Defect line coarsening and refinement in active nematics

Kralj, Nika (avtor), Ravnik, Miha (avtor), Kos, Žiga (avtor)

Active matter is naturally out of equilibrium which results in the emergence of diverse dynamic steady states, including the omnipresent chaotic state known as the active turbulence. However, much less is known how active systems dynamically depart out of these configurations, such as get excited or damped to a different dynamic steady state. In this Letter, we demonstrate the coarsening and refinement dynamics of topological defect lines in three-dimensional active nematic turbulence. Specifically, using theory and numerical modeling, we are able to predict the evolution of the active defect density away from the steady state due to time-dependent activity or viscoelastic material properties, establishing a single length scale phenomenological description of defect line coarsening and refinement in a three-dimensional active nematic. The approach is first applied to growth dynamics of a single active defect loop, and then to a full threedimensional active defect network. More generally, this Letter provides insight into the general coarsening phenomena between dynamical regimes in 3Dactivematter, with a possible analogy in other physical systems.

• Jezik: Angleški jezik
• Ključne besede: soft matter physics, active nematics
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FMF - Fakulteta za matematiko in fiziko
• Različica publikacije: Objavljena publikacija
• Datum objave: 21.03.2023
• Leto izida: 2023
• Št. strani: Str. 128101-1-128101-6
• Številčenje: Vol. 130, iss. 12
• PID: 20.500.12556/RUL-155522
• UDK: 538.9
• ISSN pri članku: 0031-9007
• DOI: 10.1103/PhysRevLett.130.128101
• COBISS.SI-ID: 147577091
• Datum objave v RUL: 05.04.2024

KRALJ, Nika, RAVNIK, Miha in KOS, Žiga, 2023, Defect line coarsening and refinement in active nematics. Physical review letters [na spletu]. 2023. Vol. 130, no. 12, p. 128101-1-128101–6. [Dostopano 7 april 2025]. DOI 10.1103/PhysRevLett.130.128101. Pridobljeno s: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=slv&id=155522

Gradivo je del revije

• Naslov: Physical review letters
• Skrajšan naslov: Phys. rev. lett.
• Založnik: American Physical Society
• ISSN: 0031-9007
• COBISS.SI-ID: 1282575

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: fizika mehke snovi, aktivni nematiki