---
OA_place: publisher
_id: '14530'
abstract:
- lang: eng
  text: 'Most motions of many-body systems at any scale in nature with sufficient
    degrees of freedom tend to be chaotic; reaching from the orbital motion of planets,
    the air currents in our atmosphere, down to the water flowing through our pipelines
    or the movement of a population of bacteria. To the observer it is therefore intriguing
    when a moving collective exhibits order. Collective motion of flocks of birds,
    schools of fish or swarms of self-propelled particles or robots have been studied
    extensively over the past decades but the mechanisms involved in the transition
    from chaos to order remain unclear. Here, the interactions, that in most systems
    give rise to chaos, sustain order.  In this thesis we investigate mechanisms that
    preserve, destabilize or lead to the ordered state. We show that endothelial cells
    migrating in circular confinements transition to a collective rotating state and
    concomitantly synchronize the frequencies of nucleating actin waves within individual
    cells. Consequently, the frequency dependent cell migration speed uniformizes
    across the population. Complementary to the WAVE dependent nucleation of traveling
    actin waves, we show that in leukocytes the actin polymerization depending on
    WASp generates pushing forces locally at stationary patches. Next, in pipe flows,
    we study methods to disrupt the self--sustaining cycle of turbulence and therefore
    relaminarize the flow. While we find in pulsating flow conditions that turbulence
    emerges through a helical instability during the decelerating phase. Finally,
    we show quantitatively in brain slices of mice that wild-type control neurons
    can compensate the migratory deficits 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/10.15479/14530">10.15479/14530</a>
  apa: Riedl, M. (2023). <i>Synchronization in collectively moving active matter</i>.
    Institute of Science and Technology Austria. <a href="https://doi.org/10.15479/14530">https://doi.org/10.15479/14530</a>
  chicago: Riedl, Michael. “Synchronization in Collectively Moving Active Matter.”
    Institute of Science and Technology Austria, 2023. <a href="https://doi.org/10.15479/14530">https://doi.org/10.15479/14530</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/10.15479/14530">10.15479/14530</a>.
  short: M. Riedl, Synchronization in Collectively Moving Active Matter, Institute
    of Science and Technology Austria, 2023.
corr_author: '1'
date_created: 2023-11-15T09:59:03Z
date_published: 2023-11-16T00:00:00Z
date_updated: 2026-04-07T13:29:13Z
day: '16'
ddc:
- '530'
- '570'
degree_awarded: PhD
department:
- _id: GradSch
- _id: MiSi
doi: 10.15479/14530
file:
- access_level: open_access
  checksum: 52e1d0ab6c1abe59c82dfe8c9ff5f83a
  content_type: application/pdf
  creator: mriedl
  date_created: 2023-11-15T09:52:54Z
  date_updated: 2023-11-15T09:52:54Z
  file_id: '14536'
  file_name: Thesis_Riedl_2023_corr.pdf
  file_size: 36743942
  relation: main_file
  success: 1
file_date_updated: 2023-11-15T09:52:54Z
has_accepted_license: '1'
keyword:
- Synchronization
- Collective Movement
- Active Matter
- Cell Migration
- Active Colloids
language:
- iso: eng
month: '11'
oa: 1
oa_version: Updated Version
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: '12726'
    relation: old_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'
...