{HEAD ~ The gate structure} 120 may include a buffer layer , a dielectric layer 122 and {TAIL ~ a gate layer} 124 
{ HEAD ~ The gate structure } 120 may include a buffer layer , a dielectric layer 122 and { TAIL ~ a gate layer } 124
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH