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Recrystallization in string-fluid complex plasmas

Joshi, Eshita and Pustylnik, Mikhail and Thoma, Markus H. and Thomas, Hubertus M. and Schwabe, Mierk (2023) Recrystallization in string-fluid complex plasmas. Physical Review Research, 5 (1), L01203. American Physical Society. doi: 10.1103/PhysRevResearch.5.L012030. ISSN 2643-1564.

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Official URL: https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.5.L012030


Complex plasmas, i.e., low-temperature plasmas containing suspensions of solid microparticles, exhibit electrorheological properties which are manifested by the formation of stringlike clusters (SLCs) in microgravity experiments. It is thought that SLCs form due to a long-range effective attraction between the particles under the influence of a directed ion flow. We performed molecular dynamics (MD) simulations of negatively charged microparticles with positive model wakes to mimic the effect of ion flow in experiments, and achieved SLC formation without long-range attraction between the microparticles. We show that long-range-reduced repulsion was enough to obtain the SLCs similar to the experiments and found that the simulations with the long-range attraction became unstable due to particle accelerations. Destruction and recrystallization of the stringlike structure was also studied experimentally using the Plasmakristall-4 facility on board the International Space Station, and the experimental findings were compared to those from three–dimensional MD simulations. We found excellent qualitative agreement between simulation and experiment when recrystallization was simulated using an interparticle potential without effective long-range attraction.

Item URL in elib:https://elib.dlr.de/194375/
Document Type:Article
Title:Recrystallization in string-fluid complex plasmas
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Joshi, EshitaUNSPECIFIEDhttps://orcid.org/0000-0001-8557-1141UNSPECIFIED
Pustylnik, MikhailUNSPECIFIEDhttps://orcid.org/0000-0002-4308-2830UNSPECIFIED
Thoma, Markus H.Justus-Liebig-Universität Gießen, Gießen, Germanyhttps://orcid.org/0000-0002-8816-9120UNSPECIFIED
Thomas, Hubertus M.UNSPECIFIEDhttps://orcid.org/0000-0001-8358-2023UNSPECIFIED
Schwabe, MierkUNSPECIFIEDhttps://orcid.org/0000-0001-6565-5890UNSPECIFIED
Date:2 March 2023
Journal or Publication Title:Physical Review Research
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Page Range:L01203
Publisher:American Physical Society
Keywords:Collective behavior, Complex systems, Crystal forms, Crystal melting, Crystallization, Electric field effects, Electromagnetic interactions, Emergence of patterns, Pattern formation, Patterns in complex systems, Plasma-particle interactions
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 - Research under Space Conditions
DLR - Research theme (Project):R - Materials Research and Microgravity (MuM)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Joshi, Eshita
Deposited On:20 Mar 2023 07:44
Last Modified:20 Mar 2023 07:44

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