Flow and level sensing by waveform coupled liquid-solid contact-electrification

Wang, Y.; Wang, Z.; Zhao, Da; Yu, Xin; Cheng, Tinghai; Bao, Gang; Wang, Z.L.

doi:10.1016/j.mtphys.2021.100372

Cited by 21 publications

(15 citation statements)

References 44 publications

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“…The triboelectric nanogenerator (TENG) based on the coupling of contact electrification and electrostatic induction was invented by Prof. Wang and his team . Due to its simple working mechanism and fabrication process, low cost, and efficient energy conversion, the TENG has been developed for micro/nano power sources, , self-powered sensing, − blue energy, − and high-voltage power sources. , Among them, the liquid–solid triboelectric nanogenerator has received extensive attention, and it has been used for motion sensors, , chemical sensors, − microfluidic actuators, , corrosion protection, , level gauges, − and so on. , For instance, Zhao et al . developed prototypes of a drainage bottle droplet sensor and a smart intravenous injection monitor based on the superhydrophobic liquid–solid contact TENG .…”

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confidence: 99%

Nonintrusion Monitoring of Droplet Motion State via Liquid–Solid Contact Electrification

et al. 2021

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Droplet motion state monitoring is important in microfluidic applications, such as biomedicine, drug delivery, and metal ion extraction. Here, a nonintrusion monitoring method of droplet motion state via liquid–solid contact electrification is proposed, and a triboelectric droplet motion state sensor (TDMSS) is fabricated. Droplet counting and droplet size monitoring can be realized by signal processing and information extracting of the voltage pulse. The experimental results show that the number of droplets increases linearly with the increase of liquid flow, and the linearity is 0.9854. Moreover, TDMSS can stably monitor the number of droplets in different motion states. In addition, the output pulse width is sensitive to droplet size, and the droplet length ranges from 3 to 13.5 mm. More importantly, TDMSS can realize the function of droplet counting and size monitoring of a conductive liquid and accurate droplet counting under different inclination angles and motion states. This work not only provides a nonintrusion method for droplet motion state monitoring but also makes a solid step for microfluidic sensing technology based on a triboelectric nanogenerator.

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confidence: 99%

Nonintrusion Monitoring of Droplet Motion State via Liquid–Solid Contact Electrification

et al. 2021

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“…TENGs based on the solid-liquid contact electrification mechanism can serve as an effective tool for chemical sensing to harvest electrostatic and mechanical energy in liquid environments. [225,226] The contact between the liquid and the solid is more complete, so the energy harvesting is more complete and the triboelectric output is higher. In addition, the TENG based on solid-liquid contact electrification is less affected by the surrounding environment, and the liquid layer can also be used as a good lubricant without wear problems, thereby improving durability.…”

Section: Solid-liquid Contact Electrificationmentioning

confidence: 99%

From Triboelectric Nanogenerator to Multifunctional Triboelectric Sensors: A Chemical Perspective toward the Interface Optimization and Device Integration

Xiang

Huang

Wang

et al. 2022

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Figure 2. a) Scheme of interface modified liquid doping PDMS composite. Reproduced with permission. [59] Copyright 2020, Elsevier. b) Schematic illustration for preparing the controllable micro-patterned DN-PDMS film and Device structure of the micro-patterned DN-PDMS TENG. Reproduced with permission. [82] Copyright 2020, Royal Society of Chemistry. c) Schematic diagram of NB treatment process and TENG, and triboelectric performance of the NB-treated TENG. Reproduced with permission. [4] Copyright 2019, Royal Society of Chemistry. d) Scheme of functional high permittivity liquid doping PDMS composite and fabrication of high permittivity liquid doping PDMS composite and fluorine functionalization. Reproduced with permission. [86]

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“…Wang et al. [ 165 ] designed a flow sensor based on Venturi‐type TENG, and the monitoring range is 95–215 L min −1 . Zhang et al.…”

Section: Solid–liquid Interface Tengs For Blue Energy Harvestingmentioning

confidence: 99%

Recent Advances towards Ocean Energy Harvesting and Self‐Powered Applications Based on Triboelectric Nanogenerators

Fan

Guo

et al. 2021

Adv Elect Materials

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Ocean contain abundant clean energies including tidal and wave, but such energies are known for low frequency and large excitation amplitude, posing considerable challenges for high‐efficiency energy conversion. As an emerging technology, triboelectric nanogenerators (TENGs) have been widely used in energy harvesting and novel sensor design due to their high sensitivity and flexible structure. Meanwhile, they show great advantages in the low‐frequency environment (<5 Hz), and display great potential for deployment in remote ocean waters, and construction of large‐scale TENG networks. In this review, firstly, the working principle of TENGs and various configurations developed for the marine environment are introduced, which mainly include solid–solid and solid–liquid interfaces. Then, from the viewpoint of power improvement, authors are most concerned about the modification methods of materials such as surface modification, electron injection, and chemical doping. Meanwhile, improved technologies for energy harvesters in marine environment are discussed in detail, such as improving the hydrophobicity and degradation of materials, studying the self‐healing ability of materials, and designing power management circuits. Finally, the current challenges are summarized, and research trends are given from both short‐term and long‐term perspectives.

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Flow and level sensing by waveform coupled liquid-solid contact-electrification

Cited by 21 publications

References 44 publications

Nonintrusion Monitoring of Droplet Motion State via Liquid–Solid Contact Electrification

Nonintrusion Monitoring of Droplet Motion State via Liquid–Solid Contact Electrification

From Triboelectric Nanogenerator to Multifunctional Triboelectric Sensors: A Chemical Perspective toward the Interface Optimization and Device Integration

Recent Advances towards Ocean Energy Harvesting and Self‐Powered Applications Based on Triboelectric Nanogenerators

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