491051.fig.001a
(a)
491051.fig.001b
(b)
491051.fig.001c
(c)
491051.fig.001d
(d)
491051.fig.001e
(e)
491051.fig.001f
(f)
491051.fig.001g
(g)
491051.fig.001h
(h)
Figure 1: SEM images of vanadium dioxide nanopowders with different W-doped concentration from 0 to 3 atom% (at the intervals of 0.5) (a–g). EDS pattern for 2 at% W-doped VO2 (h).