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Hybrid simulation of a dc-enhanced radio-frequency capacitive discharge in hydrogen
2012
Journal of Physics D: Applied Physics
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When a negative dc voltage was applied to one of the electrodes of a continuous wave (cw) plasma, a 'beam' of secondary electrons was formed that struck the substrate counter-electrode at nearly normal ...
The calculated IEDs of H + 3 and H + 2 ions in a cw plasma without dc bias were found to be in good agreement with published experimental data. ...
Acknowledgments PD and DJE are grateful to the Department of Energy, Office of Fusion Energy Science, contract DE-SC0001939, the National Science Foundation grant CBET 0903426, and the Department of Energy ...
doi:10.1088/0022-3727/45/17/175204
fatcat:pf4gjpzeyrddldjnrert3dfj3y
Measurement of electron energy distribution in low-pressure RF discharges
1992
Plasma Sources Science & Technology
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The rationale and considerations in the probe system design, as well as many construction details of the probe system itself, are discussed. ...
Electron energy distribution functions (EEnFs) have been measured in low-pressure capacitive R F discharges over a wide range of well defined (geometrically and electrically) discharge conditions. ...
Following such an approach, a great number of experimental EEDF studies have been performed in different kinds of gas discharge plasmas over the last 30 years. ...
doi:10.1088/0963-0252/1/1/006
fatcat:t6ed4rj2zvenpldexn6nv7zn3a
Experimental study of nanoparticle formation dynamics in HMDSO-Ar asymmetric capacitively-coupled radiofrequency plasma with application to deposition of nanocomposite layers
2016
2016 IEEE Nanotechnology Materials and Devices Conference (NMDC)
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This work presents experimental study of nanoparticle formation dynamics in the plasma gas phase, along with the plasma parameters, linked to the composition of the synthesized nanoparticles before their ...
It is found that by controlling the plasma electron temperature and density one can finely tune the nanoparticle composition as a function of reactive gas mixture. ...
The bottom electrode and the walls were grounded. The axially-asymmetric design of that RF discharge produces axially-asymmetric plasma inducing a self-bias voltage (V dc ) on the powered electrode. ...
doi:10.1109/nmdc.2016.7777173
fatcat:lboyb5tfnbb7vgw3xbdv7r7qkm
Effect of a filamentary discharge on the particle trajectory in a plane-to-plane DBD precipitator
2011
Journal of Physics D: Applied Physics
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This is due to the fast precipitation of particles. During the positive half-cycle, the particles migrate mainly toward the grounded electrode due to their positive net charge. ...
The main objective is to analyze the effect of a filamentary discharge on the particle trajectory. ...
In general, the discharge electrodes of a single stage ESP are connected to a dc high voltage, whereas the collecting electrodes are grounded. ...
doi:10.1088/0022-3727/44/28/285204
fatcat:rvdek5u4rnesrnwdpqojjjjgae
Instability of Dust Particles in a Coulomb Crystal due to Delayed Charging
1999
Physical Review Letters
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It occurs near the plasma-sheath boundary of a dc plasma operated at a low plasma density and gas pressure. ...
The excitation of this spontaneous oscillation is attributed to the finite charging time of particles. ...
*Present address: Department of Physics and Astronomy, University of Iowa, Iowa City, IA 52242. ...
doi:10.1103/physrevlett.83.1970
fatcat:43dartfsrbaw3hmlyhz2ezct24
Evidence on the macroscopic length scale spin coherence for the edge currents in a narrow HgTe quantum well
2015
JETP Letters : Journal of Experimental And Theoretical Physics Letters
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This is a direct experimental evidence on the spin-coherent edge transport over the macroscopic distances. ...
We experimentally demonstrate that this transport is sensitive to the mutual orientation of the magnetization directions of two 200 μm-spaced ferromagnetic leads. ...
We also study electron transport across one particular F-2DEG junction (b): the corresponding ferromagnetic electrode is grounded (F1); a current is applied between it and one of the normal contacts; two ...
doi:10.1134/s0021364015120115
fatcat:3fstluqyvba57iqvbu24utcxiu
Influence of magnetic field strength on nanoparticle growth in a capacitively-coupled radio-frequency Ar/C2H2 discharge
2019
Plasma Research Express
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It is revealed that the strength of the magnetic field (up to 2.5 T) has a major impact on discharge parameters (such as the self-bias of the powered electrode) as well as on the growth and morphology ...
The influence of the strength of the magnetic field on dust particle growth dynamics is explored. The structure of the grown nanoparticles is studied ex situ. ...
This work is supported by funding from the US Dept. of Energy, Grant Number DE-SC0016330, and by the National Science Foundation, Grant Numbers PHY-1613087 and PHY-1126067. ...
doi:10.1088/2516-1067/ab045e
fatcat:quxqzduyzrgjbdakrfv2qpxaqy
Observation of spatio-temporal pattern in magnetised rf plasmas
[article]
2016
arXiv
pre-print
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The plasma is formed by applying a rf voltage in parallel plate electrodes in push-pull mode under the background of argon gas. ...
