[1] [1] KNEIPP J, KNEIPP H, KNEIPP K. SERS-a single-molecule and nanoscale tool for bioanalytics ［J］. Chemical Society Reviews, 2008, 37 (5):1052-1060.

[2] [2] KIRALY B, YANG S, HUANG T J. Multifunctional porous silicon nanopillar arrays: antireflection, superhydrophobicity, photoluminescence, and surface-enhanced Raman scattering［J］. Nanotechnology, 2013, 24(24):245704.

[3] [3] STILES P L, DIERINGER J A, SHAH N C, et al. Surface-enhanced Raman spectroscopy［J］. Annual Review of Analytical Chemistry, 2008, 1(7):601-626.

[4] [4] ZHANG C, LI C, YU J, et al. SERS activated platform with three-dimensional hot spots and tunable nanometer gap［J］. Sensors and Actuators, 2018, B258:163-171.

[5] [5] ZHANG C, LI Z, JIANG S Z, et al. U-bent fiber optic SPR sensor based on graphene/AgNPs［J］. Sensors & Actuators, 2017, B251:127-133.

[6] [6] ESTEBAN R, BORISOV A G, NORDLANDER P, et al. Bridging quantum and classical plasmonics with a quantum-corrected model［J］. Nature Communications, 2012, 3(5):825.

[7] [7] BANIK M, APKARIAN V A, PARK T H, et al. Raman staircase in charge transfer SERS at the junction of fusing nanospheres［J］. The Journal of Physical Chemistry Letters, 2013, 4(1):88-92.

[8] [8] PERSSON B N, ZHAO K, ZHANG Z . Chemical contribution to surface-enhanced Raman scattering［J］. Physical Review Letters, 2006, 96(20): 207401.

[9] [9] CHEN J, MARTENSSON T, DICK K A, et al. Surface-enhanced Raman scattering of rhodamine 6G on nanowire arrays decorated with gold nanoparticles.［J］. Nanotechnology, 2008, 19(27):275712.

[10] [10] JIN L, SHE G, WANG X, et al. Enhancing the SERS performance of semiconductor nanostructures through a facile surface engineering strategy［J］. Applied Surface Science, 2014, 320:591-595.

[11] [11] KHORASANINEJAD M, RAEISZADEH S M, JAFARLOU S, et al. Highly enhanced raman scattering of graphene using plasmonic nano-structure［J］. Scientific Reports, 2013, 3:2936.

[12] [12] XU W, LING X, XIAO J, et al. Surface enhanced Raman spectroscopy on a flat graphene surface［J］. Proceedings of the National Academy of Sciences, 2012, 109(24):9281-9286.

[13] [13] CRAMPTON K T, ZEYTUNYAN A, FAST A S, et al. Ultrafast coherent raman scattering at plasmonic nanojunctions［J］. Journal of Physical Chemistry, 2016, C120(37):20943-20953.

[14] [14] GAO C B, HU Y X, WANG M S, et al. Fully alloyed Ag/Au nanospheres: combining the plasmonic property of Ag with the stability of Au［J］. Journal of the American Chemical Society, 2014, 136(20):7474-7479.

[15] [15] LI C, YANG C, XU S, et al. Ag2O@Ag core-shell structure on PMMA as low-cost and ultra-sensitive flexible surface-enhanced Raman scattering substrate［J］. Journal of Alloys & Compounds, 2017, 695:1677-1684.

[16] [16] IONESCU R E, AYBEKE E N, BOURILLOT E, et al. Fabrication of annealed gold nanostructures on pre-treated glow-discharge cleaned glasses and their used for LSPR and SERS detection of adsorbed (bio)molecules［J］. Sensors, 2017, 17(2):E236.

[17] [17] ZHANG F, BRAUN G B, SHI Y, et al. Fabrication of Ag@SiO2@Y2O3∶Er nanostructures for bioimaging: tuning of the upconversion fluorescence with silver nanoparticles ［J］. Journal of the American Chemical Society, 2010, 132 (9):2850-2851.

[18] [18] ZHANG W, MAN P, WANG M, et al. Roles of graphene nanogap for the AgNFs electrodeposition on the woven Cu net as flexible substrate and its application in SERS［J］. Carbon, 2018, 133:300-305.

[19] [19] YANG C, ZHANG C, HUO Y, et al. Shell-isolated graphene@Cu nanoparticles on graphene@Cu substrates for the application in SERS［J］. Carbon, 2016, 98:526-533.