SEM stands for scanning electron microscope. The SEM is a microscope that uses electrons instead of light to form an image. Since their development in the early 1950's, scanning electron microscopes ...

But two observations from the ultrafast electron microscope changed this understanding ... This study demonstrates a new ...

An extremely sharp conducting tip, often made of tungsten or platinum-iridium, is brought within a few angstroms to the sample surface. A bias voltage applied between the tip and the sample causes ...

The limit of resolution of the transmission electron microscope is now less than 1 nm. The TEM has revealed structures in cells that are not visible with the light microscope.

The limit of resolution of the transmission electron microscope is now less than 1 nm. The TEM has revealed structures in cells that are not visible with the light microscope. We can now study ...