Plasma bubble domains: A magnetic bubble analog

Abstract

Results are presented on the discovery of plasma bubble domains (PBD’s), which occur as regular patterns of localized glow discharges formed under ac excitation in an atmospheric pressure inert gas based mixture confined between large-area, closely spaced, plane-parallel, dielectric-covered electrodes. These plasma bubble domains have many characteristics analogous to those of magnetic bubble domains (MBD’s): (1) Changing the applied field changes the size and the shape of the domain that forms (bubble, stripe, etc.). (2) There is a range of applied fields over which a bubble domain exhibits a corresponding range of stable diameters. (3) Bubble domains are bistable. Whereas MBD’s are used in computer memory devices, PBD’s are most likely to be used in computer display devices. ials; electrodes; surface coatings; electric fields; configuration;

Optimizing Factors on High Concentration of Ozone Production with Dielectric Barrier Discharge

“…With extension to the whole discharge area of the reactor, due to this residual electric field on the dielectric surface, the filament distribution has a unique pattern. This is called DBD filament self-organization (Boyers and Tiller 1982;Dong et al 2001;Guikema et al 2000;Shirafuji et al 2003;Yao et al 2009). The distance between the filaments is influenced by the size of the filament, which can be controlled by the discharge parameters, such as gas pressure, gap distance, and applied voltage.…”

“…We have tried using titanium, brass, and stainless steel as metal electrode exposed to the discharge volume and alumina (Al 2 O 3 ) and glass as dielectric electrode for the test. It is well known that the DBD plasma is composed of a number of filament discharge channels (Boyers and Tiller 1982;Dong et al 2001;Guikema et al 2000;Shirafuji et al 2003;Yao et al 2009). The diameter of a filament is about 200 µm in atmospheric pressure condition.…”

“…(Boyers and Tiller 1982;Dong et al 2001;Guikema et al 2000;Shirafuji et al 2003;Yao et al 2009). In the plasma channel, molecular oxygen is converted to two oxygen atoms by collisional dissociation.…”

Observation of self-organized square lattice pattern formation in surface barrier discharge plasma

“…Such DBD plasma is found to be an ideal device to study various linear and non-linear patterns. Earlier with parallel-plate electrode configuration, phenomenon like plasma bubble [3], discharge pattern [4,5], spatio-temporal dynamics of discharge domains [6,7], hexagonal discharge patterns [8e10], square pattern [11], selforganization of plasma spots [12e14], current spots [15,16], collective motion of spots [17], breathing filaments and dumbbell shaped filaments [18] etc have been studied. Most of the DBD patterns have been explained with an activator-inhibitor model [19,20].…”

Gap-dependent transitions of atmospheric microplasma in open air

“…[1][2][3][4][5][6][7][8][9][10][11][12] They are operated under different geometries of the electrodes, dielectric layer material, relative electrode distance, working ambient gas, pressure, temperature, driving voltage, waveform, and frequency. [10][11][12] For example, microplasmas have been observed in filamentary discharge [3][4][5]8,9 and uniform diffuse discharge.…”