J Raman Spectrosc 2011, 42:12–20.CrossRef 31. Chung AJ, Huh YS, Erickson D: Large area flexible SERS active substrates using engineered Everolimus mw nanostructures. Nanoscale 2011, 3:2903–2908.CrossRef 32. Dickey MD, Weiss EA, Smythe EJ, Chiechi RC, Capasso F, Whitesides GM: Fabrication of arrays of metal and metal oxide nanotubes by shadow evaporation. ACS Nano 2008, 2:800–808.CrossRef 33. Giallongo G, Durante C, Pilot R, Garoli D, Bozio R, Romanato F, Gennaro A, Rizzi GA, Granozzi G: Growth and optical properties of silver nanostructures obtained on connected anodic aluminum oxide templates. Nanotechnology 2012, 23:325604.CrossRef 34. Huang C-H, Lin H-Y, Chen S, Liu C-Y, Chui H-C, Tzeng
Y: Electrochemically fabricated self-aligned 2-D silver/alumina arrays as reliable SERS
sensors. Opt Express 2011, 19:11441–11450.CrossRef 35. Huang Z, Meng G, Huang Q, Chen B, Zhu C, Zhang Z: Large-area Ag nanorod array substrates for SERS: AAO template-assisted fabrication, functionalization, and application in detection PCBs. J Raman Spectrosc 2013, 44:240–246.CrossRef 36. Ruan C, Eres G, Wang W, Zhang Z, Gu B: Controlled fabrication of nanopillar arrays as active substrates for surface-enhanced Raman spectroscopy. Langmuir 2007, 23:5757–5760.CrossRef 37. buy GPCR Compound Library Prokes SM, Alexson DA, Glembocki OJ, Park HD, Rendell RW: Effect of crossing geometry on the plasmonic behavior of dielectric core/metal sheath nanowires. Appl Phys Lett 2009, 94:093105.CrossRef 38. Prokes SM, Glembocki OJ, Rendell RW, Ancona MG: Enhanced plasmon coupling in crossed dielectric/metal nanowire composite geometries and applications to surface-enhanced Raman spectroscopy. Appl Phys Lett 2007, 90:093105.CrossRef 39. Tao A, Kim F, Hess C, Goldberger J, He RR, Sun YG, Xia YN, Yang PD: Langmuir-Blodgett silver nanowire monolayers for molecular sensing using surface-enhanced Raman spectroscopy. Nano Lett 2003, 3:1229–1233.CrossRef 40. Tian
C, Ding C, Liu S, Yang S, Song X, Ding B, Li Z, Fang J: Nanoparticle attachment on Selleck Cetuximab silver corrugated-wire nanoantenna for large increases of surface-enhanced Raman scattering. ACS Nano 2011, 5:9442–9449.CrossRef 41. Feng M, Zhang M, Song J-M, Li X-G, Yu S-H: Ultralong silver trimolybdate nanowires: synthesis, phase transformation, stability, and their photocatalytic, optical, and electrical properties. ACS Nano 2011, 5:6726–6735.CrossRef 42. Qi J, Li Y, Yang M, Wu Q, Chen Z, Wang W, Lu W, Yu X, Xu J, Sun Q: Large-area high-performance SERS substrates with deep controllable sub-10-nm gap structure fabricated by depositing Au film on the cicada wing. Nanoscale Res Lett 2013, 8:437.CrossRef Competing interests The authors declare that they have no competing interests. Authors’ contributions QJ conceived of the study, carried out the fabrication of the SERS substrates, the measurement and analysis, the simulation, and drafted the manuscript. LY (Yudong) participated in the SERS spectra analysis and discussion.