Spatiotemporal corona discharge characteristics of nanoelectrode: array carbon nanotubes

Li, Dingchen; Li, Chuan; Li, Jiawei; Xiao, Menghan; Wang, Pengyu; Liu, Zhi; Zhang, Ming; Yang, Yong; Yu, Kexun

doi:10.1088/1361-6595/acf0e6

Cited by 3 publications

(2 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To test this speculation, a finite element model is adopted to solve the N−V equation and Poisson equation and obtain the electric field distribution and negative ion density of these two typical discharge points under corona discharge, 62 which is shown in Figure 9. The electric field in the vicinity of W nanoparticles (10 7 V/m) is 1 order of magnitude higher than that of bare needle tip (10 6 V/m).…”

Section: Needle Electrodementioning

confidence: 99%

Advanced Fog Harvesting Method by Coupling Plasma and Micro/Nano Materials

Li,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

Harvesting fog is a potential and effective way to alleviate the crisis of water resource shortage. A highly efficient and economical fog harvesting method has always been a global and common goal. Here, a promising fog harvesting method by coupling plasma and micro/nano materials is proposed, which can achieve 93% fog collection efficiency with consuming power of only 0.76 W/0.04 m 2 . The basic method is to utilize nanoparticles to decorate both the discharge electrode and the collecting electrode of the micro/nano electrostatic fog collector. For the discharge electrode, the nanoparticles can achieve an order of magnitude higher electric field strength and a 28.6% decrease in the operating voltage (14 kV decreases to 10 kV). For the collecting electrode, a novel composite structure of hydrophobic/hydrophilic (HB/HL) is proposed. The core advantage is the directional droplet transport at the junction of HB and HL caused by surface tension can adjust the accumulated droplets on the two sides, which avoids the droplet residue and mesh blockage in the general structure. This technology provides an innovative approach for the collection of microdroplets and a new design idea for the fog collector to deal with the water crisis.

show abstract

Section: Needle Electrodementioning

confidence: 99%

Advanced Fog Harvesting Method by Coupling Plasma and Micro/Nano Materials

Li,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

show abstract

“…Consequently, a change has been made from passive collision collection to active fog collection. Atmospheric pressure discharge can ionize air and produce a mass of ions, electrons [14], which has wide applications in artificial precipitation [15], soil remediation [16,17], fog harvesting [18, 19] and so on. Li et al [18] achieved a saturation collection rate of 613 g h −1 in a simulated fog of 750 g h −1 by applying different levels of voltage to each of five layers of collecting electrodes.…”

Section: Introductionmentioning

confidence: 99%

Enhancing fog collection by optimizing wettability combination and fork-row collector arrangement: light and heavy fog

Zhang,

Xiao,

et al. 2023

J. Phys. D: Appl. Phys.

Self Cite

View full text Add to dashboard Cite

Fog collection is essential to alleviate water scarcity in arid areas. However, the vast majority of existing fog collectors only work effectively in heavy fog. To broaden the fog concentration range for efficient work, an optimization strategy based on wettability combination and fork-row arrangement is proposed in this work. Single-layer experiment results show that a hydrophilic (HL) surface with high deposition capacity collects droplets at a faster rate in light fog (25–80 g h−1), while the collection rate of a hydrophobic (HB) surface with high drainage capacity is higher in heavy fog (220–500 g h−1). Double-layer experiment results show that in light fog, the best combination of double-layer collection electrodes is HL–HL, while HB–HL performs best in heavy fog. A 35% improvement in collection rate can be obtained simply by changing the arrangement from smooth-row (S) to fork-row (F), which is attributed to the increased effective collision area of droplets. In our series of experiments, at 50 g h−1, the collection rate of double-layer combination HL–HL(F) is 56.7% higher than that of single-layer HL. In particular, the collection rate of HB–HL(F) reaches 1434.7 mg cm−2 h−1 at 500 g h−1. Such a good performance is attributed to the force imbalance of hanging droplets caused by wettability differences, which tends to transport small droplets on HB towards HL directionally, resulting in a rapid droplet slippage. Therefore, the HB–HL accelerates drainage and refreshes capture points. Furthermore, fog collection performance is also influenced by layer spacing, which has an optimal distance. These findings provide a promising method for practical applications of fog collectors in a wide range of fog flow quantities, enhancing adaptability to variable environments.

show abstract

Controllable droplet velocity: Exploration of droplet transport based on discharge plasma

Li,

Liang

et al. 2024

Physics of Fluids

View full text Add to dashboard Cite

Droplet transport assumes a crucial role in domains such as atmospheric governance, water resource development, drug delivery, medical analysis and detection, as well as the development of biosensors. Currently, droplet transport is accomplished through established chemical environments and structural gradients, yet it fails to precisely control the motion state of droplets. This paper presents an innovative approach for transporting droplets by means of discharge plasma, which governs the start, stop, and velocity of the droplets by modulating the discharge power. We employ discharge plasma to charge and polarize droplets and form gradient electric fields and gradient charges in space for driving droplets. Eventually, we achieved directional transport of diverse droplets via this method, which holds significant potential application value for controlling droplet motion.

show abstract

Spatiotemporal corona discharge characteristics of nanoelectrode: array carbon nanotubes

Cited by 3 publications

References 38 publications

Advanced Fog Harvesting Method by Coupling Plasma and Micro/Nano Materials

Advanced Fog Harvesting Method by Coupling Plasma and Micro/Nano Materials

Enhancing fog collection by optimizing wettability combination and fork-row collector arrangement: light and heavy fog

Controllable droplet velocity: Exploration of droplet transport based on discharge plasma

Contact Info

Product

Resources

About