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Production of Colourful Pigments Consisting of Amorphous Arrays of Silica Particles
Author(s) -
Yoshioka Shinya,
Takeoka Yukikazu
Publication year - 2014
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201402095
Subject(s) - pigment , amorphous solid , amorphous silica , saturation (graph theory) , materials science , nanotechnology , chemical engineering , chemistry , organic chemistry , mathematics , engineering , combinatorics
It is desirable to produce colourful pigments that have anti‐fading properties and are environmentally friendly. In this Concept, we describe recently developed pigments that exhibit such characteristics. The pigments consist of amorphous arrays of submicron silica particles, and they exhibit saturated and angle‐independent structural colours. Variously coloured pigments can be produced by changing the size of the particles, and the saturation of the colour can be controlled by incorporating small amounts of black particles. We review a simple analysis that is useful for interpreting the angular independence of the structural colours and discuss the remaining tasks that must be accomplished for the realistic application of these pigments.