Figure 1

Scanning electron microscopy (SEM) images.
(a) the hierarchical nanostructured truncated microcone surface, (b) an individual nanostructured truncated microcone and (c) a high-magnification view of the nanostructures.

Scanning electron microscopy (SEM) images.
(a) the hierarchical nanostructured truncated microcone surface, (b) an individual nanostructured truncated microcone and (c) a high-magnification view of the nanostructures.