Unifying polar and nematic active matter: Emergence and co-existence of half-integer and full-integer topological defects

Research output: Contribution to journal › Journal article › Research › peer-review

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Unifying polar and nematic active matter : Emergence and co-existence of half-integer and full-integer topological defects. / Amiri, Aboutaleb; Mueller, Romain; Doostmohammadi, Amin.

In: Journal of Physics A: Mathematical and Theoretical, Vol. 55, No. 9, 094002, 04.03.2022.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Amiri, A, Mueller, R & Doostmohammadi, A 2022, 'Unifying polar and nematic active matter: Emergence and co-existence of half-integer and full-integer topological defects', Journal of Physics A: Mathematical and Theoretical, vol. 55, no. 9, 094002. https://doi.org/10.1088/1751-8121/ac4abe

APA

Amiri, A., Mueller, R., & Doostmohammadi, A. (2022). Unifying polar and nematic active matter: Emergence and co-existence of half-integer and full-integer topological defects. Journal of Physics A: Mathematical and Theoretical, 55(9), [094002]. https://doi.org/10.1088/1751-8121/ac4abe

Vancouver

Amiri A, Mueller R, Doostmohammadi A. Unifying polar and nematic active matter: Emergence and co-existence of half-integer and full-integer topological defects. Journal of Physics A: Mathematical and Theoretical. 2022 Mar 4;55(9). 094002. https://doi.org/10.1088/1751-8121/ac4abe

Author

Amiri, Aboutaleb ; Mueller, Romain ; Doostmohammadi, Amin. / Unifying polar and nematic active matter : Emergence and co-existence of half-integer and full-integer topological defects. In: Journal of Physics A: Mathematical and Theoretical. 2022 ; Vol. 55, No. 9.

Bibtex

@article{b2fb0ab284fd435bbd5df86d0824d626,
title = "Unifying polar and nematic active matter: Emergence and co-existence of half-integer and full-integer topological defects",
abstract = "The presence and significance of active topological defects is increasingly realised in diverse biological and biomimetic systems. We introduce a continuum model of polar active matter, based on conservation laws and symmetry arguments, that recapitulates both polar and apolar (nematic) features of topological defects in active turbulence. Using numerical simulations of the continuum model, we demonstrate the emergence of both half- and full-integer topological defects in polar active matter. Interestingly, we find that crossover from active turbulence with half-to full-integer defects can emerge with the coexistence region characterized by both defect types. These results put forward a minimal, generic framework for studying topological defect patterns in active matter which is capable of explaining the emergence of half-integer defects in polar systems such as bacteria and cell monolayers, as well as predicting the emergence of coexisting defect states in active matter.",
keywords = "active matter, nematic, polar, topological defects",
author = "Aboutaleb Amiri and Romain Mueller and Amin Doostmohammadi",
note = "Publisher Copyright: {\textcopyright} 2022 The Author(s). Published by IOP Publishing Ltd.",
year = "2022",
month = mar,
day = "4",
doi = "10.1088/1751-8121/ac4abe",
language = "English",
volume = "55",
journal = "Journal of Physics A: Mathematical and Theoretical",
issn = "1751-8113",
publisher = "Institute of Physics Publishing Ltd",
number = "9",

}

RIS

TY - JOUR

T1 - Unifying polar and nematic active matter

T2 - Emergence and co-existence of half-integer and full-integer topological defects

AU - Amiri, Aboutaleb

AU - Mueller, Romain

AU - Doostmohammadi, Amin

N1 - Publisher Copyright: © 2022 The Author(s). Published by IOP Publishing Ltd.

PY - 2022/3/4

Y1 - 2022/3/4

N2 - The presence and significance of active topological defects is increasingly realised in diverse biological and biomimetic systems. We introduce a continuum model of polar active matter, based on conservation laws and symmetry arguments, that recapitulates both polar and apolar (nematic) features of topological defects in active turbulence. Using numerical simulations of the continuum model, we demonstrate the emergence of both half- and full-integer topological defects in polar active matter. Interestingly, we find that crossover from active turbulence with half-to full-integer defects can emerge with the coexistence region characterized by both defect types. These results put forward a minimal, generic framework for studying topological defect patterns in active matter which is capable of explaining the emergence of half-integer defects in polar systems such as bacteria and cell monolayers, as well as predicting the emergence of coexisting defect states in active matter.

AB - The presence and significance of active topological defects is increasingly realised in diverse biological and biomimetic systems. We introduce a continuum model of polar active matter, based on conservation laws and symmetry arguments, that recapitulates both polar and apolar (nematic) features of topological defects in active turbulence. Using numerical simulations of the continuum model, we demonstrate the emergence of both half- and full-integer topological defects in polar active matter. Interestingly, we find that crossover from active turbulence with half-to full-integer defects can emerge with the coexistence region characterized by both defect types. These results put forward a minimal, generic framework for studying topological defect patterns in active matter which is capable of explaining the emergence of half-integer defects in polar systems such as bacteria and cell monolayers, as well as predicting the emergence of coexisting defect states in active matter.

KW - active matter

KW - nematic

KW - polar

KW - topological defects

U2 - 10.1088/1751-8121/ac4abe

DO - 10.1088/1751-8121/ac4abe

M3 - Journal article

AN - SCOPUS:85124379355

VL - 55

JO - Journal of Physics A: Mathematical and Theoretical

JF - Journal of Physics A: Mathematical and Theoretical

SN - 1751-8113

IS - 9

M1 - 094002

ER -

ID: 301460573