The unique advantages and the exciting application prospects of AIEgens have triggered
booming developments in this area in recent years. Among them, stimuli‐responsive …

Optically variable devices (OVDs) are in tremendous demand as optical indicators against
the increasing threat of counterfeiting. Conventional OVDs are exposed to the danger of …

Abstract Development of polymer-based smart materials, which can autonomously alter their
physical and/or chemical properties when exposed to external stimuli, is a thriving research …

Polymer-based responsive structural color materials are polymers with ordered
microstructures that can change colors. They offer unique advantages and present a novel …

Nanocellulose is currently in the limelight of extensive research from fundamental science to
technological applications owing to its renewable and carbon‐neutral nature, superior …

Structural colors are colors generated by the interaction between incident light and
nanostructures. Structural colors have been studied for decades due to their promising …

Various kinds of optical devices have been designed for unique functionality based on a
deeper understanding of optical principles. Recently, the research of functional optics has …

Structurally coloured materials that change their colour in response to mechanical stimuli
are uniquely suited for optical sensing and visual communication,,–. The main barrier to their …

Structural colors are promising candidates for their antifading and eco-friendly
characteristics. However, high cost and complicated processing inevitably hinder their …

Swarms, which stem from collective behaviors among individual elements, are commonly
seen in nature. Since two decades ago, scientists have been attempting to understand the …