Nanostructured surface coating for generating novel visual appearances

Abstract

Nanostructured surface coating (1) configured to generate visual appearances in a visible spectrum range, comprising: —a first layer comprising a random distribution of nanoparticles (2); —a substrate (3), on which the first layer is arranged; —the nanoparticles having an optical refraction index npart having a value suitable for each individually diffusing the incident light; —the nanoparticles being arranged so that the mean distance between two adjacent particles d is defined in accordance with the following relationship so as to produce interference between the light diffused by the particles: 2 R≤d≤max (λ/np), where R is the smallest geometric radius of a circle surrounding the particle, λ is the greatest wavelength of the visible spectrum, and np is the optical refractive index of the medium in which the nanoparticles are dispersed.

Dependencies are inferred from the claim text.