Self-powered electrowetting optical switch driven by a triboelectric nanogenerator for wireless sensing

Wang, Jiaqi; Wang, Haoyu; Li, Xiaoyi; Zi, Yunlong

doi:10.1016/j.nanoen.2019.104140

Cited by 34 publications

(21 citation statements)

References 34 publications

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“…The small area surrounded by the charging and discharging lines may arise from the electrolyte discharging during the fluidic actuation process. [ 44 ] Considering the 300 pF inner capacitance of the Keithley 6514 electrometer as the voltmeter, [ 53 ] the capacitance of the LL is calculated to be around 255.6 pF.…”

Section: Resultsmentioning

confidence: 99%

Tribo‐Induced Color Tuner toward Smart Lighting and Self‐Powered Wireless Sensing

Wang

Yin

et al. 2021

Advanced Science

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The color‐tuning capability of solid‐state lighting (SSL) systems are highly demanded for smart lighting according to the environmental conditions, as well as wireless sensing of the environmental information. In the meanwhile, state‐of‐the‐art triboelectric nanogenerator (TENG)‐based sensing systems rely on bulky and expensive devices, which require cable connections and additional power consumptions. This work aims at solving these challenges, through developing a tribo‐induced color tuner that can be integrated into the vastly distributed commercial SSL system. This tribo‐induced color tuner includes a concentric color conversion plate consisting of (Sr,Ca)AlSiN3:Eu phosphor and TiO2, a tribo‐induced liquid lens, and a rotary freestanding sliding TENG. The color oscillation between purple and pink is achieved upon the tribo‐charging by the TENG, which reveals the input mechanical motion signals. The signal can be conveniently sent by everywhere‐existed lamps and processed by everyone‐owned smartphone cameras or closed‐circuit televisions. Through this approach, the function of wireless sensing is achieved without the need of preamplification, with no additional power supply required, as demonstrated for wireless sensing of the rotation speed. The smart lighting for underwater photographing is also demonstrated by the color‐tunable SSL system with the best imaging quality achieved.

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Section: Resultsmentioning

confidence: 99%

Tribo‐Induced Color Tuner toward Smart Lighting and Self‐Powered Wireless Sensing

Wang

Yin

et al. 2021

Advanced Science

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“…Liquids actuated by TENGs not only can be used to carry objects serving as motion-controlled mini-vehicles but also enable the self-powered wireless sensing. 87 Basically, TENGs are born self-powered mechanical sensors, where the output voltage signal corresponds to the mechanical motions. Since their invention in 2012, TENGs have been widely applied as a self-powered active sensor, including but not limited to pressure measurements, displacement detections, and vibration characterizations.…”

Section: Self-powered Wireless Sensing Based On Tribo-induced Liquid mentioning

confidence: 99%

“…10, a self-powered electrowetting optical switch (EOS) triggered by a TENG was proposed by Wang et al for wireless sensing applications. 87 The demonstrated EOS consists of an FS-TENG and an electrically tunable liquid lens (ETULL) made of 10% NaCl solution and purified olive oil. In the ETULL, the NaCl solution and olive oil serve as conducting and insulating liquids, respectively.…”

Section: Self-powered Wireless Sensing Based On Tribo-induced Liquid mentioning

confidence: 99%

High-voltage applications of the triboelectric nanogenerator—Opportunities brought by the unique energy technology

Wang

et al. 2019

MRS Energy & Sustainability

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“…[ 35–38 ] It can obtain a higher output voltage, which makes it possible for simpler integration of self‐charging power sources. [ 38–43 ]…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Self‐Charging Electrochromic Supercapacitors Driven by Direct‐Current Triboelectric Nanogenerators

Guo

Cong

Guo

et al. 2021

Adv Funct Materials

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Electrochromic supercapacitor devices (ESCDs) are highly promising for energy‐saving applications or smart windows, whereas they still require electrical energy inputs. In this study, a self‐charging ESCD (SC‐ESCD) based on the ESCD and a sliding‐mode direct‐current triboelectric nanogenerators is successfully proposed. The SC‐ESCD cannot merely convert mechanical sliding kinetic energy into electrical energy and store the electricity in electrochromic supercapacitors but can also show optical responses to the mechanical sliding motions. The prominent electrochemical performances of the SC‐ESCD are confirmed by the high areal capacitance (15.2 mF cm−2 at 0.1 mA cm−2) and stable cycling performance (99% for 5000 cycles). Besides, it can be prepared into arbitrary characters or patterns to adapt to various applications. The study demonstrates a potential approach to develop multifunctional self‐charging power sources which combine energy harvesting, energy storage, and electrochromic functions.

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Self-powered electrowetting optical switch driven by a triboelectric nanogenerator for wireless sensing

Cited by 34 publications

References 34 publications

Tribo‐Induced Color Tuner toward Smart Lighting and Self‐Powered Wireless Sensing

Tribo‐Induced Color Tuner toward Smart Lighting and Self‐Powered Wireless Sensing

High-voltage applications of the triboelectric nanogenerator—Opportunities brought by the unique energy technology

Multifunctional Self‐Charging Electrochromic Supercapacitors Driven by Direct‐Current Triboelectric Nanogenerators

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