Far-Field Analysis on Reflecting Colors of Dielectric Nanosphere Metasurface

Figure 1

(a) Normalized scattering cross section () of a silicon nanosphere with a diameter () of 150 nm. The inset depicts light scattering by the particle for the incident light along the (-) direction with linear polarization. The angle defines the scattering direction. (b) Resonant wavelengths of electric dipole (ED) and magnetic dipole (MD) modes as functions of Si particle diameter. (c) The far-field patterns of the scattered lights from a Si particle () for different wavelengths, 500 nm, 525 nm, 555 nm, 580 nm, and 610 nm, indicated by (1), (2), (3), (4), and (5), respectively. In each far-field pattern, the left (right) one presents a backward (forward) scattered light pattern. The dotted line circle denotes 45° for backward/forward directions.

(a)

(b)

(c)