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. 2015 Mar 11;5:8939. doi: 10.1038/srep08939

Figure 2. Schematic showing the fabrication of SnO2-rGO monolayer-ordered porous film gas sensor.

Figure 2

(a) Transferring the colloidal monolayer from the glass substrate to the precursor solution; (b) irradiating the colloidal monolayer on solution with UV; (c) picking up the monolayer with a ceramic tube; (d) further irradiating the colloidal monolayer on the tube; (e) the final SnO2-rGO composite.