Nanogenerator-based dual-functional and self-powered thin patch loudspeaker or microphone for flexible electronics

Nature Communications
Wei LiNelson Sepúlveda

Abstract

Ferroelectret nanogenerators were recently introduced as a promising alternative technology for harvesting kinetic energy. Here we report the device's intrinsic properties that allow for the bidirectional conversion of energy between electrical and mechanical domains; thus extending its potential use in wearable electronics beyond the power generation realm. This electromechanical coupling, combined with their flexibility and thin film-like form, bestows dual-functional transducing capabilities to the device that are used in this work to demonstrate its use as a thin, wearable and self-powered loudspeaker or microphone patch. To determine the device's performance and applicability, sound pressure level is characterized in both space and frequency domains for three different configurations. The confirmed device's high performance is further validated through its integration in three different systems: a music-playing flag, a sound recording film and a flexible microphone for security applications.

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Citations

Jun 28, 2019·Advanced Materials·Yinji MaXue Feng
Dec 6, 2019·Advanced Materials·Ke HeXiaodong Chen
Oct 17, 2019·Advanced Materials·Young Hoon JungKeon Jae Lee
May 28, 2020·Sensors·Zhiyi WuZhong Lin Wang
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Oct 18, 2019·Sensors·Kai YangSteve Beeby
Mar 14, 2020·Nature Communications·Yang WangYaojin Wang
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Sep 17, 2020·Science Advances·David M TatnellDavid W Horsell
Mar 21, 2020·ACS Applied Materials & Interfaces·Ana RoviscoPedro Barquinha
May 9, 2021·Advanced Materials·Jie AnZhong Lin Wang
Jun 8, 2021·ACS Applied Materials & Interfaces·Zhaohan YuDequn Li
Sep 12, 2019·ACS Applied Materials & Interfaces·Ji Hoon KimHo Seon Ahn
Mar 24, 2020·Chemical Reviews·Guorui ChenJun Chen
Apr 20, 2019·ACS Applied Materials & Interfaces·Yunqi CaoNelson Sepúlveda
May 16, 2020·Nano Letters·Shuwen ZhangZhigang Suo

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Methods Mentioned

BETA
thermal treatment

Software Mentioned

FENG

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