Figure 4

(Color) STM images of the hematite (001) surface, all taken during one imaging session within a 3-h period using one tip. All images were taken at a setpoint current of 500 pA, and all are displayed with a color scale of 0.3 nm. Top row (mV): -800, -700, -600, -500, -300, -100. Bottom row (mV): 100, 200, 300, 400, 600, 800. All images are 20 × 20 nm.

Eggleston et al. Geochemical Transactions 2004 5:33 doi:10.1186/1467-4866-5-33

Figure 4.