An example system may include a processor, a light source, a mask, {TAIL ~ a substrate}, {HEAD ~ a photoresist layer}, and a graphene layer 
An example system may include a processor , a light source , a mask , { TAIL ~ a substrate } , { HEAD ~ a photoresist layer } , and a graphene layer
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH