Projects per year
Abstract
We have measured the spatial distribution of motile Escherichia coli inside spherical water droplets emulsified in oil. At low cell concentrations, the cell density peaks at the water-oil interface; at increasing concentration, the bulk of each droplet fills up uniformly while the surface peak remains. Simulations and theory show that the bulk density results from a "traffic" of cells leaving the surface layer, increasingly due to cell-cell scattering as the surface coverage rises above similar to 10%. Our findings show similarities with the physics of a rarefied gas in a spherical cavity with attractive walls.
Original language | English |
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Article number | 268101 |
Pages (from-to) | 1-5 |
Number of pages | 5 |
Journal | Physical Review Letters |
Volume | 113 |
Issue number | 26 |
Early online date | 22 Dec 2014 |
DOIs | |
Publication status | Published - 31 Dec 2014 |
Keywords / Materials (for Non-textual outputs)
- FLUID-DYNAMICS
- IMAGE-ANALYSIS
- SURFACE
- MICROSCOPY
- GEOMETRY
Fingerprint
Dive into the research topics of 'Filling an Emulsion Drop with Motile Bacteria'. Together they form a unique fingerprint.Projects
- 2 Finished
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PHYSAPS: The Physics of Active Particle Suspensions
Poon, W. (Principal Investigator)
1/02/14 → 31/01/20
Project: Research
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Design Principles for New Soft Materials
Cates, M. (Principal Investigator), Allen, R. (Co-investigator), Clegg, P. (Co-investigator), Evans, M. (Co-investigator), MacPhee, C. (Co-investigator), Marenduzzo, D. (Co-investigator) & Poon, W. (Co-investigator)
7/12/11 → 6/06/17
Project: Research
Profiles
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Jochen Arlt
- School of Physics and Astronomy - Senior Lecturer
Person: Academic: Research Active (Research Assistant)
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Alexander Morozov
- School of Physics and Astronomy - Personal Chair of Fluid Mechanics
Person: Academic: Research Active