Details

Autor(en) / Beteiligte

• Jiang, Youhua
• Feng, Leyun
• O'Donnell, Allison
• Machado, Christian
• Choi, Wonjae
• Patankar, Neelesh A.
• Park, Kyoo-Chul

Titel

Coalescence-induced propulsion of droplets on a superhydrophilic wire

Ist Teil von

• Applied physics letters, 2022-12, Vol.121 (23)

Ort / Verlag

Melville: American Institute of Physics

Erscheinungsjahr

2022

Quelle

AIP Journals

Beschreibungen/Notizen

• Droplet transport on a cylindrical wire has applications in numerous fields such as fog collection, mist elimination, filtration, and oil/water separation. This work reports a droplet transport phenomenon on a superhydrophilic wire that shows a transient velocity powered not by the gradient of substrate geometry or wettability but primarily by the surface-to-kinetic energy transition that occurs along the axial direction upon coalescence. The transition efficiency is mainly limited by the viscous friction at the local liquid wedge, a relationship that a modified Ohnesorge number can capture.