Sessile liquid drops damp vibrating structures

In this study, we explore the vibration damping characteristics of singular liquid drops varying viscosity and surface tension resting on a millimetric cantilever. Cantilevers are displaced 0.6 mm at their free end, 6% length, allowed to vibrate freely. Such ringdown causes deform, or slosh, which dissipates kinetic energy via viscous dissipation within drop through contact line friction. Damping by sloshing is dependent viscosity, tension, size, location. A solid weight with same mass as experimental used compare against imposed liquids, thereby accounting for other sources. Neither most nor least studied greatest cantilever motion. Instead, intermediate strike effective balance internal dissipative capacity. Very thin cantilevers express more than one dominant frequency erratically, often shifting phase, presenting challenge quantification damping. Finally, introduce new dimensionless group aimed incorporating all salient variables our cantilever-drop system.