Compared with conventional textile
coloring with dyes and pigments,
structural colored fabrics have attracted broad attention due to the
advantages of eco-friendliness, brilliant colors, and anti-fading
properties. The most investigated structural color on fabrics is originated
from a band gap of multilayered photonic crystals or amorphous photonic
structures. However, limited by the nature of the color generation
mechanism and a multilayered structure, it is challenging to achieve
structural colored fabrics with brilliant noniridescent colors and
high fastness. Here, we propose an alternative strategy for coloring
a fabric based on the scattering of Cu2O single-crystal
spheres. The disordered Cu2O thin layers (<0.6 ÎŒm)
on the surface of fabrics were prepared by a spraying method, which
can generate vivid noniridescent structural color due to the strong
Mie scattering of Cu2O single-crystal spheres. Importantly,
the great mechanical stability of the structural color was realized
by firmly binding Cu2O spheres to the fabric using a commercial
binder. The structural color can be tuned by changing the diameter
of Cu2O spheres. Furthermore, complex patterns can be easily
obtained by spray coating Cu2O spheres with different particle
sizes using a mask. According to color fastness test standards, the
dry rubbing, wet rubbing, and light fastness of the structural color
on fabric can reach level 5, level 4, and level 6, respectively, which
is sufficient to resist rubbing, photobleaching, washing, rinsing,
kneading, stretching, and other external mechanical forces. This coloring
method may carve a practical avenue in textile coloring and has potentials
in other practical applications of structural color.