Fig. 2From: The Role of Growth Directors in Controlling the Morphology of Hematite NanorodsGraph of hematite nanoparticle aspect ratio as a function of potassium and sodium phosphate concentration. The figure demonstrates that the difference between the two cations is only just outside of experimental error and the concentration limits of the approach are very similar. The dashed line is drawn to guide the eye. Errors were calculated from repeated measurements of ~ 100 nanoparticles for each pointBack to article page