309 citations · 640 across the 6 of their papers we have counts for
6 papers
Inclination-Induced Crossover in the Velocity Scaling of Lubrication-Mediated Droplet Motion
Haruka Hitomi, Ko Okumura
We experimentally investigate the creeping motion of water droplets sliding along an inclined surface immersed in a viscous oil. The droplet velocity, width, and height are measure…
Universality in the velocity jump in the crack propagation observed for food-wrapping films for daily use
Aoi Nohara, Ko Okumura
The velocity jump found in the crack propagation for rubbers has been a powerful tool for developing tough rubber materials. Although it is suggested by a theory that the jump coul…
Continuous generation of confined bubbles: viscous effect on the gravito-capillary pinch off
Haruka Hitomi, Ko Okumura
We investigate continuous generation of bubbles from a bath of air in viscous liquid in a confined geometry. In our original setup, bubbles are spontaneously generated by virtue of…
Universality in the mechanics of soft Kirigami
Yukino Kako, Ko Okumura
Recently, simple scaling laws concerning the mechanical response and mechanical transition of Kirigami have been revealed through agreement between theory and experiment for kiriga…
Water spring: a model for bouncing drops
K. Okumura, F. Chevy, C. Clanet +2
It has been shown that a water drop can bounce persistently, when thrown on a super-hydrophobic substrate. We present here scaling arguments which allow us to predict the maximal d…
Why is nacre strong? II: remaining mechanical weakness for cracks propagating along the sheets
Ko Okumura
In our previous paper (Eur. Phys. J. E 4, 121 (2001)) we proposed a coarse-grained elastic energy for nacre, or stratified structure of hard and soft layers. We then analyzed a cra…