We address an experimental observation of pattern formation in a magnetised rf plasma. ...
Experiments have been done on an electronic system which is a dc driven planar semiconductor gas discharge (SGD) device in absence of magnetic fields. ...
arXiv:1604.05411v1
fatcat:upahbgtlgfgipakr3ykhkjii2u
Particle-in-cell simulations of hollow cathode enhanced capacitively coupled radio frequency discharges
2012
Physics of Plasmas
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Due to a capacitive voltage divider formed by the rf sheaths at each electrode, the area ratio of the powered and ground electrodes is observed to have a strong effect on the resulting discharge, and if ...
Optimization of gas utilization efficiency for short-pulsed electron cyclotron resonance ion source Rev. Sci. ...
In most experimental systems, the ground electrode area is typically much larger than the powered electrode area, since the reactor walls are usually grounded as well. ...
doi:10.1063/1.3685709
fatcat:itt4dq6z3zflbhdtuljpxwwizq
Study of Electric Field Distribution in GaAs Materials and Devices Using Electro-Optic Probing Technique
1989
Journal of the Electrochemical Society
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Redistribution subject to ECS terms of use (see 140.114.73.24 Downloaded on 2014-07-24 to IP ...
The change of deep level concentration near the GaAs substrate surface after thermal annealing is in turn detected. ...
The voltages of the ground planes and the central electrode are constant, therefore, the variation of the signal under the electrodes represents the change of potential on the back surface. ...
doi:10.1149/1.2096411
fatcat:742krpiaivbjvdkvfgpzqfjghi
Choosing electrodes for deep brain stimulation experiments–electrochemical considerations
2005
Journal of Neuroscience Methods
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Deep brain stimulation (DBS) is a therapy of movement disorders including Parkinson's disease (PD). ...
Aging was accompanied by metal corrosion and erosion of the plastic insulation. For both materials, the degradation rates depended on the current density at the electrode surfaces. ...
Acknowledgements This study has been supported by grants 01 ZZ 0108 of the Bundesministerium für Bildung und Forschung to U.G. and StSch 20020418A of the Bundesamt für Strahlenschutz to J.G. ...
doi:10.1016/j.jneumeth.2004.09.001
pmid:15698665
fatcat:6bcqagz3fjgfdiirsvu2m7lfre
Dynamic behaviors of dust particles in the plasma–sheath boundary
2001
Physics of Plasmas
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We understand reasonably well the destabilization of single particle, as well as T-DLW under our real experimental condition. ...
Experimental points were obtained by the observation of resonant excitation of vertical oscillation with a small external ac voltage on the biasing electrode. ...
doi:10.1063/1.1350967
fatcat:4nw7z26lr5d3vpz6r5srdiznli
Room temperature redox reaction by oxide ion migration at carbon/Gd-doped CeO2heterointerface probed by anin situhard x-ray photoemission and soft x-ray absorption spectroscopies
2013
Science and Technology of Advanced Materials
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the GDC film to the gas phase, as well as a vigorous precipitation of oxygen gas at the bottom electrode to lift off the GDC film. ...
These in situ spectroscopic observations describe well the electrochemical polarization behavior of a metal/GDC/metal capacitor-like two-electrode cell at room temperature. ...
Acknowledgments This study was financially supported by the Japan ...
doi:10.1088/1468-6996/14/4/045001
pmid:27877594
pmcid:PMC5090320
fatcat:numemmtsvfcrrpj7pf3zohp2em
Water Electrolysis with Inductive Voltage Pulses
[chapter]
2012
Electrolysis
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Authors thank Professor Robert Salem for helpful guidance and advices, and deep compassion to his family on the death of Professor in 2009. ...
Financial support from the European Social Fund project "Support for doctoral studies at the University of Latvia" is acknowledged by M.Vanags. ...
generator noticed a gas evolution on the electrodes of water electrolysis cell as a result of spark over jumping in the electrostatic generator. ...
doi:10.5772/52453
fatcat:nrk3guhmhbbjjnrjp7umdbzl7m
The origin of large amplitude oscillations of dust particles in a plasma sheath
[article]
2020
arXiv
pre-print
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Using an integrated experimental and numerical approach, we show how the motion of an individual particle can be used to extract the electrostatic force and equilibrium charge variation in the plasma sheath ...
In systems of many particles, these oscillations can catalyze a variety of nonequilibrium, collective behaviors. ...
(b) Narrow band spectrogram the bias voltage φ dc on the electrode with the plasma on (red) and off (blue) at frequencies near characteristic frequencies of particle oscillation (Sec. ...
arXiv:1908.03138v3
fatcat:vxle5zuf2vctvm73hicjkrpbku
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