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Light scattering assisted surface plasmon resonance at electrospun nanofiber-coated gold surfaces
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) Schematic vector diagram of SPR assisted by light scattering of the nanofiber at the gold surface, (b) SEM image of the PVP nanofiber deposited on aluminum foil, (c) optical micrograph of PVP nanofiber-coated gold surface illuminated by grazing incidence.

Image of FIG. 2.
FIG. 2.

Polarized reflection spectra of gold surface coated with PVP electrospun nanofibers, p-polarized spectra (solid line) and s-polarized spectra (broken line). Angle of the incidence of the white light is 70°.

Image of FIG. 3.
FIG. 3.

Proposed dispersion relation of SPs and scattered light with various scattering vector that explains the polarized reflection spectrum in Fig. 2. Open circles indicate representative resonance points between the SPs and forward scattering light. Solid circles are the representative ones between the SP and backscattering light. The maximum value of was assumed to be .

Image of FIG. 4.
FIG. 4.

The p-polarized extinction spectra of gold surface coated by 250 nm diameter PVP nanofibers whose deposition time is (a) 1 s and (b) 60 s. The spectra were measured at the incident angle of 70°. The insets in each spectrum showed the optical micrographs of the sample appearances.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Light scattering assisted surface plasmon resonance at electrospun nanofiber-coated gold surfaces