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- W2944243533 abstract "A controllable and flexible route is presented for the fabrication of Ag-nanosheets-built micro/nanostructural ordered arrays via in situ conversion on the Cu2O-coated silicon nanocone (SNC) platform in the AgNO3-contained solution. The platform is pre-prepared by the reactive ion etching of the organic colloidal monolayer-covered silicon wafer, Cu sputtering deposition and in situ oxidation. The obtained Ag micro/nanostructured array consists of nearly spherical and micro-sized particles, which are hexagonally arranged on the substrate. The spherical particles are built of the vertically standing and cross-linked nanosheets with about 30 nm in thickness. This Ag-nanosheets-built array shows high number density of the edges and nanogaps as well as the robust and homogeneous structure. Its formation is attributed to the in situ conversion reaction on the Cu2O-coated SNC platform and the preferentially-oriented connection of Ag nanoparticles. Such Ag array has shown significantly higher surface enhanced Raman scattering (SERS) activity than the Ag nanoparticles' film-covered SNC array, with the enhancement factor up to 107 and the detection limitation down to ∼1 ppt level to the test molecules 4-aminothiophenol, as well as the good reproducibility in measurements. This study not only presents a controllable and flexible fabrication route to the plasmonic micro/nanostructured arrays but also provides the highly efficient and the practical chips for the SERS-based devices." @default.
- W2944243533 created "2019-05-16" @default.
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- W2944243533 date "2019-06-05" @default.
- W2944243533 modified "2023-09-23" @default.
- W2944243533 title "Fabrication of Ag-nanosheets-built micro/nanostructured arrays via <i>in situ</i> conversion on Cu<sub>2</sub>O-coated Si nanocone platform and their highly structurally-enhanced SERS effect" @default.
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- W2944243533 doi "https://doi.org/10.1088/1361-6528/ab1f98" @default.
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