Journal
OPTIK
Volume 244, Issue -, Pages -Publisher
ELSEVIER GMBH
DOI: 10.1016/j.ijleo.2021.167537
Keywords
Surface-enhanced Raman scattering (SERS); Silver nanowires (Ag NWs); Rhodamine 6G (R6G); Finite difference time domain (FDTD)
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Funding
- National Natural Science Foundation of China [61805221]
- Zhuhai Nano Metals Technology Co., Ltd
- Opening Project of Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education [LYJ18203]
- Sichuan University of Science and Engineering [2017RCL43, 2017RCL46]
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Experimental and theoretical studies have shown that the diameter of silver nanowires has a certain influence on SERS activity, which increases within a certain range with the diameter, reaching a maximum EF value of 5.0 x 10(9).
Silver nanostructure has excellent surface-enhanced Raman scattering (SERS) properties. However, the influence of the diameter of silver nanowires on the SERS is still unclear. To this end, four Ag NWs with diameters of 20, 25, 31, and 38 nm were designed and fabricated. The effects of diameter on the SERS were studied experimentally and simulated theoretically. The results indicate that the SERS activities of the Ag NWs increase with the diameter within a certain range. The highest EF value is up to 5.0 x 10(9). These results may provide a reference for the design of high-performance Ag NWs SERS substrates.
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