Improved surface-enhanced Raman scattering of patterned gold nanoparticles deposited on silicon nanoporous pillar arrays |
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| Authors: | Wei Fen Jiang Xing Fu LiHong Tao Cai Xin Jian Li |
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| Institution: | a Department of Mathematics and Information Science, North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450011, China
b Department of Physics and Laboratory of Material Physics, Zhengzhou University, Zhengzhou 450052, China |
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| Abstract: | Large-area silicon nanoporous pillar arrays (Si-NPA) uniformly coated with gold nanoparticles was synthesized, and surface-enhanced Raman scattering of rhodamine 6G adsorbed on these gold nanoparticles were studied and compared. It's found that Au/Si-NPA substrate has a significantly high Raman signal sensitivity and good homogeneity. These are attributed to gold nanoparticles with narrow particle-size distribution uniformly coated on the surface and to the enlarged specific surface area for adsorption of target molecules brought by the porous silicon pillars. |
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| Keywords: | Surface-enhanced Raman scattering Silicon nanoporous pillar array Evaporation |
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