Figure 9
From: Cation-Induced Coiling of Vanadium Pentoxide Nanobelts
SEM images of V2O5·x H2O microloops by coiling of nanobelts in the presence of Zn2+. a Low-magnification SEM images of the samples. b–e High-magnification SEM images of the microtube-like loops showing the hollow cavity and coiled nanobelts. Scale bars correspond to 20 μm (a), 1 μm (b–d), and 500 nm (e)