797082.fig.003a
(a)
797082.fig.003b
(b)
797082.fig.003c
(c)
797082.fig.003d
(d)
Figure 3: ((a), (b)) FESEM image of the 3D hierarchical framework with and for 30 min. ((c), (d)) FESEM image of the scrolling structures on the submicrometer ribbons with and for 15 min at 40°C.