Аннотация
This paper reviews the most recent methodological advances in the field of biological imaging using dynamic secondary ion mass spectrometry (SIMS). After a short reminder of the basic principle of SIMS imaging, the latest high-resolution dynamic SIMS equipment is briefly described. This new ion nanoprobe (CAMECA NanoSIMS 50™) has a lateral resolution of less than 50 nm with primary Cs + ion, the ability to detect simultaneously 5 different ions from the same micro-volume and a very good transmission even at high mass resolution (60\% at M /Δ M = 5000). Basic considerations related to sample preparation, mass resolution and primary ion implantation are given. The decisive capability of this new instrument, and more generally of high-resolution dynamic SIMS imaging in biology, are illustrated with the most recent examples of utilization 2 .
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