Materials science

Conical surface

Airflow

Range (aeronautics)

Necking

Inhalation

Aerosolization

Thermodynamics

Physics

Nanotechnology

Anatomy

Composite material

Medicine

Mechanics

Volume (thermodynamics)

Colloids and Interface Science Communications

The ability of uphill droplet transport on a superhydrophobic surface incline using airflow was demonstrated. Analytical equations were found to describe the droplet volume at detachment at various inclination angles for the range of physical parameters applied. A pinching off behavior with necking prior to detachment was observed in which a constant time to rupture of 3.2 × 10− 2 s from a neck thickness of 1 × 10− 3 m was found regardless of the inclination angle used. The approach provided rapid uphill translation of 33 droplets per second and incurs limited aerosolization due to the small forces in action.

Uphill airflow transport of drops on superhydrophobic inclines