Fig. 2.

SEM images of In₂Se₃ nanowires which were grown at a 550 °C, b 600 °C, and c 650 °C, respectively; the scale bars of the inset images (a–c) are 100 nm. d In₂Se₃ nanowires are grown with the precursor and growth temperature at 850 and 600 °C, respectively