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Symmetrically pulsating bubbles swim in an anisotropic fluid by nematodynamics
ID
Kim, Sung-Jo
(
Author
),
ID
Kos, Žiga
(
Author
),
ID
Um, Eujin
(
Author
),
ID
Jeong, Joonwoo
(
Author
)
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MD5: B62268F1793ED2431D5B7CC21B39E0C5
URL - Source URL, Visit
https://www.nature.com/articles/s41467-024-45597-1
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Abstract
Swimming in low-Reynolds-number fluids requires the breaking of timereversal symmetry and centrosymmetry. Microswimmers, often with asymmetric shapes, exhibit nonreciprocal motions or exploit nonequilibrium processes to propel. The role of the surrounding fluid has also attracted attention because viscoelastic, non-Newtonian, and anisotropic properties of fluids matter in propulsion efficiency and navigation. Here, we experimentally demonstrate that anisotropic fluids, nematic liquid crystals (NLC), can make a pulsating spherical bubble swim despite its centrosymmetric shape and timesymmetric motion. The NLC breaks the centrosymmetry by a deformed nematicdirector fieldwithatopologicaldefectaccompanyingthebubble.The nematodynamics renders the nonreciprocity in the pulsation-induced fluid f low. We also report speed enhancement by confinement and the propulsion of another symmetry-broken bubble dressed by a bent disclination. Our experiments and theory propose another possible mechanism of moving bodies in complex fluids by spatiotemporal symmetry breaking.
Language:
English
Keywords:
hydrodynamics
,
complex fluids
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
FMF - Faculty of Mathematics and Physics
Publication version:
Version of Record
Publication date:
09.02.2024
Year:
2024
Number of pages:
8 str.
Numbering:
Vol. 15, art. no. ǂ1220
PID:
20.500.12556/RUL-155036
UDC:
532.5
ISSN on article:
2041-1723
DOI:
10.1038/s41467-024-45597-1
COBISS.SI-ID:
189133059
Publication date in RUL:
15.03.2024
Views:
370
Downloads:
159
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Record is a part of a journal
Title:
Nature communications
Shortened title:
Nat. Commun.
Publisher:
Nature Publishing Group
ISSN:
2041-1723
COBISS.SI-ID:
2315876
Licences
License:
CC BY 4.0, Creative Commons Attribution 4.0 International
Link:
http://creativecommons.org/licenses/by/4.0/
Description:
This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Secondary language
Language:
Slovenian
Keywords:
hidrodinamika
,
kompleksne tekočine
Projects
Funder:
Other - Other funder or multiple funders
Funding programme:
Korea, National Research Foundation
Project number:
NRF-2018R1A6A3A01010921
Funder:
Other - Other funder or multiple funders
Project number:
IBS-R020-D1
Funder:
Other - Other funder or multiple funders
Funding programme:
Korea, National Research Foundation
Project number:
NRF-2022R1A2C1010700
Funder:
Other - Other funder or multiple funders
Funding programme:
Korea, National Research Foundation
Project number:
NRF-2020R1A4A1019140
Funder:
Other - Other funder or multiple funders
Funding programme:
Korea, National Research Foundation
Project number:
NRF-2021R1A2C101116312
Funder:
ARRS - Slovenian Research Agency
Project number:
P1-0099
Name:
Fizika mehkih snovi, površin in nanostruktur
Funder:
ARRS - Slovenian Research Agency
Project number:
N1-0124
Name:
Geometrijsko in topološko vodenje aktivnih elastomerov
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