Although it is only one atom thick and unprotected from the immediate environment, {HEAD ~ graphene} exhibits {TAIL ~ high crystal quality} and ballistic transport at submicron distances 
Although it is only one atom thick and unprotected from the immediate environment , { HEAD ~ graphene } exhibits { TAIL ~ high crystal quality } and ballistic transport at submicron distances
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH