It's always interesting to see scanning probe electrochemistry, a branch of microscopy allowing electrochemical characteristics to be measured locally, being used in unexpected ways. For example Scanning Kelvin Probe which allows a measure of sample work function is often used in corrosion but has also been used to measure latent fingerprints and even meteorites. Scanning Electrochemical Microscopy (SECM) has widely been used in fields from biology to batteries, but has been used in the art world to measure paint pigments. As a final example Scanning Vibrating Electrode Technique (SVET), also known as vibrating probe, is used in corrosion and biology, but has recently been used to measure photoconductivity in semiconductors.

What other unexpected uses for scanning probe electrochemistry have you seen? Or are you using these techniques in unexpected ways yourself?