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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\u2019s tymbal rib and exhibits an exceptionally long fatigue life. The nanoconfined crystallization restricts molecular motion and disperses external forces within the crystalline structure, thereby enhancing its mechanical properties. These improvements enable the ARF to outperform commercial polymer films as an acoustic transducer, achieving 2.7 times increase in frequency response and 2.2 times increase in displacement amplitude.<\/jats:p>","DOI":"10.1126\/sciadv.adx9248","type":"journal-article","created":{"date-parts":[[2025,9,10]],"date-time":"2025-09-10T18:01:02Z","timestamp":1757527262000},"update-policy":"https:\/\/doi.org\/10.34133\/aaas_crossmark","source":"Crossref","is-referenced-by-count":7,"title":["Cicada rib-inspired tough films through nanoconfined crystallization for use in acoustic transducers"],"prefix":"10.1126","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0009-0000-4349-3958","authenticated-orcid":true,"given":"Jiajun","family":"Mao","sequence":"first","affiliation":[{"name":"State Key Laboratory of Bioinspired Interfacial Materials Science, School of Nano Science and Technology, Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou 215123, P. 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