The mucus clearance system is the dominant mechanical host defense system of the human
lung. Mucus is cleared from the lung by cilia and airflow, including both two-phase gas-liquid …

Mucus covers all wet epithelia and acts as a protective barrier. In the airways of the lungs,
the viscoelastic mucus meshwork entraps and clears inhaled materials and efficiently …

Lateral momentum conservation is typically kept in a non-absorptive rotationally symmetric
system through mirror symmetry via Noether's theorem when illuminated by a homogeneous …

Marangoni spreading on thin films is widely observed in nature and applied in industry. It
has serious implications for airway drug delivery, especially in surfactant displacement …

Microswarms have shown great potential in biomedical applications at small scales due to
their features of wireless actuation and collective microrobotic behaviors. However …

Understanding the fundamentals of surface transport on thin viscous films has important
application in pulmonary drug delivery. The human lung contains a large-area interface …

The interfacial flow and mass transfer of multicomponent droplets remain an unsolved basic
problem, although multicomponent droplets are widely used in droplet microfluidics, fine …

When an insoluble surfactant is deposited on the surface of a thin fluid film, stresses induced
by surface tension gradients drive Marangoni spreading across the subphase surface. The …

Abstract Hypothesis Surfactant-driven Marangoni flow on liquid films is predicted to depend
on subphase depth and initial surface tension difference between the subphase and …

Abstract Hypothesis Surfactant-driven Marangoni spreading generates a fluid flow
characterized by an outwardly moving “Marangoni ridge”. Spreading on thin and/or high …