Figure 6.

Water spreading on epoxy replica of moisture harvesting reptiles. A 5 µl droplet of water was applied to the epoxy replica of the medial back of the moisture harvesting species Phrynosoma cornutum. Similar to the situation on the native surface (see Figure 3), the water spreads at high velocity. The epoxy resin is not very wettable as can be seen when a 5 µl droplet is applied to the backside of the replica which exhibits an unstructured surface. The droplet stays perfectly constant forming a contact angle of about 80°.