There are several factors that can lead to the collapse of micro posts: collapse due to weight, due to {HEAD ~ adhesion forces} between the posts and {TAIL ~ the base surface}, and due to lateral adhesion between the posts 
between
There are several factors that can lead to the collapse of micro posts : collapse due to weight , due to { HEAD ~ adhesion forces } between the posts and { TAIL ~ the base surface } , and due to lateral adhesion between the posts
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH