scholarly journals Mode-coupling instability in a single-layer complex plasma crystal: Strong damping regime

2018 ◽  
Vol 25 (9) ◽  
pp. 093702 ◽  
Author(s):  
V. Nosenko ◽  
S. K. Zhdanov ◽  
J. Carmona-Reyes ◽  
T. W. Hyde
Keyword(s):  
Mode Coupling ◽  
Single Layer ◽  
Strong Damping ◽  
Complex Plasma ◽  
Plasma Crystal ◽  
Mode Coupling Instability

scholarly journals Tracking and Linking of Microparticle Trajectories During Mode-Coupling Induced Melting in a Two-Dimensional Complex Plasma Crystal

2019 ◽  
Vol 5 (3) ◽  
pp. 41
Author(s):  
Lénaïc Couëdel ◽  
Vladimir Nosenko
Keyword(s):  
Mode Coupling ◽  
Signal To Noise Ratio ◽  
Scattered Light ◽  
Three Dimensional ◽  
Light Sheet ◽  
Noise Removal ◽  
Two Dimensional ◽  
Complex Plasma ◽  
Plasma Crystal ◽  
Mode Coupling Instability

In this article, a strategy to track microparticles and link their trajectories adapted to the study of the melting of a quasi two-dimensional complex plasma crystal induced by the mode-coupling instability is presented. Because of the three-dimensional nature of the microparticle motions and the inhomogeneities of the illuminating laser light sheet, the scattered light intensity can change significantly between two frames, making the detection of the microparticles and the linking of their trajectories quite challenging. Thanks to a two-pass noise removal process based on Gaussian blurring of the original frames using two different kernel widths, the signal-to-noise ratio was increased to a level that allowed a better intensity thresholding of different regions of the images and, therefore, the tracking of the poorly illuminated microparticles. Then, by predicting the positions of the microparticles based on their previous positions, long particle trajectories could be reconstructed, allowing accurate measurement of the evolution of the microparticle energies and the evolution of the monolayer properties.

scholarly journals Dynamics of spinning particle pairs in a single-layer complex plasma crystal

2017 ◽  
Vol 96 (1) ◽  
Author(s):  
V. Nosenko ◽  
S. K. Zhdanov ◽  
H. M. Thomas ◽  
J. Carmona-Reyes ◽  
T. W. Hyde
Keyword(s):  
Single Layer ◽  
Spinning Particle ◽  
Complex Plasma ◽  
Particle Pairs ◽  
Plasma Crystal

Spontaneous formation and spin of particle pairs in a single-layer complex plasma crystal

2015 ◽  
Vol 112 (4) ◽  
pp. 45003 ◽  
Author(s):  
V. Nosenko ◽  
S. K. Zhdanov ◽  
H. M. Thomas ◽  
J. Carmona-Reyes ◽  
T. W. Hyde
Keyword(s):  
Single Layer ◽  
Complex Plasma ◽  
Spontaneous Formation ◽  
Particle Pairs ◽  
Plasma Crystal

Mode-Coupling Instability in a Fluid Two-Dimensional Complex Plasma

2014 ◽  
Vol 113 (13) ◽  
Author(s):  
A. V. Ivlev ◽  
S. K. Zhdanov ◽  
M. Lampe ◽  
G. E. Morfill
Keyword(s):  
Mode Coupling ◽  
Two Dimensional ◽  
Complex Plasma ◽  
Mode Coupling Instability

Mode Coupling-Type Instability of a Beam Subjected to Coulomb Friction

2013 ◽  
Vol 135 (6) ◽  
Author(s):  
Yasuhiro Seo ◽  
Hiroshi Yabuno ◽  
Go Kono
Keyword(s):  
Mode Coupling ◽  
Coulomb Friction ◽  
Axial Direction ◽  
Laser Printer ◽  
Beam Model ◽  
Excitation Mechanism ◽  
Cosserat Theory ◽  
Floor Surface ◽  
Excited Oscillation ◽  
Mode Coupling Instability

To analyze the excitation mechanism of self-excited oscillation in a beam that is in contact with a moving floor surface such as a cleaning blade, which is a beam mounted in a laser printer to clean the photoreceptor, we study a beam subjected to Coulomb friction and theoretically predict the occurrence of self-excited oscillation through mode-coupling instability. We present an extensible beam model, and derive its governing nonlinear equations by means of special Cosserat theory, which allows for the extensibility of the beam to be considered. The boundary conditions on the end of the beam are unique because the end of the beam makes contact with the moving floor surface. We used a discretized linearized governing equation and performed linear stability analysis. The results indicate that self-excited oscillation in the beam is produced due to both Coulomb friction and mode coupling of the bending and extension of the beam based on the extensibility in the axial direction.

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