(2019).
[9] J Zhong, H Guo G, M Muhammad et al. Talanta, 207, 120324(2020).
[10] L Zhang Y, Y Zhang W, B Xu B et al. Advanced Optical Materials, 1, 56(2013).
[11] J Cao, H Mao Q. ChemistrySelect, 1, 1784(2016).
[12] F Geng Y, W Xu Y, N Wang L et al. Journal of Physics D: Applied Physics, 51, 285104(2018).
[13] G Smitha K, L Smitha S, R Ravindran T et al. Nanotechnology, 22, 265705(2011).
[14] A Foti, F Bonaccorso, D Andrea C et al. Plasmonics, 8, 13(2013).
[15] M Parsons, R Ekman D, W Colletter T et al. Analyst, 134, 478(2009).
[16] V H Pham, B Pham T, T H C Hoang et al. Scientific Reports, 9, 238(2019).