Biofluiddynamics    Drops    Bubbles    Soft Matter    Nanofabrication   

Soft Matter

Botanical movements

Related publications
1. W. Jung, W. Kim, and H.-Y. Kim, “Self-burial mechanics of hygroscopically responsive awns,” Integrative and Comparative Biology 54, 1034–1042 (2014)
2. W. Jung, S. M. Choi, W. Kim, and H.-Y. Kim, “Reduction of granular drag inspired by self-burrowing rotary seeds,” Physics of Fluids 29, 041702 (2017)
3. B. Shin, J. Ha, M. Lee, K. Park, G. H. Park, T. H. Choi, K.-J. Cho, and H.-Y. Kim, “Hygrobot: A self-locomotive ratcheted actuator powered by environmental humidity,” Science Robotics 3, eaar2629 (2018)

Elastocapillary coalescence of plates and pillars

When a paintbrush is dipped into a bucket of paint and pulled out, surface tension forces cause the individual hairs in the brush to coalesce which simultaneously becomes impregnated with paint. We study such elastocapillary interactions by conducting simple experiments and solving free-boundary problems.

Related publications
1. D. Vella, H.-Y. Kim, and L. Mahadevan, "The wall-induced motion of a floating flexible train," Journal of Fluid Mechanics 502, 89-98 (2004)
2. H.-Y. Kim and L. Mahadevan, "Capillary rise between elastic sheets," Journal of Fluid Mechanics 548, 141-150 (2006)
3. H.-M. Kwon, H.-Y. Kim, J. Puell, and L. Mahadevan, "Equilibrium of an elastically confined liquid drop," Journal of Applied Physics 103, 093519 (2008)
4. K. J. Park and H.-Y. Kim, "Bending of floating flexible legs," Journal of Fluid Mechanics 610, 381-390 (2008)
5. Z. Wei, T. M. Schneider, J. Kim, H.-Y. Kim, J. Aizenberg, and L. Mahadevan, "Elastocapillary coalescence of plates and pillars," Proceedings of the Royal Society A 471, 20140593 (2015)
6. T.-H. Kim, J. Kim, and H.-Y. Kim, "Evaporation-driven clustering of microscale pillars and lamellae," Physics of Fluids 28, 022003 (2016)


Related publications
1. J. Kim, J. Ha, and H.-Y. Kim, "Capillary rise of non-aqueous liquids in cellulose sponges," Journal of Fluid Mechanics 818, R2 (2017)
2. J. Ha, J. Kim, Y. Jung, G. Yun, D.-N. Kim, and H.-Y. Kim, "Poro-elasto-capillary wicking of cellulose sponges," Science Advances 4, eaao7051 (2018)
3. M. Lee, S. Kim, H.-Y. Kim, and L. Mahadevan, "Bending and buckling of wet paper," Physics of Fluids 28, 042101 (2016)