Discharge striations on a coplanar AC‐PDP

Cho, Guangsup; Choi, Eun‐Ha; Seo, Yoonho; Kim, Young-Guon; Joh, Dai-Geun; Ko, Jae Wook; Choonwoo, Lee; Kim, Daeil; Joo, Youngdae; Han, Jung-Gwan; Kim, Min‐Chul; Kim, June-Dong

doi:10.1889/1.1828751

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…The striations form above the data electrode (as temporary anode), with spacing of 0.34 ± 0.02 cm (image at 11.5 μs in figure 21). This is very similar to the striations observed above the anode in coplanar [82][83][84][85][86][87] or matrix PDPs [88]. The striations keep stationary even if the discharge turns on between the coplanar electrodes at ∼12.8 μs with the help of the data electrode (sustaining phase) and thereafter (see image at 13.3 μs).…”

Section: Status Of Striations In Dbdsupporting

confidence: 79%

“…Traditionally, the main classes of waves responsible for longitudinal instabilities of classical DC discharges are considered to be ion-acoustic and ionization waves in plasmas. The most recent review on striations in rare gas plasma can be found in [81] by Kolobov in 2006. Striations in DBD system were firstly observed in 1999 in PDP cells [82][83][84]. This striation generally appears above the anode surface of the PDP when the discharge plasma spreads over there.…”

Section: Striationsmentioning

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 Striations In Dbdsupporting

confidence: 79%

Section: Striationsmentioning

confidence: 99%

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

Ouyang

2018

Plasma Sci. Technol.

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Three-dimensional PIC/MC simulations of the sustain discharge pulse in an ACPDP

Khudik¹,

Nagorny²,

Shvydky³

2005

J. Soc. Inf. Display

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-The strong discharge pulse between coplanar electrodes in an ACPDP cell is investigated using fully kinetic 3-D simulations. Key phases in the discharge development are identified and thoroughly illustrated with an extensive set of plots. The main effort is focused on the study of the anode charging wave and striations formed above the dielectric surface in the anode area. To elucidate these physical phenomena, we perform a number of specially designed numerical experiments.Keywords -ACPDP, PIC/MC simulation, PDP discharge, striations, cathode fall. IntroductionNumerical simulations based on the hydrodynamic approximation proved to be a very useful tool for studying discharges in a plasma-display-panel (PDP) cell, and currently are widely used. [1][2][3][4] They have provided very valuable information about the time-spatial evolution of the discharge (such as distribution of the electric field, electrons, ions, and excited species in the cell), and allowed us to investigate the dependence of different discharge parameters on the dielectric properties of the walls, electrode structure, gas mixture, etc.; they also gave clues for the development of analytical theories. 5,6 The advantage of a numerical approach is that it allows one to "look" inside the discharge and find relationships between discharge characteristics, which are hard or impossible to extract from experimental data. Moreover, one can even deliberately change the value of any physical parameter in the simulation in order to uncover some "hidden" relationships. All of this helped to form basic concepts and to understand many features of the PDP discharge, and significantly improve its parameters. One should remember, though, that hydrodynamic approximation requires too many assumptions (which do not have a solid theoretical foundation) about the electron distribution function under the conditions of the PDP discharge. Indeed, while the electric field in the PDP cell varies very sharply in space and very fast in time, transport coefficients and rates of excitation and ionization processes used in fluid models were obtained for a uniform and stationary electric field (through independent kinetic zero-dimensional considerations!). So, at most, one should consider fluid simulations, although extremely useful, as giving a qualitative picture of the discharge, rather than quantitative. (Note that recent modifications of fluid codes 3,4,7 which include a separate equation for the electron energy are capable of capturing some non-local discharge features; however, whether or not they produce more accurate quantitative results is still an open question.)The strength of the kinetic approach is that it uses only fundamental data, such as cross-sections of different interactions between all kinds of particles, and probability distribution functions of various particle-wall interactions. The distribution of relevant particles is calculated self-consistently during discharge development at every point in time and space without any apriori assumptions. Th...

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Discharge striations on a coplanar AC‐PDP

Abstract: Observations suggest that the discharge striations in a coplanar AC-PDP are related to the ion wall-charge waves generated by the self-sustained perturbations during the force-balancing between the ion and the electron wall charge accumulated on the dielectric layer over the electrodes.

Cited by 2 publications

References 7 publications

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

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

Three-dimensional PIC/MC simulations of the sustain discharge pulse in an ACPDP

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