Journal
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
Volume 224, Issue 7, Pages 1275-1286Publisher
SPRINGER HEIDELBERG
DOI: 10.1140/epjst/e2015-02459-x
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Funding
- ERC Advanced Grant INTERCOCOS [267499]
- German Science Foundation (DFG)
- U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES), Materials Science and Engineering Division
- European Research Council (ERC) [267499] Funding Source: European Research Council (ERC)
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The motion of a pair of micro-wedges (carriers) in a turbulent bacterial bath is explored using computer simulations with explicit modeling of the bacteria and experiments. The orientation of the two micro-wedges is fixed by an external magnetic field but the translational coordinates can move freely as induced by the bacterial bath. As a result, two carriers of same orientation move such that their mutual distance decreases, while they drift apart for an anti-parallel orientation. Eventually the two carriers stack on each other with no intervening bacteria exhibiting a stable dynamical mode where the two micro-wedges follow each other with the same velocity. These findings are in qualitative agreement with experiment on two micro-wedges in a bacterial bath. Our results provide insight into understanding self-assembly of many micro-wedges in an active bath.
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