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Title: A three-dimensional model for the effective viscosity of bacterial suspensions.

Abstract

We derive the effective viscosity of dilute suspensions of swimming bacteria from the microscopic details of the interaction of an elongated body with the background flow. An individual bacterium propels itself forward by rotating its flagella and reorients itself randomly by tumbling. Due to the bacterium's asymmetric shape, interactions with a prescribed generic (such as planar shear or straining) background flow cause the bacteria to preferentially align in directions in which self-propulsion produces a significant reduction in the effective viscosity, in agreement with recent experiments on suspensions of Bacillus subtilis.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); National Science Foundation (NSF)
OSTI Identifier:
979872
Report Number(s):
ANL/MSD/JA-64359
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US201011%%437
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Phys. Rev. Lett.
Additional Journal Information:
Journal Volume: 80; Journal Issue: 2009; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
ENGLISH
Subject:
59 BASIC BIOLOGICAL SCIENCES; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; BACILLUS SUBTILIS; BACTERIA; SHAPE; SHEAR; VISCOSITY

Citation Formats

Haines, B M, Sokolov, A, Aranson, I S, Berlyand, L, Karpeev, D A, Pennsylvania State Univ., and Illinois Inst. of Tech. A three-dimensional model for the effective viscosity of bacterial suspensions.. United States: N. p., 2009. Web. doi:10.1103/PhysRevE.80.041922.
Haines, B M, Sokolov, A, Aranson, I S, Berlyand, L, Karpeev, D A, Pennsylvania State Univ., & Illinois Inst. of Tech. A three-dimensional model for the effective viscosity of bacterial suspensions.. United States. https://doi.org/10.1103/PhysRevE.80.041922
Haines, B M, Sokolov, A, Aranson, I S, Berlyand, L, Karpeev, D A, Pennsylvania State Univ., and Illinois Inst. of Tech. 2009. "A three-dimensional model for the effective viscosity of bacterial suspensions.". United States. https://doi.org/10.1103/PhysRevE.80.041922.
@article{osti_979872,
title = {A three-dimensional model for the effective viscosity of bacterial suspensions.},
author = {Haines, B M and Sokolov, A and Aranson, I S and Berlyand, L and Karpeev, D A and Pennsylvania State Univ. and Illinois Inst. of Tech.},
abstractNote = {We derive the effective viscosity of dilute suspensions of swimming bacteria from the microscopic details of the interaction of an elongated body with the background flow. An individual bacterium propels itself forward by rotating its flagella and reorients itself randomly by tumbling. Due to the bacterium's asymmetric shape, interactions with a prescribed generic (such as planar shear or straining) background flow cause the bacteria to preferentially align in directions in which self-propulsion produces a significant reduction in the effective viscosity, in agreement with recent experiments on suspensions of Bacillus subtilis.},
doi = {10.1103/PhysRevE.80.041922},
url = {https://www.osti.gov/biblio/979872}, journal = {Phys. Rev. Lett.},
issn = {0031-9007},
number = 2009,
volume = 80,
place = {United States},
year = {2009},
month = {1}
}