Passivation layers are formed and grow on {HEAD ~ the surfaces} of {TAIL ~ the walls} formed between the plurality of micro passageways, thereby forming the bodies 
of
Passivation layers are formed and grow on { HEAD ~ the surfaces } of { TAIL ~ the walls } formed between the plurality of micro passageways , thereby forming the bodies
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH