Complex (Dusty) Plasmas: Application in Material Processing and Tools for Plasma Diagnostics

Kersten, Holger; Wolter, Matthias

doi:10.1007/978-3-642-10592-0_16

Cited by 4 publications

(5 citation statements)

References 102 publications

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“…The exponential growing waves and modes in plasma removes the free energy from the system and permit the system to become unstable. The study of dusty plasma has gained interest in the last few decades due to its observations [1][2][3][4][5][6][7][8][9][10] and applications in the space and laboratory [1][2][3][4][5][6][7][8][9][10]. Many authors studied the linear and nonlinear electrostatic wave in the presence and absence of the external magnetic field [11][12][13].…”

Section: Current Status Of the Researchmentioning

confidence: 99%

“…Manmade plasmas are ordinary flames, dust in fusion devices, rocket exhaust, thermonuclear fusion, Hall thruster, atmospheric aerosols etc. [1][2][3][4][5][6][7]. The detail of existence of dusty plasma is given in Table 1.…”

Section: Introduction To Dusty Plasmamentioning

confidence: 99%

“…The dust particles experience different forces in plasma. The Gravitational force, drag force, electromagnetic forces, polarization force and radiation pressure [1][2][3][4][5][6][7][8].…”

Section: Introduction To Dusty Plasmamentioning

confidence: 99%

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Evolutions of Growing Waves in Complex Plasma Medium

Singh¹

2021

Computational Overview of Fluid Structure Interaction

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The purpose of this chapter to discuss the waves and turbulence (instabilities) supported by dusty plasma. Plasmas support many growing modes and instabilities. Wave phenomena are important in heating plasmas, instabilities, diagnostics, etc. Waves in dusty plasma are governed by the dynamics of electrons, ions and dust particles. Disturbances in solar wind, shocks and magnetospheres are the sources of generation of plasma waves. The strong interest in complex plasma provides us better understanding of physics of dusty universe, solar winds, shocks, magnetospheres, dust control in plasma processing units and surface modifications of materials. The theory of linearization of fluid equation for small oscillation has been introduced. The concept of fine particles in complex plasma and its importance is also explained. The expressions for the growth rate of the instabilities in turbulence plasma have been derived.

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Section: Current Status Of the Researchmentioning

confidence: 99%

Section: Introduction To Dusty Plasmamentioning

confidence: 99%

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Evolutions of Growing Waves in Complex Plasma Medium

Singh¹

2021

Computational Overview of Fluid Structure Interaction

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“…weakly ionized gas discharges are two-temperature systems that contain energetic electrons that are much hotter than the ions and background gas molecules, with energies typically on the order of k B T e ∼ 0.1−10 eV and k B T i ∼ 0.03−0.05 eV and gas pressures p g ∼ 10 2 −10 5 Pa. A key advantage of non-thermal dusty plasmas is their relatively low operating temperatures (< 500 K) combined with the presence of energetic electrons whose temperature is on the order of ∼ 10, 000 K, a combination that creates novel pathways for particle growth dynamics and surface chemistry [1][2][3], generally inaccessible via colloidal or aerosol routes. Flow-through non-thermal plasmas, distinct from stationary plasmas formed inside a sealed chamber and a stagnant gas, are effective vehicles for materials synthesis/processing [4,5] as they allow the chemical transformation and nucleation of precursor vapors, followed by grain growth via coagulation [6][7][8] to produce desired aerosol size distribution, shape, composition and crystalline phase in materials while being amenable to online, real-time optical diagnostics [9] and aerosol electrical mobility analysis [10][11][12][13]. While the nonthermal plasma itself is spatially well-defined by the creation of energetic species due to the influx of power through electrodes or irradiation, the produced species are not necessarily completely reacted away within the axial extent of the cylindrical flow reactor.…”

Section: Introductionmentioning

confidence: 99%

Modeling nanoparticle charge distribution in the afterglow of non-thermal plasmas and comparison with measurements

Suresh¹,

Li²,

Felipe³

et al. 2021

J. Phys. D: Appl. Phys.

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Particle charging in the afterglows of non-thermal plasmas typically take place in a non-neutral space charge environment. We model the same by incorporating particle–ion collision rate constant models, developed in prior work by analyzing particle–ion trajectories calculated using Langevin Dynamics (LD) simulations, into species transport equations for ions, electrons and charged particles in the afterglow. A scaling analysis of particle charging and additional LD calculations of the particle–ion collision rate constant are presented to extend the range of applicability to ion electrostatic to thermal energy ratios of 300 and diffusive Knudsen number (that scales inversely with gas pressure) up to 2000. The developed collision rate constant models are first validated by comparing predictions of particle charge against measured values in a stationary, non-thermal DC plasma from past PK-4 campaigns published in Ratynskaia et al (2004 Phys. Rev. Lett. 93 085001) and Khrapak et al (2005 Phys. Rev. E 72 016406). The comparisons reveal excellent agreement within ± 35 % for particles of radius 0.6 , 1.0 , 1.3 μ m in the gas pressure range of ∼ 20 − 150 Pa . The experiments to probe particle charge distributions by Sharma et al (2020 J. Physics D: Appl. Phys. 53 245204) are modeled using the validated particle–ion collision rate constant models and the calculated charge fractions are compared with measurements. The comparisons reveal that the ion/electron concentration and gas temperature in the afterglow critically influence the particle charge and the predictions are generally in qualitative agreement with the measurements. Along with critical assessment of the modeling assumptions, several recommendations are presented for future experimental design to probe charging in afterglows.

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“…Dusty plasmas are naturally found in astrophysical situations such as planetary rings, comet tails, and interplanetary and interstellar clouds [2][3][4][5][6]. These are also investigated in laboratories for materials processing, etching, fusion and other such experiments with plasma and dust [7,8]. To differentiate specially designed dusty plasmas, the term complex plasmas is used [1].…”

Section: Introductionmentioning

confidence: 99%

Spatial distribution of Dust Density Wave Properties in Fluid Complex Plasmas

Bajaj,

Khrapak,

Yaroshenko

et al. 2021

Preprint

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Complex plasmas consist of microparticles embedded in a low-temperature plasma and allow investigating various effects by tracing the motion of these microparticles. Dust density waves appear in complex plasmas as self-excited acoustic waves in the microparticle fluid at low neutral gas pressures. Here we show that various properties of these waves depend on the position of the microparticle cloud with respect to the plasma sheath and explain this finding in terms of the underlying ion-drift instability. These results may be helpful in better understanding the propagation of dust density waves in complex plasmas and beyond, for instance, in astrophysical dusty plasmas.

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Complex (Dusty) Plasmas: Application in Material Processing and Tools for Plasma Diagnostics

Cited by 4 publications

References 102 publications

Evolutions of Growing Waves in Complex Plasma Medium

Evolutions of Growing Waves in Complex Plasma Medium

Modeling nanoparticle charge distribution in the afterglow of non-thermal plasmas and comparison with measurements

Spatial distribution of Dust Density Wave Properties in Fluid Complex Plasmas

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