LIG is produced by raster scanning of a CO2 laser source over a precursor substrate. This process has been optimized to produce high-quality graphitic material, with low sheet resistance, high surface area, and controlled surface morphology and dimensions . Redeposition of graphic material and lateral growth of LIG occurs as a side-effect of the laser graphitization process. While these effects may limit the ultimate lateral critical dimensions of LIG devices, they also offer a route to promote local aggregation of SnO nanoflowers and enable the formation of hybrid LIG-nanoflower conducting networks with minimal SnO nanoflower mass loading, while maintaining a gap-like sensor geometry. humidity). The system is allowed to equilibrate for 2 minutes, followed by a 4-minute "blank" period.