Deformation Dynamics During Complete Rebounding During Impact of a Falling Droplet of Varied Surface Tension on a Sessile Drop

The rebounding dynamics of a falling droplet of varied surface tension (0.25 and 1 CMC) impacting a sessile water droplet sitting on a glass substrate is captured experimentally. The deformation of the impacting droplet as well as the sessile droplet is evaluated and the results are plotted against time. Also, the dynamic contact angle of both the impacting and the sessile drop is extracted and plotted to see the contact line dynamics. The deformations plot reveals that the lower surface tension droplet (1 CMC) deforms faster than the droplet of relatively higher surface tension (0.25 CMC). The contact angle plot reveals that it reaches a maximum value at the onset of the rebounding stage.