Butterfly Wing Microstructure Inspired Solid/Porous Alternating Layered Structures: In Situ Visualization of Confined Foaming.

ABSTRACT: This study explores confined foaming in micro-/nano-layered (MNL) solid/porous alternating structures inspired by the hierarchical architecture of Ulysses butterfly wings. Biomimetic MNL films composed of alternating polycarbonate (PC) and polymethyl methacrylate (PMMA) layers (17-513 layers) are fabricated via advanced coextrusion and foaming techniques. In situ visualization reveals confinement effects dependent on layer thickness; while nucleation primarily occurrs at PC/PMMA interfaces due to reduced energy barriers, a strong confinement zone within 10 µm of the interfaces significantly restricts cell growth, most notably in the 129-layer and 513-layer samples, where single-cell rows are observed. Thermal regulation tests show that the 513-layer bio-mimic structure reduces temperature

SUBMITTER: Zhao J 

PROVIDER: S-EPMC12508713 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature