Figure 4
From: Quasi-radial growth of metal tube on si nanowires template
SEM images of Si nanowires deposited with Au for 5 min. (a) Low magnification image showing the morphologies of the whole wires. (b-d) High magnification SEM images showing in detail the morphologies of the top, middle, and root part of a single nanowire, respectively. The rectangles in (a) enclose the regions which are magnified into (b-d).