Figure 7.

Effects of cooling rates on sheet resistance and optical transmittance at the 550-nm wavelength of graphene-based TFC films. The inset shows a digital camera image of transferred graphene (left) and a demonstration of the illuminator (right)

Lee et al. Nanoscale Research Letters 2010 5:1768-1773   doi:10.1007/s11671-010-9708-9