High-Performance Al/PDMS TENG with Novel Complex Morphology of Two-Height Microneedles Array for High-Sensitivity Force-Sensor and Self-Powered Application

Kai Hong Ke, Chen Kuei Chung

研究成果: Article同行評審

22 引文 斯高帕斯(Scopus)

摘要

Triboelectric nanogenerators (TENGs) are widely applied to self-powered devices and force sensors. TENGs consist of the electrode-layer frequently made of high-cost conductors (Ag, Au, ITO) and the tribo-layer of rigid negative-triboelectricity fluoropolymers (PTFE, FEP). The surface morpholoy is studied for enhancing performance. Here, a high-performance Al/PDMS-TENG is proposed with a complex morphology of overlapped deep two-height microneedles (OL-DTH-MN) fabricated by the integrated process of low-cost CO2 laser ablation and PDMS casting for self-powered devices and high-sensitivity force/pressure sensors. The high open-circuit voltage and short-circuit current of the OL-DTH-MN-TENG are 167 V and 129.3 µA. Also, the sensitivity of the force/pressure sensor of the OL-DTH-MN-TENG is very high, 1.03 V N−1 and about 3.11 V kPa−1, at an area of 30 cm2 that is much higher than the sensitivity of about 0.18–0.414 V N−1 and 0.013–0.29 V kPa−1 of conventional TENG sensors. Meanwhile, the high-performance OL-DTH-MN-TENG not only exhibits the energy storage capability of charging a 0.1 µF capacitor to 2.75 V at 1.19 s, to maximum 3.22 V, but also activates various self-powered devices including lighting colorful 226 LEDs connected in series, the “2020-ME-NCKU” advertising board, a calculator and a temperature sensor. Numerical simulation is also performed to support the experiments.

原文English
文章編號2001209
期刊Small
16
發行號35
DOIs
出版狀態Published - 2020 九月 1

All Science Journal Classification (ASJC) codes

  • 生物技術
  • 生物材料
  • 化學 (全部)
  • 材料科學(全部)

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