期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 20, 页码 22873-22880出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c03053
关键词
electrostatic force; optical switch; electrical switch; self-powered sensor; triboelectric nanogenerator
资金
- HKSAR The Research Grants Council Early Career Scheme [24206919]
- HKSAR Innovation and Technology Support Programme Tier 3 [ITS/085/18]
- Chinese University of Hong Kong Direct Grant [4055086]
- Shun Hing Institute of Advanced Engineering [RNE-p5-18]
With the development of the internet of things (IoT) and 5th generation communication technology, construction of smart cities is making a great progress. However, the IoT system needs millions of sensing nodes; therefore, it is rather challenging to power various sensors. Here, we design an electrostatic force-based switch (EFS) that can work as either an optical or an electrical switch. The EFS provides a method to directly detect or control high-voltage electrical systems with delay characteristics. Advantages of the EFS include self-contained delay characteristics, ease of fabrication, low cost, and high stability, especially when used in combination with the triboelectric nanogenerator (TENG) to realize self-powered sensors. Based on the self-powered sensor, a mechanical motion-sensing system is built with high sensitivity and active response to the mechanical trigger. This study proposes a multifunctional self-powered switch, which realizes a high-voltage delay control system and can also combine with the TENG to expand the application of self-powered smart sensing systems.
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