Journal
SOFT MATTER
Volume 13, Issue 4, Pages 720-724Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6sm02095j
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Funding
- Natural Science and Engineering Research Council of Canada
- Normale Superieure of Paris
- ESPCI Joliot Chair
- LabEx ENS-ICFP [ANR-10-LABX-0010/ANR-10-IDEX-0001-02 PSL]
- Global Station for Soft Matter-a project of Global Institution for Collaborative Research and Education at Hokkaido University
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We report on the elastocapillary deformation of flexible microfibers in contact with liquid droplets. A fiber is observed to bend more as the size of the contacting droplet is increased. At a critical droplet size, proportional to the bending elastocapillary length, the fiber is seen to spontaneously wind around the droplet. To rationalize these observations, we invoke a minimal model based on elastic beam theory, and find agreement with experimental data. Further energetic considerations provide a consistent prediction for the winding criterion.
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