Figures at a glance

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FIGURE 1

Figure1: Design of the study, Gold nanoparticles made of nanoring and Nanodisc geometries were illuminated from top with linearly polarized plane wave

FIGURE 2

Figure2: Design of the study. (a) Nano disk (with thickness H and diameter D) is illuminated by a plane wave with electric field E and wave vector K from the top. (b) And (c), respectively, represent designs of Nano cube (with size L) and Nano ring (with thickness H and diameter D) used in this study to investigate the shape effect on the optical properties of Au nanoparticles

FIGURE 3

Figure3: Scattering cross section (a) and local field intensities (b& c) of Au Nanodisc particle as a function of the particle diameter

FIGURE 4

Figure4: Scattering cross section (a) and resonantly calculated near-field profiles (b & c) of nanoring particle as a function of the particle size

FIGURE 5

Figure5: Sensitivity of 200nm sized Au Nanodisc particle (a) scattering spectra of the single ND as a function of refractive index. (b) Corresponding refractive index unit of the ND displayed in (a)

FIGURE 6

Figure6: Sensitivity of Au nanoring particle (a) scattering resonance shift of the NR as a function of refractive index of the surrounding environment. (b) Refractive index unit of the NR displayed in (a)

FIGURE 7

Figure7: Optical properties of Au Nano cube with different size L = 100 nm, 150 nm and 200 nm. (a) Scattering cross section as a function of Nano cube size. (b) And (c) Resonantly calculated near-field profiles of Nano cube with sizes of L = 100 nm and 200 nm, respectively