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.Comment: 6 pages, 5 figures. Accepted for publication in World Journal of
Condensed Matter Physic