Journal
ACS NANO
Volume 9, Issue 4, Pages 4236-4243Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.5b00618
Keywords
paper-thin; rollable; triboelectric nanogenerator; acoustic energy harvesting; self-powered sound recording
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Funding
- High-tower Foundation
- Thousands Talents program for pioneering researchers and their innovation team, China
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A 125 mu m thickness, rollable, paper-based triboelectric nanogenerator (TENG) has been developed for harvesting sound wave energy, which is capable of delivering a maximum power density of 121 mW/m(2) and 968 W/m(3) under a sound pressure of 117 dB(SPL). The TENG is designed in the contact-separation mode using membranes that have rationally designed holes at one side. The TENG can be implemented onto a commercial cell phone for acoustic energy harvesting from human talking; the electricity generated can be used to charge a capacitor at a rate of 0.144 V/s. Additionally, owing to the superior advantages of a broad working bandwidth, thin structure, and flexibility, a self-powered microphone for sound recording with rolled structure is demonstrated for all-sound recording without an angular dependence. The concept and design presented in this work can be extensively applied to a variety of other circumstances for either energy-harvesting or sensing purposes, for example, wearable and flexible electronics, military surveillance, jet engine noise reduction, low-cost implantable human ear, and wireless technology applications.
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