wherein the graphene extending in {TAIL ~ a network form} from the junction is between {HEAD ~ the fine catalytic metal particles} 
wherein the graphene extending in { TAIL ~ a network form } from the junction is between { HEAD ~ the fine catalytic metal particles }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD