Figure 4: Measured and predicted colour palette.
From: Polarization-independent actively tunable colour generation on imprinted plasmonic surfaces
(a) The palette of obtainable colour for structures of period between 200 and 380 nm as a function of applied voltage. (b) Simulated and experimental reflectance spectra of the selected surfaces as a function of period with the ON state anisotropic effective index [nx ny nz]=[1.55 1.55 1.97] and 13.6 V μm−1 applied electric field, respectively. Dashed black trend lines show the linear relationship between plasmonic absorption and periodicity. (c) Simulated and experimental reflectance spectra of the surface with period 300 nm as a function of surrounding index and applied electric field, respectively.
