{HEAD ~ Light} can be applied through {TAIL ~ a mask} to the graphene layer, where the mask includes a pattern 
applied through
{ HEAD ~ Light } can be applied through { TAIL ~ a mask } to the graphene layer , where the mask includes a pattern
HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH