Figure 5
From: Evaporation and deposition of inclined colloidal droplets
Contact angle influence on capillary flow velocity. (a) The temporal evolution of the measured contact angle for \(\phi =0^{\circ }\) and \(90^{\circ }\). (b) Theoretically obtained capillary flow velocity for \(\phi =0^{\circ }\) and \(90^{\circ }\). The black circles come from the non-inclined droplet, and red and blue circles are from the top and bottom contact point of the \(90^{\circ }\) inclined droplet, respectively. This result suggests that the contact angle is crucial to determine the evaporation rate, leading to a wider deposit ring on the top section due to a dominant capillary flow.
