Minority charge separation in falling particles with bipolar charge

Ali, Fateh; Ali, Muzammil; Ali, Raafay; Inculet, I.I.

doi:10.1016/s0304-3886(98)00044-8

Cited by 130 publications

(16 citation statements)

References 1 publication

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“…It has been shown by experiments using Mars dust analogous in Mars simulation wind tunnel that micro-sized dust can carry net charges of around 10 5 e. Therefore, this novel opposite polarity dustplasma model (our present work) is relevant (applicable) not only to Martian dust devils 62,63 but also to cometary tails, 64 Earths mesosphere, 27 and laboratory devices. [33][34][35][36] It can be expected that the basic features and the underlying physics of the DA SWs that have been presented in the present work should be verified by further laboratory experiments.…”

Section: -6supporting

confidence: 56%

“…[33][34][35][36] It is not possible to go to our model from the previous models. 39,46,52 But, it is very easy to return to the previous works from our work.…”

Section: -6mentioning

confidence: 99%

“…) and laboratory devices. [33][34][35][36] Mamun and Shukla 37 have considered a two-component dusty plasma system containing positively and negatively charged dust particles, and theoretically investigated the properties of linear/nonlinear electrostatic waves. Rahman et al 38 have generalized the model of Mamun and Shukla 37 by considering a four-component dusty plasma containing negatively and positively charged dust particles, ions, and electrons, and investigated the possibility of the formation of shock structures.…”

Section: Introductionmentioning

confidence: 99%

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Multi-dimensional instability of dust-acoustic solitary waves in a magnetized plasma with opposite polarity dust

2012

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Dust-acoustic (DA) solitary structures and their multi-dimensional instability in a magnetized dusty plasma (containing inertial negatively and positively charged dust particles, and Boltzmann electrons and ions) have been theoretically investigated by the reductive perturbation method, and the small-k perturbation expansion technique. It has been found that the basic features (polarity, speed, height, thickness, etc.) of such DA solitary structures, and their multi-dimensional instability criterion or growth rate are significantly modified by the presence of opposite polarity dust particles and external magnetic field. The implications of our results in space and laboratory dusty plasma systems have been briefly discussed.

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Section: -6supporting

confidence: 56%

“…[33][34][35][36] It is not possible to go to our model from the previous models. 39,46,52 But, it is very easy to return to the previous works from our work.…”

Section: -6mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Multi-dimensional instability of dust-acoustic solitary waves in a magnetized plasma with opposite polarity dust

2012

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“…[13][14][15] There are, however, well-documented cases in which charge transfer is in the opposite direction, for example with some glass beads 16 and polymers. 17,18 Less well known are the early experiments that show that rough glass surfaces become negatively charged when contacted with otherwise identical smooth glass surfaces. [19][20][21] Vladykina et al 22 tested a series of glass samples with different surface roughness against a series of dielectric solids.…”

Section: B Experimental Observationsmentioning

confidence: 99%

Tribo-electric charging of dielectric solids of identical composition

Angus

Greber

2018

Journal of Applied Physics

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Despite its long history and importance in many areas of science and technology, there is no agreement on the mechanisms responsible for tribo-electric charging, including especially the tribo-charging of chemically identical dielectric solids. Modeling of the excitation, diffusional transport, and de-excitation of electrons from hot spots shows that a difference in local surface roughness of otherwise identical solid dielectric objects leads to different transient excited electron concentrations during tribo-processes. The model predicts that excited electron concentrations are lower and concentration gradients higher in solids with rougher rather than smoother surfaces. Consequently, during contact, the flux of charge carriers (electrons or holes) from hot spots will be greater into the rougher solid than into the smoother solid. These predictions are in agreement with current and historical observations of tribo-electric charge transfer between solids of the same composition. This effect can take place in parallel with other processes and may also play a role in the charging of solids of different composition.

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“…The calibration was done by using frictionally charged polypropylene spheres (Redhill Precision, Czech Republic) with diameters of 2.000 mm, 4.000 mm, 6.000 mm, 8.000 mm, 10.000 mm and 12.000 mm (accuracy given by the manufacturer).…”

Section: Calibrating the Probementioning

confidence: 99%