  The video exhibits experimental qualitative and quantitative results of
water/glycerol (50%/50% by mass) droplet impact on two types of micro-patterned
superhydrophobic surfaces. The two types of surfaces used were 80% cavity
fraction ribs and posts with a periodic spacing of 40 {\mu}m and 32 {\mu}m,
respectively. All surfaces were manufactured through photolithography. The
impact Weber number is used as the dynamic parameter to compare splash and
rebound behaviors between the two types of surfaces. While droplets exhibit
similar dynamics at low Weber numbers, rebound jet speed (normalized by droplet
impact speed) is notably higher on posts than ribs for all Weber numbers tested
here (5<We<900). At elevated Weber numbers, droplets splash peripherally. These
side droplets created at splash are referred to as satellite droplets. Top view
videos show the significant difference in splashing behavior for the two
surface types. On ribs, satellite droplet formation consistently prefers a path
60{\deg} from the ribs longitudinal direction. This behavior prevails for Weber
numbers greater than 150, however, distinguished splashing does not occur for
We > 265. On posts, satellite droplets also follow a specific path but in a
different orientation. Satellite droplets form in locations aligned with the
post lattice structure. This behavior is observed for 600 < We < 750. Jet
rebound exhibits an interesting phenomenon on ribs under certain conditions.
Due to the uneven shear distribution on the retracting droplet due to the
surface anisotropy, two jets form at rebound and are referred to as two-pronged
jets. This behavior occurs for 115 < We < 265 on ribs. Two-pronged jets are
also observed on posts but are less coherent and less repetitive. This behavior
was observed at around 500 < We < 600.
