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