Cumulative charging behavior of water droplet driven freestanding triboelectric nanogenerators toward hydrodynamic energy harvesting

Zhao, Leilei; Liu, Liqiang; Yang, Xiya; Hong, Hongxin; Yang, Qianming; Wang, Jianwei; Tang, Qunwei

doi:10.1039/d0ta01698e

Cited by 83 publications

(71 citation statements)

References 36 publications

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“…This charge, accordingly, induces an electric field, which affects the protein properties. Such an effect can be observed for both water (and aqueous solutions [34][35][36][37]) and non-aqueous liquids [6,38]. We also demonstrated that the properties of a protein in a solution are affected by the flow of water flow through a coiled pipe [8].…”

Section: Discussionmentioning

confidence: 56%

AFM Study of the Influence of Glycerol Flow on Horseradish Peroxidase near the in/out Linear Sections of a Coil

et al. 2021

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Flow-based coiled systems, through which a heat transfer fluid (such as glycerol) is pumped, are widely used for thermal stabilization of bioreactors and biosensor cuvettes and cells. Previously, using horseradish peroxidase (HRP) as a model protein, we have demonstrated that the incubation of a protein solution in a flow-based system over coiled pipe with flowing glycerol leads to a change in the adsorption properties of the protein macromolecules. Herein, we have studied the effect of the glycerol flow on the properties of HRP, the solution of which was placed differently: i.e., near either the inflow or the outflow linear sections of the pipe, while the coiled section of the pipe was shielded with a grounded metallic cover. Atomic force microscopy (AFM) has been employed in order to visualize the HRP protein macromolecules adsorbed from its solution onto the mica substrate surface. The quantity of adsorbed protein was estimated based on the AFM data. The enzymatic activity of HRP was estimated by spectrophotometry. We demonstrate that a change in the properties of HRP enzyme was observed after the incubation of its solution near the inflow/outflow linear sections of the pipe with flowing glycerol. Namely, after the incubation of HRP solution near the inflow section, a decrease in the protein adsorption onto mica was observed, but its enzymatic activity remained unchanged in comparison to the control sample. In another case, when the HRP solution was incubated near the outflow section, an increased protein adsorption was observed, while the enzyme exhibited considerably lower activity.

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Section: Discussionmentioning

confidence: 56%

AFM Study of the Influence of Glycerol Flow on Horseradish Peroxidase near the in/out Linear Sections of a Coil

et al. 2021

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“…The observed effect of the water, flowing through the coiled silicone pipe, on the adsorbability of HRP is apparently explained by the electromagnetic nature of the flow-induced field. The induction of such an electromagnetic field obviously occurs owing to a triboelectric effect consisting of a generation of charge in the liquid, flowing along a polymeric surface [ 8 , 29 , 30 , 31 , 32 , 33 , 34 ]. The triboelectrically induced charges induce an electromagnetic field, which, in turn, affects the protein during the incubation of its solution near the coil.…”

Section: Discussionmentioning

confidence: 99%

AFM and FTIR Investigation of the Effect of Water Flow on Horseradish Peroxidase

et al. 2021

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Atomic force microscopy (AFM)-based fishing is a promising method for the detection of low-abundant proteins. This method is based on the capturing of the target proteins from the analyzed solution onto a solid substrate, with subsequent counting of the captured protein molecules on the substrate surface by AFM. Protein adsorption onto the substrate surface represents one of the key factors determining the capturing efficiency. Accordingly, studying the factors influencing the protein adsorbability onto the substrate surface represents an actual direction in biomedical research. Herein, the influence of water motion in a flow-based system on the protein adsorbability and on its enzymatic activity has been studied with an example of horseradish peroxidase (HRP) enzyme by AFM, attenuated total reflection Fourier-transform infrared spectroscopy (ATR-FTIR) and conventional spectrophotometry. In the experiments, HRP solution was incubated in a setup modeling the flow section of a biosensor communication. The measuring cell with the protein solution was placed near a coiled silicone pipe, through which water was pumped. The adsorbability of the protein onto the surface of the mica substrate has been studied by AFM. It has been demonstrated that incubation of the HRP solution near the coiled silicone pipe with flowing water leads to an increase in its adsorbability onto mica. This is accompanied by a change in the enzyme’s secondary structure, as has been revealed by ATR-FTIR. At the same time, its enzymatic activity remains unchanged. The results reported herein can be useful in the development of models describing the influence of liquid flow on the properties of enzymes and other proteins. The latter is particularly important for the development of biosensors for biomedical applications—particularly for serological analysis, which is intended for the early diagnosis of various types of cancer and infectious diseases. Our results should also be taken into account in studies of the effects of protein aggregation on hemodynamics, which plays a key role in human body functioning.

