Speaker
Bauyrzhan Primkulov
(Yale University)
Description
The size of a pendant drop detaching from a capillary is classically set by the balance between gravity and surface tension, as described by Tate’s law, implying only a weak dependence on nozzle size. We show that purely geometric confinement provides a simple and robust means to tune the detachment volume well below this classical limit. By placing a capillary between two superhydrophobic plates forming a shallow wedge, we demonstrate experimentally that drops detach at significantly reduced volumes. A scaling argument reveals that the wedge induces a capillary pressure gradient that assists gravity, yielding a simple relation between drop volume and confinement geometry that collapses all measurements.
| Country | United States |
|---|---|
| Acceptance of the Terms & Conditions | Click here to agree |
Author
Bauyrzhan Primkulov
(Yale University)
