In {HEAD ~ one embodiment}, the dual layer dielectric stack includes a first dielectric layer that is planar and mechanically strong and the second dielectric layer can be patterned by photolithography to {TAIL ~ the required critical dimensions} 
In { HEAD ~ one embodiment } , the dual layer dielectric stack includes a first dielectric layer that is planar and mechanically strong and the second dielectric layer can be patterned by photolithography to { TAIL ~ the required critical dimensions }
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL