A transition to stable one-dimensional swimming enhances E. coli motility through narrow channels. Vizsnyiczai, G., Frangipane, G., Bianchi, S., Saglimbeni, F., Dell’Arciprete, D., & Di Leonardo, R. Nature Communications, Nature Research, 2020. cited By 1
Paper doi abstract bibtex Living organisms often display adaptive strategies that allow them to move efficiently even in strong confinement. With one single degree of freedom, the angle of a rotating bundle of flagella, bacteria provide one of the simplest examples of locomotion in the living world. Here we show that a purely physical mechanism, depending on a hydrodynamic stability condition, is responsible for a confinement induced transition between two swimming states in E. coli. While in large channels bacteria always crash onto confining walls, when the cross section falls below a threshold, they leave the walls to move swiftly on a stable swimming trajectory along the channel axis. We investigate this phenomenon for individual cells that are guided through a sequence of micro-fabricated tunnels of decreasing cross section. Our results challenge current theoretical predictions and suggest effective design principles for microrobots by showing that motility based on helical propellers provides a robust swimming strategy for exploring narrow spaces. © 2020, The Author(s).
@ARTICLE{Vizsnyiczai2020,
author={Vizsnyiczai, G. and Frangipane, G. and Bianchi, S. and Saglimbeni, F. and Dell’Arciprete, D. and Di Leonardo, R.},
title={A transition to stable one-dimensional swimming enhances E. coli motility through narrow channels},
journal={Nature Communications},
year={2020},
volume={11},
number={1},
doi={10.1038/s41467-020-15711-0},
art_number={2340},
note={cited By 1},
url={https://www.scopus.com/inward/record.uri?eid=2-s2.0-85084514154&doi=10.1038%2fs41467-020-15711-0&partnerID=40&md5=dca23012f8370f6db256b74a13012726},
abstract={Living organisms often display adaptive strategies that allow them to move efficiently even in strong confinement. With one single degree of freedom, the angle of a rotating bundle of flagella, bacteria provide one of the simplest examples of locomotion in the living world. Here we show that a purely physical mechanism, depending on a hydrodynamic stability condition, is responsible for a confinement induced transition between two swimming states in E. coli. While in large channels bacteria always crash onto confining walls, when the cross section falls below a threshold, they leave the walls to move swiftly on a stable swimming trajectory along the channel axis. We investigate this phenomenon for individual cells that are guided through a sequence of micro-fabricated tunnels of decreasing cross section. Our results challenge current theoretical predictions and suggest effective design principles for microrobots by showing that motility based on helical propellers provides a robust swimming strategy for exploring narrow spaces. © 2020, The Author(s).},
publisher={Nature Research},
issn={20411723},
pubmed_id={32393772},
document_type={Article},
source={Scopus},
}
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