The method 13 wherein {HEAD ~ the precursor} comprises silicon and oxygen, and wherein the desired material is {TAIL ~ silicon dioxide} 
The method 13 wherein { HEAD ~ the precursor } comprises silicon and oxygen , and wherein the desired material is { TAIL ~ silicon dioxide }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL