Cicada rib-inspired tough films through nanoconfined crystallization for use in acoustic transducers.

ABSTRACT: Acoustic transducers require films that demonstrate both toughness and fatigue resistance, presenting notable challenges when achieved through conventional nanoscale reinforcing strategies. Here, we found that the rib structure of a cicada's tymbal exhibits exceptional toughness and fatigue resistance, attributed to its unique architecture composed of alternating soft and stiff polymer layers. Inspired by this rib structure, we developed a robust artificial rib film (ARF) using a nanoconfined crystallization strategy that involves the deposition of soft polyethylene oxide and stiff phenol formaldehyde. The ARF demonstrates a toughness amplification factor twice that of the cicada's tymbal rib and exhibits an exceptionally long fatigue life. The nanoconfined crystallization restricts molecu

SUBMITTER: Mao J 

PROVIDER: S-EPMC12422198 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature