Low-voltage_electron_microscopy
A Low-voltage electron microscope (LVEM) is an electron microscope which operates at accelerating voltages of a few kiloelectronvolts (keV) or less. Traditional electron microscopes use accelerating voltages in the range of 10-1000 keV.
Low voltage imaging in transmitted electrons is possible in many new scanning electron detectors.
A low cost alternative is a dedicated tabletop low voltage transmission electron microscope.[1] While its architecture is very similar to a conventional transmission electron microscope, it has a few key differences that enable it to take advantage of a 5 keV electron source, but trading off many advantages of higher voltage operations, including higher resolution, the possibility of X-ray microanalysis and EELS, etc. Recently a new low voltage transmission electron microscope has been introduced that operates at variable voltage ranges between 6–25 kV.[2]