Multi Graphene Growth on Lead Pencil Drawn Sliver-Halide Print Paper Irradiated by Scanning Femtosecond Laser

A variety of paper were drawn by lead pencil with the grade between 4H through 10B. Raman spectroscopy verified both G and D peaks on all the drawing on PC print paper, PC photo paper, kent paper and paper for silver halide print. After irradiation of scanning femtosecond laser, silver halide paper drawn with 10B lead pencil remained surface flatness compared to the other papers. Raman spectroscopy on silver print paper showed a large G peak with less intensity of D peak. After irradiation of scanning femtosecond laser on silver halide paper drawn by 10B lead pencil, Raman spectroscopy showed large G peak and less intensity of D peak together with 2D peak around 2,700 /cm corresponding to the existence of multi graphene.