Sculpting Liquids with Ultrathin Shells

Timounay, Y; Hartwell, AR; [...] Demery, V; Paulsen, JD
Phys. Rev. Lett. 127, 108002

Thin elastic films can spontaneously attach to liquid interfaces, offering a platform for tailoring their physical, chemical, and optical properties. Current understanding of the elastocapillarity of thin films is based primarily on studies of planar sheets. We show that curved shells can be used to manipulate interfaces in qualitatively different ways. We elucidate a regime where an ultrathin shell with vanishing bending rigidity imposes its own rest shape on a liquid surface, using experiment and theory. Conceptually, the pressure across the interface "inflates" the shell into its original shape. The setup is amenable to optical applications as the shell is transparent, free of wrinkles, and may be manufactured over a range of curvatures.


See also...

Adaptive strategies in Kelly’s horse races model

We formulate an adaptive version of Kelly‚Äôs horse model in which the gambler learns from past race results using Bayesian inference. We (...) 

> More...

Dramatic Effect of Water Structure on Hydration Forces and the Electrical Double Layer

Forces between hydrophilic surfaces mediated by water are important in various systems from lipid membranes and solid surfaces to colloids and (...) 

> More...