What is an Environmental Scanning Electron Microscope (ESEM)?
An Environmental Scanning Electron Microscope (ESEM) is a type of electron microscope that allows for the examination of materials in their natural state. Unlike conventional scanning electron microscopes (SEMs) that require samples to be in a vacuum state, ESEMs can operate under variable pressure conditions, making it possible to study wet, oily, and non-conductive samples without extensive sample preparation.