Issue 10, 2021

Elastomer-immobilized tunable colloidal photonic crystal films with high optical qualities and high maximum strain

Abstract

High-quality elastomer-immobilized colloidal crystal films with low particle volume fractions can be prepared using hydrogel-immobilized single-crystalline colloidal crystal films processed by shear flow. The solvent-free elastomer film demonstrated a full-colour change from red to blue with high uniformity over a cm2 scale, achieved by varying the mole fraction of monomers in the hydrogel. Owing to the low particle volume fraction, the elastomer film exhibited a colour change from red to blue upon stretching, and the maximum strain reached 120%. The film provided reversible and repeatable colour changes during extension without residual strain. The prepared films have the potential to be used in simple strain sensors to express invisible strains through colour change.

Graphical abstract: Elastomer-immobilized tunable colloidal photonic crystal films with high optical qualities and high maximum strain

Supplementary files

Article information

Article type
Paper
Submitted
15 Nah 2021
Accepted
08 Agd 2021
First published
15 Agd 2021
This article is Open Access
Creative Commons BY license

Mater. Adv., 2021,2, 3294-3299

Elastomer-immobilized tunable colloidal photonic crystal films with high optical qualities and high maximum strain

H. Tajima, A. Amano and T. Kanai, Mater. Adv., 2021, 2, 3294 DOI: 10.1039/D1MA00133G

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