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 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

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

scholarly journals Full melting of a two-dimensional complex plasma crystal triggered by localized pulsed laser heating

2018 ◽  
Vol 97 (4) ◽  
Author(s):  
L. Couëdel ◽  
V. Nosenko ◽  
M. Rubin-Zuzic ◽  
S. Zhdanov ◽  
Y. Elskens ◽  
...  
Keyword(s):  
Laser Heating ◽  
Pulsed Laser ◽  
Two Dimensional ◽  
Complex Plasma ◽  
Plasma Crystal ◽  
Pulsed Laser Heating

Mode-coupling instability of two-dimensional plasma crystals

2009 ◽  
Vol 16 (8) ◽  
pp. 083706 ◽  
Author(s):  
S. K. Zhdanov ◽  
A. V. Ivlev ◽  
G. E. Morfill
Keyword(s):  
Mode Coupling ◽  
Two Dimensional ◽  
Plasma Crystals ◽  
Mode Coupling Instability

scholarly journals Three-Dimensional Microwave Holographic Imaging Employing Forward-Scattered Waves Only

2013 ◽  
Vol 2013 ◽  
pp. 1-15 ◽  
Author(s):  
Reza K. Amineh ◽  
Maryam Ravan ◽  
Justin McCombe ◽  
Natalia K. Nikolova
Keyword(s):  
Signal To Noise Ratio ◽  
Three Dimensional ◽  
Imaging Method ◽  
Two Dimensional ◽  
Signal To Noise ◽  
High Loss ◽  
Holographic Imaging ◽  
Multiple Receivers ◽  
Satisfactory Performance ◽  
Resolution Limits

We propose a three-dimensional microwave holographic imaging method based on the forward-scattered waves only. In the proposed method, one transmitter and multiple receivers perform together a two-dimensional scan on two planar apertures on opposite sides of the inspected domain. The ability to achieve three-dimensional imaging without back-scattered waves enables the imaging of high-loss objects, for example, tissues, where the back-scattered waves may not be available due to low signal-to-noise ratio or nonreciprocal measurement setup. The simulation and experimental results demonstrate the satisfactory performance of the proposed method in providing three-dimensional images. Resolution limits are derived and confirmed with simulation examples.

scholarly journals A Review on Dual-Lens Fluorescence Microscopy for Three-Dimensional Imaging

2020 ◽  
Vol 8 ◽  
Author(s):  
Xiaoyan Li ◽  
Yubing Han ◽  
Wenjie Liu ◽  
Cuifang Kuang ◽  
Xu Liu ◽  
...  
Keyword(s):  
Fluorescence Microscopy ◽  
3D Imaging ◽  
Signal To Noise Ratio ◽  
Three Dimensional ◽  
Super Resolution ◽  
Light Sheet ◽  
Animal Cells ◽  
3D Images ◽  
Single Lens ◽  
Model Animal

Three-dimensional (3D) imaging using dual-lens fluorescence microscopies is popular in observing fluorescently labeled biological samples, such as mammalian/model animal cells, tissues, and embryos. Specifically, dual-lens super-resolution fluorescence microscopy methods using two opposing objective lenses allow significantly higher axial resolution and better signal to noise ratio than traditional single-lens counterparts, and thus distinguish more details in 3D images of fine intracellular structures. For 3D imaging of thick tissues and entire embryos, dual-lens light-sheet fluorescence microscopy methods using two objective lenses, either orthogonal or non-orthogonal, to achieve selective plane illumination, can meet the requirements, and thus can be used to observe embryo development and structures of interest in thick tissues. This review summarizes both dual-lens fluorescence microscopy methods, including their principles, configurations, and 3D imaging applications, providing a guideline for biological laboratories with different 3D imaging needs.

THREE-DIMENSIONAL DATA COLLECTION AND PROCESSING

1978 ◽  
Vol 18 (1) ◽  
pp. 116
Author(s):  
E. G. Selby
Keyword(s):  
Data Collection ◽  
Seismic Data ◽  
Signal To Noise Ratio ◽  
Three Dimensional ◽  
Depth Map ◽  
Seismic Survey ◽  
Seismic Exploration ◽  
Two Dimensional ◽  
Additional Advantage ◽  
Information Giving

There are many limitations in the ultimate accuracy of a conventional two dimensional seismic survey. One of the most important of these is that, in general, a prospect is not a two dimensional model but a three dimensional one. For a complete interpretation of a prospect area the final result should be a migrated time or depth map. With limited sampling (a seismic grid typically consists of loops with dimensions at least 1 km by 1 km) it is necessary to interpolate grid points to allow map migration and this method has inherent inaccuracies.The three dimensional seismic exploration technique is designed to provide a sufficiently close sampled grid of seismic traces, typically with a line and depth point spacing as close as 50-100 m, to allow the seismic data itself to be migrated three dimensionally. This allows the interpreter to work with migrated seismic sections and to contour directly the migrated map.Several techniques exist to allow practical and economic collection of seismic data to provide this close sampling. These techniques can be adapted to various terrain and cultural conditions.The main advantages of three dimensional data collection are correct imaging of the seismic information giving true vertical reflection time sections and improved signal-to-noise ratio due to the increased fold inherent in the three dimensional migration process. The additional advantage to the interpreter is that the data has a sampling which gives a line intersection at each depth point in the prospect.

Synchronization of particle motion induced by mode coupling in a two-dimensional plasma crystal

2014 ◽  
Vol 89 (5) ◽  
Author(s):  
L. Couëdel ◽  
S. Zhdanov ◽  
V. Nosenko ◽  
A. V. Ivlev ◽  
H. M. Thomas ◽  
...  
Keyword(s):  
Particle Motion ◽  
Mode Coupling ◽  
Two Dimensional ◽  
Plasma Crystal
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