The sidewalls of the vias may then be coated with memristive metal oxide film, and {HEAD ~ the interior} may be filled with {TAIL ~ a metal core} 
The sidewalls of the vias may then be coated with memristive metal oxide film , and { HEAD ~ the interior } may be filled with { TAIL ~ a metal core }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL