Figure 2 | Scientific Reports

Figure 2

From: Angle-Insensitive Structural Colours based on Metallic Nanocavities and Coloured Pixels beyond the Diffraction Limit

Figure 2

Colour demonstrations with ultra-high resolution and polarization dependent images.

(a) The SEM images and (b) optical image under white light illumination of fabricated coloured images in the format of the Olympic rings. The full range of CMY colours are achieved by sweeping W from 40 to 90 nm, with P and D fixed at 180 nm and 170 nm respectively. (b) Shows that even a single short segmented nano-groove demonstrates colour response. (c) Demonstrates utilizing polarization dependence to actively change the displayed image, where grooves with W = 40 for cyan and W = 60 nm for magenta under TM illumination.

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