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• W2027777658 endingPage "434020" @default.
• W2027777658 startingPage "434020" @default.
• W2027777658 abstract "This paper describes a systematic study of the surface-enhanced Raman scattering (SERS) activity of hot spots formed between a Ag nanowire and a Ag nanocube with sharp corners. We investigated two distinct dimer structures: (i) a nanocube having one side face nearly touching the side face of a nanowire, and (ii) a nanocube having one edge nearly touching the side face of a nanowire. The field enhancements for the dimers displayed a strong dependence on laser polarization, and the strongest SERS intensities were observed for polarization along the hot-spot axis. Moreover, the detected SERS intensities were dependent on the hot-spot structure, i.e., the relative orientation of the Ag nanocube with respect to the nanowire's side face. When the dimer had a face-to-face configuration, the enhancement factor EF(dimer) was 1.4 x 10(7). This corresponds to 22-fold and 24-fold increases compared to those for individual Ag nanowires and nanocubes, respectively. Conversely, when the dimer had an edge-to-face configuration, EF(dimer) was 4.3 x 10(6). These results demonstrated that the number of probe molecules adsorbed at the hot spot played an important role in determining the detected SERS intensities. EF(dimer) was maximized when the dimer configuration allowed for a larger number of probe molecules to be trapped within the hot-spot region." @default.
• W2027777658 created "2016-06-24" @default.
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• W2027777658 creator A5041556229 @default.
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• W2027777658 date "2009-10-02" @default.
• W2027777658 modified "2023-09-23" @default.
• W2027777658 title "Measuring the surface-enhanced Raman scattering enhancement factors of hot spots formed between an individual Ag nanowire and a single Ag nanocube" @default.
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• W2027777658 doi "https://doi.org/10.1088/0957-4484/20/43/434020" @default.
• W2027777658 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/19801754" @default.
• W2027777658 hasPublicationYear "2009" @default.
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