Excited Sessile Drops Dance Harmonically

Abstract

In our fluid dynamics video, we demonstrate our method of visualizing and identifying various mode shapes of mechanically oscillated sessile drops. By placing metal mesh under an oscillating drop and projecting light from below, the drop's shape is visualized by the visually deformed mesh pattern seen in the top view. The observed modes are subsequently identified by their number of layers and sectors. An alternative identification associates them with spherical harmonics, as demonstrated in the tutorial. Clips of various observed modes are presented, followed by a 10-second quiz of mode identification.

arXiv comment(1) Latex file of 2-page introduction article for (2) two same videos of different resolutions: DanceDropHiResol.mp4, the higher-resolution version and DanceDropLoiResol.mp4, the lower-resolution version the videos are slightly revised (and hence the replacement of videos)

References in corpus (3)

• Stick-slip dynamics of an oscillated sessile drop
• Resonant and rolling droplet
• Vibrations of a diamagnetically levitated water droplet

Cited by in corpus (8)

• Directional motion of vibrated sessile drops : a quantitative study
• Harmonic and subharmonic waves on the surface of a vibrated liquid drop
• Shape modes and jet formation on ultrasound-driven wall-attached bubbles
• Observation of the resonance frequencies of a stable torus of fluid
• Total-internal-reflection deflectometry for measuring small deflections of a fluid surface
• Steiner triangular drop dynamics
• Phase Transitions of Oscillating Droplets on Horizontally Vibrating Substrates
• Natural oscillations of a sessile drop on flat surfaces with mobile contact lines