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Light control of localized photobioconvection
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Arrieta, Jorge, Polin, Marco, Saleta-Piersanti, Ramon and Tuval, Idan (2019) Light control of localized photobioconvection. Physical Review Letters, 123 (15). 158101. doi:10.1103/PhysRevLett.123.158101 ISSN 0031-9007.
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Official URL: https://doi.org/10.1103/PhysRevLett.123.158101
Abstract
Microorganismal motility is often characterized by complex responses to environmental physico-chemical stimuli. Although the biological basis of these responses is often not well understood, their exploitation already promises novel avenues to directly control the motion of living active matter at both the individual and collective level. Here we leverage the phototactic ability of the model microalga Chlamydomonas reinhardtii to precisely control the timing and position of localized cell photoaccumulation, leading to the controlled development of isolated bioconvective plumes. This novel form of photobioconvection allows a precise, fast, and reconfigurable control of the spatiotemporal dynamics of the instability and the ensuing global recirculation, which can be activated and stopped in real time. A simple continuum model accounts for the phototactic response of the suspension and demonstrates how the spatiotemporal dynamics of the illumination field can be used as a simple external switch to produce efficient bio mixing.
Item Type: | Journal Article | ||||||||||||
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Subjects: | Q Science > QH Natural history Q Science > QK Botany Q Science > QR Microbiology |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School |
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Library of Congress Subject Headings (LCSH): | Microorganisms -- Motility, Chlamydomonas reinhardtii, Microalgae, Photobiology | ||||||||||||
Journal or Publication Title: | Physical Review Letters | ||||||||||||
Publisher: | American Physical Society | ||||||||||||
ISSN: | 0031-9007 | ||||||||||||
Official Date: | 11 October 2019 | ||||||||||||
Dates: |
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Volume: | 123 | ||||||||||||
Number: | 15 | ||||||||||||
Article Number: | 158101 | ||||||||||||
DOI: | 10.1103/PhysRevLett.123.158101 | ||||||||||||
Status: | Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||||
Copyright Holders: | © 2019 American Physical Society | ||||||||||||
Date of first compliant deposit: | 14 January 2020 | ||||||||||||
Date of first compliant Open Access: | 14 January 2020 | ||||||||||||
RIOXX Funder/Project Grant: |
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Open Access Version: |
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