Self-Organized Anode Pattern on Surface of Liquid or Metal Anode in Atmospheric DC Glow Discharges

Shirai, Naoki; Uchida, Satoshi; Tochikubo, Fumiyoshi; Ishii, Shozo

doi:10.1109/tps.2011.2158324

Cited by 55 publications

(50 citation statements)

References 7 publications

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“…• CBLD in noble gas on the cathode [20][21][22][23][24] • DBD with a semiconductor electrode 25 • Glow discharge at at 1 atm on the anode 26,27 and low pressure [28][29][30][31][32] • Pin liquid electrode discharge in the air with auxiliary gas [33][34][35] and without [36][37][38] .…”

Section: DCmentioning

confidence: 99%

Self-organized patterns by a DC pin liquid anode discharge in ambient air: Effect of liquid types on formation

Zhang

Dufour

2018

Physics of Plasmas

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A pin liquid anode DC discharge is generated in open air without any additional gas feeding to form self-organized patterns (SOPs) on various liquid interfaces. Axially resolved emission spectra of the whole discharge reveal that the selforganized patterns are formed below a dark region and are visible mainly due to the N2 (C 3 -B 3 ) transitions. The high energy N2 (C) level is mainly excited by the impact of electrons heated by the local increased electric field at the interface. For the first time, the effect of the liquid type on the SOP formation is presented. With almost the same other discharge conditions, the formed SOPs are significantly different from HCl and H2SO4 liquid anodes. The SOP difference is repeated when the discharge current and gap distance change for both liquid anodes. The variations of SOP size and discretization as a function of discharge current and gap distance are discussed and confirm that different SOPs are formed by the HCl liquid anode from tap water or the H2SO4 liquid anode. A possible explanation is brought up to explain the dependence of SOPs on the liquid type. Effect of liquid types on formation, S. Zhang, T. Dufour, Physics of Plasmas 25, 073502 (2018) Self-organized patterns by a DC pin liquid anode discharge in ambient air: Effect of liquid types on formation, S. Zhang, T. Dufour, Physics of Plasmas 25, 073502 (2018) Self-organized patterns by a DC pin liquid anode discharge in ambient air:

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Section: DCmentioning

confidence: 99%

Self-organized patterns by a DC pin liquid anode discharge in ambient air: Effect of liquid types on formation

Zhang

Dufour

2018

Physics of Plasmas

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“…Among them, various types of plasmas are used for these purposes, which include pulsed streamer discharges in water [1,4,5], dielectric barrier discharges [6][7][8], atmospheric dc glow discharges [9,10], low-pressure dc glow discharges [11,12], RF (13.56 MHz) discharges [13], arc discharges [14], and microwave discharges [15]. In our previous work, we have successfully obtained glow discharges in aqueous solution, which have been named as "solution plasmas", and applied this technique to nanoparticles synthesis and modification of the surface of nano-materials [16,17].…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Electric Field in Gas Bubbles Surrounded with Conductive Liquid and Dielectric Material

Shirafuji

Nakamura

2013

Trans. Mat. Res. Soc. Japan

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We propose a structure of integrated micro solution plasmas, in which a number of microplasmas can be generated in a liquid medium, and we can expect efficient plasma-liquid interaction. It consists of a non-isolated porous dielectric material filled with a gas-liquid mixed medium. Since the bubbles in this structure are surrounded with conductive liquid, electrical discharges in the bubbles are not expected if we use liquid with infinite electrical conductivity. However, numerical simulation has revealed that the electric field in the bubbles can be high enough to ignite atmospheric pressure discharge in it if the liquid has finite electrical conductivity, for example 200 uS/cm for typical tap water, and that the concept of the integrated micro solution plasmas is feasible one.

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“…At least as rich a variety of patterns are observed in plasmas in contact with liquids, as depicted in figures 2(e) and (f). The patterns in figure 2(e) correspond to an atmosphericpressure glow discharge in He over a NaCl solution anode for increasing values of current [33], whereas figure 2(d) shows anode patterns in an atmospheric-pressure air glow discharges with a water anode for increasing values of water electrical conductivity [34]. The increasing number of controlling parameters for a liquid electrode (e.g.…”

Section: Pattern Formation and Self-organization In Plasmas 221 Plmentioning

confidence: 99%

“…Pattern formation and self-organization is also often found in plasmas interacting with liquid surfaces, of relevance in applications ranging from water decontamination and activation [35,36], to nanoparticle and material synthesis [37][38][39][40][41], and medicine [42,43]. These discharges have shown a high propensity for pattern formation, which has been observed when the liquid acts as a cathode or as an anode; for low-and high-pressure plasmas of inert and molecular gases; and for diverse liquid electrodes [33,34,44]. Therefore, pattern formation and self-organization in plasmas interacting with surfaces is of interest not only from a fundamental point of view, as intrinsic and fascinating characteristics of nature, but also from practical standpoint in current and emerging technological applications.…”

Section: Pattern Formation and Self-organization In Plasmas 221 Plmentioning

confidence: 99%

Pattern formation and self-organization in plasmas interacting with surfaces

Trelles¹

2016

J. Phys. D: Appl. Phys.

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Pattern formation and self-organization are fascinating phenomena commonly observed in diverse types of biological, chemical and physical systems, including plasmas. These phenomena are often responsible for the occurrence of coherent structures found in nature, such as recirculation cells and spot arrangements; and their understanding and control can have important implications in technology, e.g. from determining the uniformity of plasma surface treatments to electrode erosion rates. This review comprises theoretical, computational and experimental investigations of the formation of spatiotemporal patterns that result from self-organization events due to the interaction of low-temperature plasmas in contact with confining or intervening surfaces, particularly electrodes. The basic definitions associated to pattern formation and self-organization are provided, as well as some of the characteristics of these phenomena within natural and technological contexts, especially those specific to plasmas. Phenomenological aspects of pattern formation include the competition between production/forcing and dissipation/transport processes, as well as nonequilibrium, stability, bifurcation and nonlinear interactions. The mathematical modeling of pattern formation in plasmas has encompassed from theoretical approaches and canonical models, such as reaction-diffusion systems, to drift-diffusion and nonequilibrium fluid flow models. The computational simulation of pattern formation phenomena imposes distinct challenges to numerical methods, such as high sensitivity to numerical approximations and the occurrence of multiple solutions. Representative experimental and numerical investigations of pattern formation and self-organization in diverse types of low-temperature electrical discharges (low and high pressure glow, dielectric barrier and arc discharges, etc) in contact with solid and liquid electrodes are reviewed. Notably, plasmas in contact with liquids, found in diverse emerging applications ranging from nanomaterial synthesis to medicine, show marked sensitivity to pattern formation and a broadened range of controlling parameters. The results related to the characteristics of the patterns, such as their geometric configuration and static or dynamic nature; as well as their controlling factors, including gas composition, driving voltage and current, electrode cooling, and imposed gas flow, are summarized and discussed. The article finalizes with an outlook of the research area, including theoretical, computational, and experimental needs to advance the field.

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Self-Organized Anode Pattern on Surface of Liquid or Metal Anode in Atmospheric DC Glow Discharges

Cited by 55 publications

References 7 publications

Self-organized patterns by a DC pin liquid anode discharge in ambient air: Effect of liquid types on formation

Self-organized patterns by a DC pin liquid anode discharge in ambient air: Effect of liquid types on formation

Numerical Investigation of Electric Field in Gas Bubbles Surrounded with Conductive Liquid and Dielectric Material

Pattern formation and self-organization in plasmas interacting with surfaces

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