Journal
PHYSICAL REVIEW LETTERS
Volume 102, Issue 16, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.102.168101
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Funding
- BBSRC
- DOE
- Schlumberger Chair Fund
- BBSRC [BB/F021844/1] Funding Source: UKRI
- Biotechnology and Biological Sciences Research Council [BB/F021844/1] Funding Source: researchfish
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The spherical alga Volvox swims by means of flagella on thousands of surface somatic cells. This geometry and its large size make it a model organism for studying the fluid dynamics of multicellularity. Remarkably, when two nearby Volvox colonies swim close to a solid surface, they attract one another and can form stable bound states in which they waltz or minuet around each other. A surface-mediated hydrodynamic attraction combined with lubrication forces between spinning, bottom-heavy Volvox explains the formation, stability, and dynamics of the bound states. These phenomena are suggested to underlie observed clustering of Volvox at surfaces.
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