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Single-digit-micrometer thickness wood speaker

dc.contributor.authorGan, Wentao
dc.contributor.authorChen, Chaoji
dc.contributor.authorKim, Hyun-Tae
dc.contributor.authorLin, Zhiwei
dc.contributor.authorDai, Jiaqi
dc.contributor.authorDong, Zhihua
dc.contributor.authorZhou, Zhan
dc.contributor.authorPing, Weiwei
dc.contributor.authorHe, Shuaiming
dc.contributor.authorXiao, Shaoliang
dc.contributor.authorYu, Miao
dc.contributor.authorHu, Liangbing
dc.identifier.citationGan, W., Chen, C., Kim, H. et al. Single-digit-micrometer thickness wood speaker. Nat Commun 10, 5084 (2019).
dc.descriptionPartial funding for Open Access provided by the UMD Libraries' Open Access Publishing Fund.en_US
dc.description.abstractThin films of several microns in thickness are ubiquitously used in packaging, electronics, and acoustic sensors. Here we demonstrate that natural wood can be directly converted into an ultrathin film with a record-small thickness of less than 10 μm through partial delignification followed by densification. Benefiting from this aligned and laminated structure, the ultrathin wood film exhibits excellent mechanical properties with a high tensile strength of 342 MPa and a Young’s modulus of 43.6 GPa, respectively. The material’s ultrathin thickness and exceptional mechanical strength enable excellent acoustic properties with a 1.83-times higher resonance frequency and a 1.25-times greater displacement amplitude than a commercial polypropylene diaphragm found in an audio speaker. As a proof-of-concept, we directly use the ultrathin wood film as a diaphragm in a real speaker that can output music. The ultrathin wood film with excellent mechanical property and acoustic performance is a promising candidate for next-generation acoustic speakers.en_US
dc.publisherSpringer Natureen_US
dc.titleSingle-digit-micrometer thickness wood speakeren_US
dc.relation.isAvailableAtA. James Clark School of Engineeringen_us
dc.relation.isAvailableAtMaterials Science & Engineeringen_us
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_us
dc.relation.isAvailableAtUniversity of Maryland (College Park, MD)en_us

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