Figure 2 | Scientific Reports

Figure 2

From: Fabrication of Ion-Shaped Anisotropic Nanoparticles and their Orientational Imaging by Second-Harmonic Generation Microscopy

Figure 2

Characterization of vertically oriented (0°) gold NR and NW particles.

(a) HAADF cross-sectional image of an isolated Au nanorod (length 100 nm, diameter 14,5 nm, and aspect ratio ) and (b) corresponding high-resolution plasmon field intensity map across the particles obtained by electron energy loss spectroscopy (EELS). Resonant modes are observed at 1.15, 1.65, and 1.91 eV, which correspond to the dipolar as well as the first and second higher-order longitudinal modes. (c) HAADF cross-sectional image of an isolated gold NW (length 224 nm, diameter 8 nm, and aspect ratio 28) and (d) corresponding EELS plasmon map. Resonant modes are observed at 0.73 ± 0.05 eV, 1.17 ± 0.05 eV, 1.45 ± 0.05 eV and 1.64 ± 0.05 eV.

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