Showing papers in "Journal of Electrostatics in 2011"

TL;DR: In this paper, a new procedure for determining the characteristic capacitance of DBD plasma actuators during operation is introduced, based on time-resolved discharge cyclograms, and the actuator performance is described extensively and the interaction of several key quantities is elucidated.

TL;DR: In this article, a new method is proposed based on modified thermally stimulated current theory and numerical calculation of the TSC measurement to investigate the trap level distribution in polymer films, a new function is defined to weight the contribution of every trap level to the external current The demarcation energy is used to study the trap emptying process.

TL;DR: In this paper, a method of removing lunar dust using electrostatic traveling-waves generated by four-phase rectangular voltage applied to a transparent conveyer consisting of parallel ITO (indium tin oxide) electrodes printed on a glass substrate is presented.

TL;DR: In this paper, potential decay on corona-charged low-density polyethylene (LDPE) was recorded using a macroscopic scanning electrode and also Kelvin force microscopy.

TL;DR: In this paper, the capacitance coefficients Caa, Cbb and Cab of two conducting spheres of radii a and b, for any distance c between the sphere centres, were obtained.

TL;DR: In this article, a theoretical analysis of the relationship between the electric discharge and the hydromechanical parameters is presented, based on the macroscopic RC-circuit modeling of the understudy, techniques allowing to minimize the discharge effect are introduced.

TL;DR: In this paper, a physical interpretation for the varying luminosity of the leader channel during its initial ascent and the pulsing luminosity during much later stages of the established leader was provided.

TL;DR: In this article, an EHD gas pump with three configurations (4, 12, and 28 emitting electrodes) was evaluated by experimental measurements and numerical simulations, and the relation between the number of emitting electrodes and pump performance was investigated.

TL;DR: In this article, the authors explored the process of jet formation in electrocentrifugal spinning and compared it to the same process in electrospinning and centrifuge spinning, and showed that the incorporation of the electrical and the centrifugal forces in the electrocentral forces leads to the formation of a more stable jet at lower viscosities.

TL;DR: In this article, a co-axial propeller entrained the plastic granules into a helical motion that favored their triboelectric charging by combining the mechanical and aerodynamic effects.

TL;DR: In this article, the degradation of the pharmaceuticals carbamazepine, clofibric acid, and iopromide in aqueous and landfill leachate containing solutions by corona discharge over a liquid surface was investigated.

TL;DR: In this article, the authors compared three types of DBD ReF in terms of specific energy density (SED), equivalent capacitances of the gap (Cg) and the dielectric barrier (Cd), energy yield (EY), and H 2 S decomposition.

TL;DR: In this paper, the authors examined flow and pressure generation of two conduction micro-pumps embedded within rectangular meso-and micro-channels, and showed that conduction pumps are well suited for pressure generation in micro-scale fluid and heat transfer devices.

TL;DR: In this paper, the static efficiency of ionic AMDs was evaluated similar to rotary AMDs for positive and negative coronas, by controlling emitter to collector distance and collector length.

TL;DR: In this paper, a three-dimensional numerical model has been created to evaluate the electrical and electrohydrodynamic characteristics of a single spiked wire-plate electrostatic precipitator, where the hybrid Finite Element- Flux Corrected Transport numerical technique is used for solving the Poisson and current continuity equations to estimate the electric potential and ion charge density distributions in the precipitation channel.

TL;DR: In this paper, the authors identify the nature of the propulsive force that occurs during a positive corona discharge in nitrogen gas using an asymmetric capacitor geometry and apply the known theory of electrohydrodynamics and electrostatics in order to compute all hydrodynamic and electrostatic forces that act on the considered geometry.

TL;DR: In this paper, the authors developed an experimental methodology that asymmetrically rubbed two surfaces by contacting a rotating cylinder with a stationary cylinder, and they found that the charge transfer occurs with a spatial distribution of charge in terms of magnitude and polarity on the contacted area.

TL;DR: In this article, a pneumatic test was used to characterise the triboelectrification of fine powders, and the results showed that solids loadings higher than 1 (kg of solids/kg of air) are not proper to achieve reliable measurements, and that the time evolutions of the electrostatic charge and the mass of the powder follow similar trends so that the tribocharging becomes independent of the solids mass flowrate.

TL;DR: In this article, a theoretical relationship for the currentvoltage discharge in a wire-to-plane configuration was derived to obtain the dependence on the geometric parameters, and it compared well with the experimental results.

TL;DR: In this paper, surface potential decay measurements on films were investigated over the different negative corona-charged voltages and times in a controlled environment where temperature and relative humidity were kept at 21 oC and 45%, respectively.

TL;DR: In this article, a single-phase voltage was applied to parallel electrodes printed on a flexible substrate to remove the dust from the surface of a slightly inclined device in a vacuum, and the cleaning performance was further improved in the low-gravity environment of the Moon.

TL;DR: In this article, an external electric field applied to two uncharged conducting spheres in close approach is amplified by charge separation on the spheres, and the enhancement increases without limit as the separation between the spheres decreases.

TL;DR: In this paper, a triangular array of nozzles in a multi-nozzle electrohydrodynamic (EHD) inkjet printing head was analyzed and compared with the linear array multi-Nozzle EHD printing head.

TL;DR: In this article, the average charge to mass ratio and the distribution of the charge-to-mass ratio in the coating of a flat target were systematically varied to demonstrate their effect on the motion of the charged particles.

TL;DR: In this article, a finite-element Arbitrary Lagrangian-Eulerian (FE-ALE) approach is proposed to investigate the time-dependent deformation of the interface between highly conductive water and an insulating immiscible fluid.

TL;DR: In this article, the authors calculate the levitation force due to ion wind and present experimental results which confirm the theoretical results, which is called the Brown-Biefeld effect (BB).

TL;DR: In this article, the decomposition of trifluro-iodo-methane and their relative proportions in the gas phase under the occurrence of partial discharge were presented.

TL;DR: In this article, the authors evaluated the neutralization efficiency of polyethylene granules exposed to an AC corona discharge from a wire-type electrode, and showed that the performance of the applied high voltage can be improved by increasing the frequency of the high voltage as well as correlating its amplitude with the inter-electrode spacing.

TL;DR: In this paper, the effective factors in determination of flow direction have been classified and investigated comprehensively, and saliency of these factors on hydrodynamic behavior using various electrodes configurations and different fluids has been studied.

TL;DR: In this paper, an atmospheric pressure nitrogen-plasma jet generated from microdischarges in a porous dielectric was generated by feeding nitrogen gas through a porous alumina installed between an outer electrode and a hollow inner electrode and by applying 60 Hz sinusoidal voltage wave to the electrodes.