Deviation from Regular Shape in the Early Stages of Formation of Strain-Driven 3D InGaAs/GaAs Micro/Nanotubes

Figure 6

High-resolution and high-magnification SEM images of the μtube nanowalls for structures with (a) 1 folding and (b) 3 foldings. The experimentally measured thickness of the nanowalls is  nm.

(a)

(b)