Insulating single or double layer 404 is then etched to expose {HEAD ~ contact areas} 408, leaving {TAIL ~ the structure} of FIG 4D 
leaving
Insulating single or double layer 404 is then etched to expose { HEAD ~ contact areas } 408 , leaving { TAIL ~ the structure } of FIG 4D
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH