Scalable Nacre‐Like Photonic Paper with Enhanced Mechanical Stability for Rewritable Printing (Small 3/2026)

Photonic Paper In article number 2509143, Yunpeng Wang, Wenbin Niu, Xi Yao, and co-workers report a nacre-inspired photonic paper fabricated via a roll-to-roll-assisted blade-coating process. The photonic paper exhibits a highly aligned "brick-and-mortar" architecture composed of α-zirconium phosphate nanoplates and a hydrogen-bonded polymer matrix, achieving an optimal balance between mechanical robustness, optical tunability, and scalability. This nacre-like design enables high-resolution and rewritable multicolour printing, as well as excellent flame retardancy, providing a promising platform for next-generation structural-colour paper.