---
OA_place: publisher
_id: '12726'
abstract:
- lang: eng
  text: "Most motions of many-body systems at any scale in nature with sufficient
    degrees\r\nof freedom tend to be chaotic; reaching from the orbital motion of
    planets, the air\r\ncurrents in our atmosphere, down to the water flowing through
    our pipelines or\r\nthe movement of a population of bacteria. To the observer
    it is therefore intriguing\r\nwhen a moving collective exhibits order. Collective
    motion of flocks of birds, schools\r\nof fish or swarms of self-propelled particles
    or robots have been studied extensively\r\nover the past decades but the mechanisms
    involved in the transition from chaos to\r\norder remain unclear. Here, the interactions,
    that in most systems give rise to chaos,\r\nsustain order. In this thesis we investigate
    mechanisms that preserve, destabilize\r\nor lead to the ordered state. We show
    that endothelial cells migrating in circular\r\nconfinements transition to a collective
    rotating state and concomitantly synchronize\r\nthe frequencies of nucleating
    actin waves within individual cells. Consequently,\r\nthe frequency dependent
    cell migration speed uniformizes across the population.\r\nComplementary to the
    WAVE dependent nucleation of traveling actin waves, we\r\nshow that in leukocytes
    the actin polymerization depending on WASp generates\r\npushing forces locally
    at stationary patches. Next, in pipe flows, we study methods\r\nto disrupt the
    self–sustaining cycle of turbulence and therefore relaminarize the\r\nflow. While
    we find in pulsating flow conditions that turbulence emerges through a\r\nhelical
    instability during the decelerating phase. Finally, we show quantitatively in\r\nbrain
    slices of mice that wild-type control neurons can compensate the migratory\r\ndeficits
    of a genetically modified neuronal sub–population in the developing cortex."
acknowledged_ssus:
- _id: M-Shop
- _id: Bio
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Michael
  full_name: Riedl, Michael
  id: 3BE60946-F248-11E8-B48F-1D18A9856A87
  last_name: Riedl
  orcid: 0000-0003-4844-6311
citation:
  ama: Riedl M. Synchronization in collectively moving active matter. 2023. doi:<a
    href="https://doi.org/10.15479/at:ista:12726">10.15479/at:ista:12726</a>
  apa: Riedl, M. (2023). <i>Synchronization in collectively moving active matter</i>.
    Institute of Science and Technology Austria. <a href="https://doi.org/10.15479/at:ista:12726">https://doi.org/10.15479/at:ista:12726</a>
  chicago: Riedl, Michael. “Synchronization in Collectively Moving Active Matter.”
    Institute of Science and Technology Austria, 2023. <a href="https://doi.org/10.15479/at:ista:12726">https://doi.org/10.15479/at:ista:12726</a>.
  ieee: M. Riedl, “Synchronization in collectively moving active matter,” Institute
    of Science and Technology Austria, 2023.
  ista: Riedl M. 2023. Synchronization in collectively moving active matter. Institute
    of Science and Technology Austria.
  mla: Riedl, Michael. <i>Synchronization in Collectively Moving Active Matter</i>.
    Institute of Science and Technology Austria, 2023, doi:<a href="https://doi.org/10.15479/at:ista:12726">10.15479/at:ista:12726</a>.
  short: M. Riedl, Synchronization in Collectively Moving Active Matter, Institute
    of Science and Technology Austria, 2023.
corr_author: '1'
date_created: 2023-03-15T13:22:13Z
date_published: 2023-03-23T00:00:00Z
date_updated: 2026-04-07T13:29:13Z
day: '23'
ddc:
- '530'
degree_awarded: PhD
department:
- _id: GradSch
- _id: BjHo
doi: 10.15479/at:ista:12726
file:
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  creator: cchlebak
  date_created: 2023-03-23T12:49:23Z
  date_updated: 2023-11-24T11:57:46Z
  description: the main file is missing the bibliography. See new thesis record 14530
    for updated files.
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  file_name: Thesis_Riedl_2023.pdf
  file_size: 63734746
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  date_created: 2023-03-23T12:54:34Z
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  file_id: '12746'
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  file_size: 339473651
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file_date_updated: 2023-11-24T11:57:46Z
has_accepted_license: '1'
language:
- iso: eng
month: '03'
oa_version: None
page: '260'
publication_identifier:
  issn:
  - 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '461'
    relation: part_of_dissertation
    status: public
  - id: '10791'
    relation: part_of_dissertation
    status: public
  - id: '7932'
    relation: part_of_dissertation
    status: public
  - id: '10703'
    relation: part_of_dissertation
    status: public
  - id: '14530'
    relation: new_edition
    status: public
status: public
supervisor:
- first_name: Björn
  full_name: Hof, Björn
  id: 3A374330-F248-11E8-B48F-1D18A9856A87
  last_name: Hof
  orcid: 0000-0003-2057-2754
title: Synchronization in collectively moving active matter
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2023'
...