期刊
PHYSICAL REVIEW E
卷 90, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.90.062312
关键词
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资金
- National Science Foundation [DMR-1408259]
- Juan de la Cierva Fellowship
- European Marie Curie Integration Grant [322326-COSAAC-FP7-PEOPLE-CIG-2012]
- Spanish National Project [FIS2013-43209-P]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1408259] Funding Source: National Science Foundation
We study the elastic properties of a rigid filament in a bath of self-propelled particles. We find that while fully flexible filaments swell monotonically upon increasing the strength of the propelling force, rigid filaments soften for moderate activities, collapse into metastable hairpins for intermediate strengths, and eventually reexpand when the strength of the activity of the surrounding fluid is large. This collapse and reexpansion of the filament with the bath activity is reminiscent of the behavior observed in polyelectrolytes in the presence of different concentrations of multivalent salt.
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