Fig. 4
From: Mechanistic insights of enhanced spin polaron conduction in CuO through atomic doping

SEM images of a CuO and b Li-doped CuO used in this study (the scale bar in the lower right corner designates 1 μm)
From: Mechanistic insights of enhanced spin polaron conduction in CuO through atomic doping
SEM images of a CuO and b Li-doped CuO used in this study (the scale bar in the lower right corner designates 1 μm)