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Tracking and linking of microparticle trajectories during mode-coupling induced melting in a two-dimensional complex plasma crystal

Couedel, L. and Nosenko, Volodymyr (2019) Tracking and linking of microparticle trajectories during mode-coupling induced melting in a two-dimensional complex plasma crystal. Journal of Imaging, 5 (3), pp. 41-1. Multidisciplinary Digital Publishing Institute (MDPI). DOI: 10.3390/jimaging5030041 ISSN 2313-433X

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Official URL: https://www.mdpi.com/2313-433X/5/3/41

Abstract

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.

Item URL in elib:https://elib.dlr.de/126872/
Document Type:Article
Title:Tracking and linking of microparticle trajectories during mode-coupling induced melting in a two-dimensional complex plasma crystal
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Couedel, L.CNRS, Aix-Marseille UniversiteUNSPECIFIED
Nosenko, VolodymyrV.Nosenko (at) dlr.deUNSPECIFIED
Date:16 March 2019
Journal or Publication Title:Journal of Imaging
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:No
Volume:5
DOI :10.3390/jimaging5030041
Page Range:pp. 41-1
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
ISSN:2313-433X
Status:Published
Keywords:complex plasma crystals; particle tracking; mode coupling instability
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Komplexe Plasmen / Laboratory research
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Materials Physics in Space > Research Group Complex Plasma
Deposited By: Nosenko, Volodymyr
Deposited On:21 Mar 2019 13:28
Last Modified:06 Sep 2019 14:49

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