Boron doped silicon {HEAD ~ thin films} can be formed on {TAIL ~ the substrate} in this manner 
formed on
Boron doped silicon { HEAD ~ thin films } can be formed on { TAIL ~ the substrate } in this manner
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH