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© Research
Publication : Physical review. E

Long-range nematic order and anomalous fluctuations in suspensions of swimming filamentous bacteria

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Physical review. E - 07 Feb 2017

Nishiguchi D, Nagai KH, Chaté H, Sano M

Link to Pubmed [PMID] – 28297912

Phys Rev E 2017 Feb;95(2-1):020601

We study the collective dynamics of elongated swimmers in a very thin fluid layer by devising long filamentous nontumbling bacteria. The strong confinement induces weak nematic alignment upon collision, which, for large enough density of cells, gives rise to global nematic order. This homogeneous but fluctuating phase, observed on the largest experimentally accessible scale of millimeters, exhibits the properties predicted by standard models for flocking, such as the Vicsek-style model of polar particles with nematic alignment: true long-range nematic order and nontrivial giant number fluctuations.

https://www.ncbi.nlm.nih.gov/pubmed/28297912