 Hence, these detectors produce the highest possible signal-to-noise-ratio at the lowest possible accelerating voltage, because the BSE do not dissipate any energy in an aluminium coating used for the vacuum SEM.As a result, specimens can be examined faster and more easily, avoiding complex and time-consuming preparation methods, without modifying the natural surface or creating artifacts by the preceding preparation work, or the vacuum of the SEM.Gas/liquid/solid interactions can be studied dynamically in situ and in real time, or recorded for post processing.