Fig. 10.
a Schematic representation of charge transfer in between graphene and PS bead under light illumination. The electric potential and static forces on adsorbed NO2 molecules on graphene/PS hybrid under b dark condition and c light illumination. Reproduced with permission [93]. Copyright 2019, American Chemical Society. d Schematic illustration of gasochromic-Pd-WO3/graphene/Si tandem structure of hydrogen sensor. e The transient gas response of the sensor to H2 gas under light illumination. Reproduced with permission [102]. Copyright 2018, Elsevier