Multilayer Graphene Synthesized by CVD Using Liquid Hexane as the Carbon   Precursor
  We produce multilayer graphene by the Chemical Vapor Deposition (CVD) method at atmospheric pressure and 1000 {\deg}C, using flexible copper substrates as catalyst and liquid hexane as the source of carbon. We designed an optical device to measure the transmittance of the carbon films; with this information we calculate that the approximate number of layers is 11. 
C. Bautista and D. Mendoza
cond-mat.mes-hall