Energy harvesting based on acoustically oscillating liquid droplets

Lee, Young Rang; Shin, Jae Ho; Park, Il Song; Rhee, Kyehan; Chung, Sang Kug

doi:10.1016/j.sna.2015.03.009

Cited by 19 publications

(10 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…And the kinetic energy can occur in some vibrations to the surface and oscillation on a superhydrophobic surface through jumping which can be harvested for electricity generation. Several mechanisms have been reported for harvesting droplets’ energy aside from the conventional contact electrification between liquid/solid interaction such as from jumping droplets, [ 77–79 ] acoustic oscillating droplets, [ 80–82 ] and through piezoelectric electrification. [ 83–86 ] These mechanisms have inspired the research community to involve in generating electricity from raindrops and studying the underlying working principle of these droplet‐based energy harvesting devices.…”

Section: Various Structures Of Water Droplets‐based Nanogeneratorsmentioning

confidence: 99%

See 1 more Smart Citation

Water Droplet‐Based Nanogenerators

Hasan

Zhang

et al. 2022

Advanced Energy Materials

View full text Add to dashboard Cite

Water is one of the most sustainable resources in the world, offering an abundance of hydro energy. Getting a large amount of electricity through conventional water energy harvesting is expensive, with complex mechanisms and bulky installation systems. In the case of the small amount of energy for some portable electronic devices and sensor systems, water droplet harvesting as a sustainable energy resource has become a forward‐looking step to meet the future demand for green energy. The ultimate demand for green energy in the future requires all the possible sustainable energy sources surrounding human society. The emerging potential of water droplet‐driven energy‐harvesting nanogenerators can meet a significant portion of the green energy demand. In this review, the recent developments in droplets‐driven nanogenerators for effective energy scavenging is summarized. It also includes an extensive discussion about the device structures from the material selection and output performance aspects. This review also gives a brief discussion on the applications of droplet‐based nanogenerators and outlines the future possibilities via the current improvement in designs and fabrication strategies that have been introduced by the field.

show abstract

Section: Various Structures Of Water Droplets‐based Nanogeneratorsmentioning

confidence: 99%

Section: Various Structures Of Water Droplets‐based Nanogeneratorsmentioning

confidence: 99%

Water Droplet‐Based Nanogenerators

Hasan

Zhang

et al. 2022

Advanced Energy Materials

View full text Add to dashboard Cite

show abstract

“…In previous research, various micro energy harvesting technologies of producing electrical energy have been developed. Some of them use ambient acoustic noise harvested by an actuator using acoustically oscillating liquid droplets [3], sequential contact-electrification and electrostatic-induction processes [4]. Contact electrification, also called triboelectrification, is a well-known phenomenon that occurs when two materials come into contact, and has been shown in applications such as metal ion reduction [5][6][7], electrostatic charge plates [8,9], sensor chemicals [10], and laser printing.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Development of energy harvesting with water droplet continuous flow over nanohollow and nanostalagmite of taro leaf surface

Negara¹,

Hamidi²,

Widhiyanuriyawan³

et al. 2020

EEJET

View full text Add to dashboard Cite

Electrical energy is generated by harvesting the induced charge in metal electrodes and by connecting the surface of the taro leaf, coated with the electrodes underneath, to the bridge rectifier and capacitor. This discussion was supported by a Scanning Electron Microscope analysis on the surface of taro leaves. The electrical energy was measured using a bridge rectifier at various water droplet rate in contact with leaf, and at various slope of the taro leaves. The results showed that the slope of the leaf surface contact area with water droplets and taro leaf increases the generation of electric voltage. The greater the tilt angle of the taro leaf surface causing more electrons to jump out of orbit. The surface of taro leaves made by a cluster of nanostalagmites with other nanostalagmites separated by nanoscale hollows that tend to repel water droplets. The results from the repulsion of nanostalagmites at a very small radius of the nanostalagmite structure were very high surface tension or surface energy. The electron jump is mainly generated due to the high surface tension energy of the nanostalagmite structure that when it comes into contact with ionized H + and OHin the water droplet, it produces hydrogen (H 2). H 2 is trapped in the nanohollows between the nanostalagmites. Due to the dense morphology of nanostalagmite, H 2 will tend to be pushed upwards to force the water droplet. As a result, the surface tension will be higher and the surface will be more superhydropobic thereby increasing the electrical voltage. The morphology and the tilt angle have an important role in generating electrical energy. Thus, it is necessary to do further research on superhidrophobic characteristics as a solution in the future to overcome the problem of electrical energy

show abstract

“…It is worth noting that as the research on TENGs continues and rapidly expands, new, more economical and easy-to-process materials are being developed 229 as well as systems in which the energy of droplets (e.g., from rainfall) is harvested simultaneously with the energy of sunlight and wind. 230 As the last example in this section, we mention a system in which energy was harvested from a water droplet oscillating under the influence of an acoustic wave 231,232 (Fig. 37a and b).…”

Section: Electrical Power Generatorsmentioning

confidence: 99%

Tactic, reactive, and functional droplets outside of equilibrium

2016

View full text Add to dashboard Cite

Under non-equilibrium conditions, liquid droplets coupled to their environment by sustained flows of matter and/or energy can become "active" systems capable of various life-like functions. When "fueled" by even simple chemical reactions, such droplets can become tactic and can perform "intelligent" tasks such as maze solving. With more complex chemistries, droplets can support basic forms of metabolism, grow, self-replicate, and exhibit evolutionary changes akin to biological cells. There are also first exciting examples of active droplets connected into larger, tissue-like systems supporting droplet-to-droplet communication, and giving rise to collective material properties. As practical applications of droplets also begin to appear (e.g., in single-cell diagnostics, new methods of electricity generation, optofluidics, or sensors), it appears timely to review and systematize progress in this highly interdisciplinary area of chemical research, and also think about the avenues (and the roadblocks) for future work.

show abstract

Energy harvesting based on acoustically oscillating liquid droplets

Cited by 19 publications

References 28 publications

Water Droplet‐Based Nanogenerators

Water Droplet‐Based Nanogenerators

Development of energy harvesting with water droplet continuous flow over nanohollow and nanostalagmite of taro leaf surface

Tactic, reactive, and functional droplets outside of equilibrium

Contact Info

Product

Resources

About