[1] M Martin. Surface-enhanced spectroscopy［J］. Rev Mod Phys, 1985, 57(3): 783-826.

[2] A Campion, P Kambhampati. Surface-enhanced Raman scattering［J］. Chem Soc Rev, 1998, 27(7): 241-250.

[3] C L Haynes, A D McFarland, R P Van Duyne. Surface-enhanced Raman spectroscopy［J］. Analytical Chemistry, 2005, 77(17): 339-346.

[4] K Keipp, Y Wang, H Kneipp, et al.. Single molecule detection using surface-enhanced Raman scattering (SERS)［J］. Phys Rev Lett, 1997, 78(9): 1667-1670.

[5] Z Li, Y Xia. Metal nanoparticles with gain toward single-molecule detection by surface-enhanced Raman scattering［J］. Nano Lett, 2010, 10(1): 243-249.

[6] P Muhlschlegel, H J Eiler, O J F Martin, et al.. Resonant optical antennas［J］. Science, 2005, 308(10): 1607-1609.

[7] A Sundaramurthy, K B Crozier, G S Kino. Field enhancement and gap-dependent resonance in a system of two opposing tip-to-tip Au nanotriangles［J］. Phys Rev B, 2005, 72(16): 165409.

[8] J Britt Lassiter, Javier Aizpurua, Luis I Hernandez, et al.. Close encounters between two nanoshells［J］. Nano Lett, 2008, 8(4): 1212-1218.

[9] H Xu, E J Bjerneld, M Kll, et al.. Spectroscopy of single hemoglobin molecules by surface enhanced Raman scattering［J］. Phys Rev Lett, 1999, 83(21): 4357-4360.

[10] B Pettinger, B Ren, G Picardi, et al.. Nanoscale probing of adsorbed species by tip-enhanced Raman spectroscopy［J］. Phys Rev Lett, 2004, 92(9): 096101.

[11] E G Bortchagovsk, S Lein, U C Fischer. Surface plasmon mediated tip enhanced Raman scattering［J］. Appl Phys Lett, 2009, 94(6): 063188.

[12] E G Bortchagovsky, U C Fischer. A retrahedral tip as a probe for tip-enhanced Raman scattering and as a near-field Raman probe［J］. J Raman Spectroscopy, 2009, 40(10): 1386-1391.

[13] N A Hatab, C Hsueh, A L Gaddis, et al.. Free-standing optical gold bowtie nanoantenna with variable gap size for enhanced Raman spectroscopy［J］. Nano Lett, 2010, 10(12): 49524955.

[14] Feng Yaping, Zhou Jun, Yang Mingyang, et al. Fabrication and optical properties of two-dimensional thue-morse quasicrystals［J］. Acta Optica Sinica, 2011, 31(4): 0423001.

[15] Lu Dunwu, Huang Huijie, Yan Yu, et al.. Deep submicron excimer laser lithography［J］. Acta Optica Sinica, 1996, 16(8): 1169-1172.

[16] Mei Longhua, Zhou Jinyun, Lei Liang, et al.. Measurement and evaluation for the optical system in laser large-area scanning projection imaging lithography[J]. Laser & Optoelectronics Progress, 2012, 49(7): 072201.

[17] D J Bergman, M I Stockman. Surface plasmon amplification by stimulated emission radiation: quantum generation of coherent surface plasmons in nanosysytems［J］. Phys Rev Lett, 2003, 90(2): 027402.

[18] H Zhang, J Zhou, W Zou, et al.. Surface plasmon amplification characteristics of an active three-layer nanoshell-based spaser［J］. J Appl Phys, 2012, 112(7): 074309.

[19] A L Koh, K Bao, I Khan, et al.. Single silver nanoparticles and dimers: influence of beam damage and mapping of dark modes［J］. ACS Nano, 2009, 3(10): 3015-3022.

[20] Y Fang, Z Li, Y Huang, et al.. Branched silver nanowires as controllable plasmon routers［J］. Nano Lett, 2010, 10(5): 1950-1954.

[21] S Liu, J Li, F Zhou, et al.. Efficient surface plasmon amplification from gain-assisted gold nanorods［J］. Opt Lett, 2011, 36(7): 1296-1298.

[22] P B Johnson, R W Christy. Optical constants of the noble metals［J］. Phys Rev B, 1972, 6(12): 4370-4379.

[23] M W Knight, N J Halas. Nanoshells to nanoeggs to nanocups: optical properties of reduced symmetry core-shell nanoparticles beyond the quasistatic limit［J］. New J Phys, 2008, 10(10): 105006.

[24] J A Stratton. Electromagnetic Theory［M］. New York: McGraw-Hill, 1941.

[25] C E Talley, J B Jackson, C Oubre, et al.. Surface-enhanced Raman scattering from individual Au nanoparticles and nanoparticles dimer substrates［J］. Nano Lett, 2005, 5(8): 1569-1574.

[26] S Grésillon, L Aigouy, A C Boccara, et al.. Experimental observation of localized optical excitation in radom metal-dielectric films［J］. Phys Rev Lett, 1999, 82(22): 4520-4523.