Figure 6
From: Direct and accurate measurement of size dependent wetting behaviors for sessile water droplets
Size-dependent wetting of droplets on the Ag and Al substrates.
(a,c) The contact angle (θ) of the droplets as a function of RLSV on Ag and Al. Cryo-SEM images of sessile water droplets (tilted-view) and an optical image of the macroscopic droplet (side-view) are displayed in the a and c insets. (b,d) Plot of cos(θ) versus 1/RLSV of the droplets on Ag and Al, respectively.
