Schematic of reduction of GO by laser. The black circuit represents reduced GO.
(a) Optical image of patterned GO lines by laser, (b) step profile of image (a), and (c) AFM 3D topography of the laser-irradiated region.
(a) Unpolarized Raman spectra of un-reduced GO compared with spectra of laser-reduced GO with various energy densities (60-100 mJ/cm2), and (b) Raman spectra from reduced GO with higher energy densities.
UV/Vis transmission spectra of reduced-GO film on different spots within a sample. The transmittance is 83% at the most sensitive human eye wavelength 555 nm.
Resistance of reduced GO as a function of laser energy density. The graph is divided into three regimes with respect to the resistance responding to laser energy density.
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