Carousel Instability in a Capacitively Coupled RF Dusty Plasma

Mikikian, Maxime; Couëdel, Lénaïc; Tessier, Yves; Boufendi, Laïfa

doi:10.1109/tps.2011.2155675

Cited by 17 publications

(23 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Given their characteristic motion these instabilities were called carousel instabilities. 28,29 The same mechanism can be suggested for our experiment. As the feeding of the reactive gas is stopped, only sputtering of organosilicon material from the powered electrode takes place to provide dust precursors and induce carousel instabilities.…”

Section: Role Of Atomic Hydrogen In the Formation/disappearance Dusupporting

confidence: 71%

Influence of the temporal variations of plasma composition on the cyclic formation of dust in hexamethyldisiloxane-argon radiofrequency discharges: Analysis by time-resolved mass spectrometry

Despax

Caquineau

2016

AIP Advances

View full text Add to dashboard Cite

Cyclic formation of dust nanoparticles in hexamethyldisiloxane (HMDSO, Si2O(CH3)6)-argon RF discharge with pulsed injection of HMDSO was studied using time-resolved mass spectrometry (MS) and optical emission spectroscopy (OES). A large amount of C2H2, considered as promoter of dust nucleation in hydrocarbon plasmas, was found as a by-product of HMDSO fragmentation. Although no negative ions were detected the presence of C2H2 in the HMDSO-Ar discharge supports the hypothesis of a dust growth mechanism based on negative ions being trapped in the plasma. It was found that at the beginning of each cycle of dust formation during α–γ′ transition, the discharge sustaining process is accompanied by a strong consumption of the HMDSO main by-products: HMDSO-15, CH4 and C2H2. At the end of the cycle, corresponding to the progressive disappearance of dust, the discharge switches back to its initial conditions. The beginning of the inverse transition, i.e. γ′–α, is most likely correlated to the growing void in the dust cloud and dust disappearance. In presence of dust nanoparticles, Ar+ and ArH+ dominate the ion population and consequently the discharge maintenance. When the dust particles gradually disappear, the discharge is rather controlled by Si2O(CH3)5+ ions. Moreover, the increased amount of such heavy ions reveals clearly their important income in the dust repelling process due to the drag force on the large sized dust even at short time scale during the injection time of HMDSO. Atomic-H production increases during the transition from dusty plasma to HMDSO-rich plasma with no dust and its role is associated to a delay in the dust nucleation stage.

show abstract

Section: Role Of Atomic Hydrogen In the Formation/disappearance Dusupporting

confidence: 71%

Influence of the temporal variations of plasma composition on the cyclic formation of dust in hexamethyldisiloxane-argon radiofrequency discharges: Analysis by time-resolved mass spectrometry

Despax

Caquineau

2016

AIP Advances

View full text Add to dashboard Cite

show abstract

“…In several dusty plasma experiments, rotating instabilities have been observed, consisting in the rotation of well-defined plasma regions like rotating voids [5,6] or plasmoids [7][8][9][10]. As in some electronegative plasma experiments [11], the rotation of the nearly entire plasma can also be observed in this soot experiment as shown in Fig.…”

Section: Rotating Plasma Instabilitiessupporting

confidence: 64%

Nanoparticle growth in ethanol based plasmas

Labidi¹,

Lecas²,

Kovačević³

et al. 2018

AIP Conference Proceedings

View full text Add to dashboard Cite

“…These regions are characterized by a slightly enhanced luminosity and seem to appear and disappear in a quite chaotic way. In some conditions, they can rotate regularly along the circumference of the electrodes as recently observed [23]. In the following, we focus more precisely on the chaotic phase related to their appearance.…”

Section: Introductionmentioning

confidence: 64%

Plasma inhomogeneities near the electrodes of a capacitively-coupled radio-frequency discharge containing dust particles

Tawidian

Mikikian

Couëdel

et al. 2011

Eur. Phys. J. Appl. Phys.

View full text Add to dashboard Cite

To cite this version:Hagop Tawidian, Maxime Mikikian, Lénaïc Couëdel, Thomas Lecas. Plasma inhomogeneities near the electrodes of a capacitively-coupled radio-frequency discharge containing dust particles. European Physical Journal: Applied Physics, EDP Sciences, 2011, 56, pp.24018. 10 Abstract. Small plasma spheroids are evidenced and analyzed in front of the electrodes of a capacitivelycoupled radio-frequency discharge in which dust particles are growing. These regions are characterized by a spherical shape, a slightly enhanced luminosity and are related to instabilities induced by the presence of dust particles. Several types of behaviors are identified and particularly their chaotic appearance or disappearance and their rotational motion along the electrode periphery. Correlations with the unstable behavior of the global plasma glow are performed. These analyses are obtained thanks to high-speed imaging which is the only diagnostics able to evidence these plasma spheroids.

show abstract

Carousel Instability in a Capacitively Coupled RF Dusty Plasma

Cited by 17 publications

References 11 publications

Influence of the temporal variations of plasma composition on the cyclic formation of dust in hexamethyldisiloxane-argon radiofrequency discharges: Analysis by time-resolved mass spectrometry

Influence of the temporal variations of plasma composition on the cyclic formation of dust in hexamethyldisiloxane-argon radiofrequency discharges: Analysis by time-resolved mass spectrometry

Nanoparticle growth in ethanol based plasmas

Plasma inhomogeneities near the electrodes of a capacitively-coupled radio-frequency discharge containing dust particles

Contact Info

Product

Resources

About