Three-dimensional flexible structures for miniature sensing and energy-harvesting devices

Weixin Dou, Haoyu Wang, Jing Liu, Mengdi Han, Qikun Li and Rusen Yang

Applied Energy, 2025, vol. 377, issue PB, No S0306261924018385

Abstract: The development of miniature power generators is essential for advancing wearables and portable devices. Triboelectric nanogenerators have emerged as a promising solution, but miniaturization and broadband energy harvesting remain challenging. To address this challenge, this study developed a multi-functional device with 3D structures using a controlled mechanical buckling process. We designed and converted planar precursor layouts into the desired 3D structures for miniature nanogenerators without using additional connecting parts. Changing the topology and dimension of 3D structures expands the device's functionality and adaptability. The compact device works well for sensing and power generation with excellent cyclic stability and broadband energy conversion. The synergy of charge generation with PVDF and charge storage with PI improves the performance of the device. The 3D structure-based miniature device provides a strategic approach to advancing wearable and self-powered sensing technology.

Keywords: 3D structure; Flexibility; Buckling; Energy harvesting; Sensor (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1016/j.apenergy.2024.124455

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