Figure 4
From: Direct and accurate measurement of size dependent wetting behaviors for sessile water droplets
Spherical water droplets.
Cryo-SEM images of sub-5-μm diameter water droplets on a Cu substrate (a: top view, b: tilted view). The tilted image (b) obviously shows that these droplets have a negligible contact area with the solid substrate (white arrows). Magnified images of 1.3-μm diameter droplets before (c) and after (d) FIB milling.
