Fig. 9
From: The Role of Growth Directors in Controlling the Morphology of Hematite Nanorods
Topography (left-hand side) and PiFM intensity maps of three nanoparticles synthesized under different conditions. The frequencies at which the intensity maps were recorded are indicated on the images. a–c A 1,2-diaminopropane-directed particle synthesized at 160 °C and therefore still in the process of forming the anisotropic rods. d, e A particle synthesized in the presence of 2.5x10−3 M phosphate solution and aged for 48 h. h, g A particle synthesized in the presence of 6 × 10−3 M phosphate solution and aged for 72 h. The spectra in Fig. 10 were recorded at the points indicated by crosses on the topographic image