Mechanically guided 4D printing of a triboelectricity-driven acoustic transducer for self-powered and intelligent voice recognition

IF 12.3 1区 材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Dongik Kam, Girak Gwon, Yoonsang Ra, Donghan Lee, Yu-seop Kim, Joonmin Chae, Jong Woo Kim, Dongwhi Choi
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引用次数: 0

Abstract

Triboelectricity-driven acoustic transducers with various merits have demonstrated significant potential in energy harvesting and self-powered sensing. The transducers generally require additionally a spacer and a corresponding exquisite process for smooth operation, which provides an unnecessary interface between the elements. The exploration of a novel manufacturing approach for triboelectricity-driven acoustic transducers is warranted to resolve this issue. Here, Triboelectricity-driven Oscillating Nano-Electricity generator (TONE) developed via mechanically guided four-dimensional (4D) printing is introduced for acoustic energy harvesting and self-powered voice recognition. The mechanically buckled structure of the TONE facilitates its smooth oscillation by sound wave without the use of an additional spacer, enabling the TONE to exhibit outputs of 156 V and 10 μA. The output characteristics of the TONE are analyzed based on the acoustic-structural-triboelectric interaction mechanism. The TONE demonstrates practical versatility by providing power to commercial electronics from controlled/daily sound and being utilized in artificial intelligence-based human voice recognition sensors.

Abstract Image

用于自供电和智能语音识别的摩擦电驱动声学换能器的机械引导4D打印
摩擦电驱动的声换能器具有各种优点,在能量收集和自供电传感方面显示出巨大的潜力。换能器通常需要额外的间隔器和相应的精美工艺才能顺利运行,这在元件之间提供了不必要的接口。为了解决这一问题,有必要探索一种新的摩擦电驱动声换能器制造方法。本文介绍了通过机械引导四维(4D)打印开发的摩擦电驱动振荡纳米发电机(TONE),用于声学能量收集和自供电语音识别。TONE的机械屈曲结构有助于其通过声波平滑振荡而无需使用额外的间隔,使TONE能够显示156 V和10 μA的输出。基于声-结构-摩擦-电相互作用机理,分析了TONE的输出特性。TONE展示了实用的多功能性,为商业电子设备提供来自受控/日常声音的电力,并用于基于人工智能的人类语音识别传感器。
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来源期刊
CiteScore
17.10
自引率
4.80%
发文量
91
审稿时长
6 weeks
期刊介绍: npj Flexible Electronics is an online-only and open access journal, which publishes high-quality papers related to flexible electronic systems, including plastic electronics and emerging materials, new device design and fabrication technologies, and applications.
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