Motion of rotating pairs in a hexagonal superlattice pattern within dielectric barrier discharge

Dong, Lifang; Li, Ben; Shen, Zhongkai; Wang, Yongjie; Lü, Ning

doi:10.1103/physreve.86.036211

Cited by 14 publications

(8 citation statements)

References 25 publications

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“…Sometimes only a slight change in one controlling parameter may result in a significant change in the DBD patterns. In some cases, patterns can rotate [26,36,37], move [38,39], collide and scatter [40][41][42][43], form spiral and chaos [44], and some other collective effects [34,45], even if the discharge conditions are kept.…”

Section: Status Of Patterns In Dbdmentioning

confidence: 99%

“…The patterns in various states can self-organize into hexagons, squares, rings and stripes. Mixtures of simple structures of DBD can form some complex patterns like honeycomb, superlattice, etc[15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34]. Figures2 and 3show a collection of stable DBD patterns obtained by different research groups.…”

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confidence: 99%

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Nonlinear phenomena in dielectric barrier discharges: pattern, striation and chaos

Ouyang

2018

Plasma Sci. Technol.

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The nonlinear phenomenon is very popular in dielectric barrier discharge (DBD) plasmas. There are at least three kinds of spatial and temporal nonlinear phenomena appearing synchronously or asynchronously in DBDs, i.e. self-organized patterns, striations and chaos. This paper describes the recent research and progress in understanding the nature of these nonlinear phenomena. Patterns are macroscopic structures with certain spatial and/or temporal periodicities generated through selforganization of microscopic parameters. The physics of patterns in DBDs is mainly associated with lateral dynamic behaviors or the lateral non-local effect of charged particles resulting in the lateral development or non-uniformity of discharge. Striations are ionization waves with unique properties determined by transport phenomena, ionization processes and electron kinetics in current-carrying plasmas. The physics of striations in DBDs is mainly associated with the advances in non-local electron kinetics in spatially inhomogeneous plasmas. Chaos is a kind of random and non-periodic phenomenon occurring in a determined dynamic system, following a series of certain rules while exhibiting random locomotion, and is regarded as an intrinsic and ubiquitous phenomenon in a nonlinear dynamic system. An evolution trajectory including period-doubling bifurcation to chaos was observed in DBDs or DBD-derived plasmas. In a common sense, it is believed that the formation of all the three nonlinear phenomena in a DBD system should be related to the non-local transversal and/or longitudinal dynamics of space charges (i.e. non-local effect) or the localized electric field interaction. Future work is still needed on the underlying physics and should be directed to pursuing the unification of these nonlinear phenomena in DBD.

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Section: Status Of Patterns In Dbdmentioning

confidence: 99%

mentioning

confidence: 99%

Nonlinear phenomena in dielectric barrier discharges: pattern, striation and chaos

Ouyang

2018

Plasma Sci. Technol.

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“…It can be concluded that the moving mode of the moving filaments is antisymmetric stretching vibration, which is similar to the vibration mode of isolated particles in dust plasma. [24] It is worth pointing out that the antisymmetric stretching vibration of the vibrating filaments is a kind of collective vibration.…”

Section: Resultsmentioning

confidence: 99%

“…During recent years, more and more dynamic patterns have been discovered and studied. [23,24] Generally, the pattern consists of several sets of sublattices, and the latter sublattices are discharged at the center of the last sub-lattice. For instance, Cui et al observed a honeycomb pattern with moving filaments, and the central spots were discharged at the centers of the hexagons formed by the moving filaments.…”

Section: Introductionmentioning

confidence: 99%

Influence of vibration on spatiotemporal structure of the pattern in dielectric barrier discharge

Han¹,

Dong²,

Huang³

et al. 2019

Chinese Phys. B

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The influence of vibration on the spatiotemporal structure of the pattern in dielectric barrier discharge is studied for the first time. The spatiotemporal structure of the pattern investigated by an intensified charge-coupled device shows that it is an interleaving of three sublattices, whose discharge sequence is small rods–halos–large spots in each half-cycle of the applied voltage. The result of the photomultiplier indicates that the small rods are composed of moving filaments. The moving mode of the moving filaments is determined to be antisymmetric stretching vibration by analyzing a series of consecutive images taken by a high-speed video camera. The antisymmetric stretching vibration affects the distribution of wall charges and leads to the halos. Furthermore, large spots are discharged only at the centers of the squares consisting of vibrating filaments. The vibration mechanism of the vibrating filaments is dependent on the electric field of wall charges.

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“…Sometimes only a slight change in one controlling parameter may result in a significant change in the DBD patterns. In some cases, patterns can rotate [30,31], move [32], collide and scatter [33,34], form spirals and chaos [35], and some other collective effects [36], even if the discharge conditions are kept. All of these investigations promote a deep understanding of the mechanism of the DBD discharge.…”

Section: Introductionmentioning

confidence: 99%

Hysteresis characteristics of the initiating and extinguishing boundaries in a nanosecond pulsed DBD

Tang¹,

Tang²,

Zhou³

et al. 2019

Plasma Sci. Technol.

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The dielectric barrier discharge (DBD) is presently used in many fields, including plasma medicine, surface modification, and ozone synthesis; the influence of airflow on the DBD is a widely investigated topic. In this work, a hysteresis characteristic on the initiating and extinguishing boundaries is observed in a nanosecond pulsed DBD, which is sensitive to the variation in the airflow velocities and pulse repetition frequencies (PRFs). It is found that, at a certain airflow velocity, the initiating PRF is higher than the extinguishing PRF. This difference between the initiating PRF and the extinguishing PRF leads to a hysteresis phenomenon on the initiating and extinguishing boundaries. When the airflow velocity is increased, both the initiating and extinguishing PRFs are increased and the difference between the initiating PRF and the extinguishing PRF also increased. The hysteresis width between the initiating and extinguishing boundaries is enhanced. To explain these results, the physical processes involved with the seed particles and the mechanisms of forming discharge channels are discussed.

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Motion of rotating pairs in a hexagonal superlattice pattern within dielectric barrier discharge

Cited by 14 publications

References 25 publications

Nonlinear phenomena in dielectric barrier discharges: pattern, striation and chaos

Nonlinear phenomena in dielectric barrier discharges: pattern, striation and chaos

Influence of vibration on spatiotemporal structure of the pattern in dielectric barrier discharge

Hysteresis characteristics of the initiating and extinguishing boundaries in a nanosecond pulsed DBD

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