Abstract

Abstract Synchrotron X-ray PhotoElectron Emission Microscopy (X-PEEM) is a useful tool to investigate the microchemical composition of a variety of different samples, including cells in culture, tissue sections, magnetic material, bacteria, rocks, materials science, tribology and archaeology specimens. The MEPHISTO X-PEEM, installed at the Wisconsin Synchrotron Radiation Center, reached a peak resolution of 20 nm, has been extensively used for the last 4 years to explore all of the above systems. The experiments reported here are some of the most unusual ones for this technique: ZnS precipitating bacteria, Mn and Fe oxide rocks and archaeological coins. The microchemistry of each one of these samples delivered new results.

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