The complementary microstructures may be superimposed in {TAIL ~ a controlled manner} by {HEAD ~ operation} of micro alignment means also formed in the foldable substrate by an etching or similar process 
The complementary microstructures may be superimposed in { TAIL ~ a controlled manner } by { HEAD ~ operation } of micro alignment means also formed in the foldable substrate by an etching or similar process
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH