We estimated the crystallite size of our pyrolized materials using the Scherrer equation . This analysis revealed that by increasing the laser power from 2.4 to 4.8 W, the crystallite lateral size, La, extracted from the (10) peak, grows from 3.5±0.4 to 4.6±0.1 nm. On the other hand, the crystallite thickness Lc, extracted from the (002) peak, reduces from 3.8±0.4 to 1.32±0.04 nm, corresponding to 10±1 and 3.6±0.1 stacking layers of graphene, respectively (Fig ). Similar crystallite parameters could be attained in wood samples pyrolized in a furnace at between 1000 and 2000 °C . Furthermore, upon increasing the laser power, the average interlayer distance informed by the d-spacing of the (002) peak, d002, gradually decreases from 0.4 nm to 0.37 nm, approaching that for AB-stacking graphite (0.335 nm), in spite of its turbostratic nature. The graphenic crystallites appear to grow laterally and interconnect, resulting in 7-fold drop in macroscopic electrical resistance. Furthermore, the small crystallite sizes, combined with their reduced thickness (a few layers), offer edge-rich graphene for efficient electrochemical detection .