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KÁRMÁN VORTEX CITY OF DNA STRANDS

Ström, Oskar E. LU orcid ; Beech, Jason P. LU and Tegenfeldt, Jonas O. LU orcid (2021) 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2021 p.13-14
Abstract

Kármán vortex streets are repeating patterns of swirling vortices, appearing when a fluid passes an obstacle at Re>50. We present an array of interacting vortices, a Kármán vortex city, that arises when a DNA solution flows through an array of micro posts at Re <0.5. Above thresholds in concentration and flow rate, the vortices formed behind posts interact, leading to concentration fluctuation waves. We explore the effect of lattice structure, polymer length and salt and relate the wave formation to the overlap concentration. Our work will allow us to optimize high-concentration DNA manipulation and sorting of DNA in microfluidic arrays.

Please use this url to cite or link to this publication:
author
; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
DNA concentration waves, DNA sorting, Kármán vortex street, Pillar Arrays
host publication
MicroTAS 2021 - 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences
pages
2 pages
publisher
Chemical and Biological Microsystems Society
conference name
25th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2021
conference location
Palm Springs, Virtual, United States
conference dates
2021-10-10 - 2021-10-14
external identifiers
  • scopus:85137000711
ISBN
9781733419031
language
English
LU publication?
yes
id
d6cd2662-6660-47e5-8ab0-62054515749e
date added to LUP
2022-11-08 13:31:03
date last changed
2023-10-23 06:44:36
@inproceedings{d6cd2662-6660-47e5-8ab0-62054515749e,
  abstract     = {{<p>Kármán vortex streets are repeating patterns of swirling vortices, appearing when a fluid passes an obstacle at Re&gt;50. We present an array of interacting vortices, a Kármán vortex city, that arises when a DNA solution flows through an array of micro posts at Re &lt;0.5. Above thresholds in concentration and flow rate, the vortices formed behind posts interact, leading to concentration fluctuation waves. We explore the effect of lattice structure, polymer length and salt and relate the wave formation to the overlap concentration. Our work will allow us to optimize high-concentration DNA manipulation and sorting of DNA in microfluidic arrays.</p>}},
  author       = {{Ström, Oskar E. and Beech, Jason P. and Tegenfeldt, Jonas O.}},
  booktitle    = {{MicroTAS 2021 - 25th International Conference on Miniaturized Systems for Chemistry and Life Sciences}},
  isbn         = {{9781733419031}},
  keywords     = {{DNA concentration waves; DNA sorting; Kármán vortex street; Pillar Arrays}},
  language     = {{eng}},
  pages        = {{13--14}},
  publisher    = {{Chemical and Biological Microsystems Society}},
  title        = {{KÁRMÁN VORTEX CITY OF DNA STRANDS}},
  year         = {{2021}},
}