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“…Furthermore, it has been verified that the effective contact area between the water droplet and FEP film was changed in the dynamic dropping process in earlier research. [41] When the droplet recedes from the ITO electrode and gets closer to another ITO electrode, the water droplet shrinks and involves fewer positive charges due to the reduced effective contact area. Thus, the electrons flow to the opposite direction due to both the rolling process of the water droplet and the change in charge amount of the water droplet through spreading and shrinking, (Figure 2a-iii).…”

Section: Working Mechanism Of the Fhngmentioning

confidence: 99%

“…[27][28][29][30][31][32] The TENGs and PENGs can convert electro-static energy and mechanical impact energy of raindrops into electrical energy, respectively. [33][34][35][36][37][38][39][40][41] The rain-TENGs were developed in separate form to directly harvest electro-static energy of raindrops based on the contact-electrification on solid/liquid interfaces. On the other hand, the rain-PENGs were developed in separate form to harvest mechanical impact energy of raindrops based on the strain on the device after raindrop impaction.…”

Section: Introductionmentioning

confidence: 99%

Flexible Hybrid Nanogenerator for Self‐Powered Weather and Healthcare Monitoring Sensor

Lee

Kim

2021

Adv Elect Materials

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The reliability of energy supplies is required for sensing devices to collect data continuously in long-term monitoring. [7] Rechargeable batteries are unable to meet the sustainable energy demand due to their inherent defects of limited working time period. Furthermore, bulky and rigid power supply devices are inappropriate for portable and wearable electronics that require lightness and flexibility. [8] The self-powered sensors based on energy harvesting technology are an attractive alternative for powering these portable and wearable electronic devices. [9][10] The energy harvesting is the conversion of ambient energy into electrical energy. Due to the cost-effectiveness and high output characteristics, solar cells that convert solar energy into electricity have become the most widely used energy harvesting devices. However, on cloudy, rainy days, or at night, the supply of solar energy is severely reduced. Moreover, the contaminants on the surface of the solar cell can degrade the energy conversion efficiency of a solar cell. [11] To address these issues, solar cells can be integrated with other suitable energy harvesters to sustainably generate electricity under various environmental conditions.The mechanical energy from rain drops, wind flowing, or the human body can be great energy resources since these energies are eco-friendly and widely distributed in the living environment. The triboelectric nanogenerators (TENGs) and piezoelectric nanogenerators (PENGs) can harvest these energy resources. The TENGs are based on the coupling of contact electrification and electrostatic induction. [12][13] In earlier research, the water demonstrated to be one of the materials to generate triboelectricity and the contact-electrification on the solid/liquid interfaces was also studied. [14] On the other hand, the PENGs can generate electrical power under a tiny deformation. [15] The TENGs and PENGs are easy to be integrated with other energy harvesters and show the advantages of low cost and small volume. [9,15] Thus, many researchers have published papers about hybridization of the solar cells-TENGs or the solar cells-PENGs. [16][17][18][19][20][21][22][23][24] To sustainably generate energy from various energy sources, the solar cells were integrated with other types of energy harvesters, such as triboelectric wind energy harvesters or wearable triboelectric human-body energy harvesters. [25][26] Particularly, the tremendous efforts have been Nowadays, people can receive several types of information from portable and wearable devices. However, the limited working time period, rigid characteristic, and bulky size of the conventional power sources need to be improved for rocketing the compatibility with portable and wearable devices. In this paper, a flexible hybrid nanogenerator (FHNG) is presented by combining a solar cell, a transparent triboelectric nanogenerator (TENG), and a piezoelectric nanogenerator (PENG). The FHNG can sustainably collect energy from various energy sources. The FHNG can act as a self-powered wea...

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Cumulative charging behavior of water droplet driven freestanding triboelectric nanogenerators toward hydrodynamic energy harvesting

Abstract: A maximum power density of 1.838 W m−2 is achieved and 30 LEDs can be lighted up by the cumulative water droplets driven freestanding triboelectric nanogenerator demonstrating the great potential for hydrodynamic energy harvesting from rain.

Cited by 83 publications

References 36 publications

AFM Study of the Influence of Glycerol Flow on Horseradish Peroxidase near the in/out Linear Sections of a Coil

AFM Study of the Influence of Glycerol Flow on Horseradish Peroxidase near the in/out Linear Sections of a Coil

AFM and FTIR Investigation of the Effect of Water Flow on Horseradish Peroxidase

Flexible Hybrid Nanogenerator for Self‐Powered Weather and Healthcare Monitoring Sensor

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