The invention contemplates DRAM and field emission devices utilizing {TAIL ~ such layer} and {HEAD ~ alternate layers} 
The invention contemplates DRAM and field emission devices utilizing { TAIL ~ such layer } and { HEAD ~ alternate layers }
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD