A laser (purple) is powerfully amplified by highly polished mirrors and focused on the electron beam (blue) to shift its phase and increase the cryo-EM microscope’s contrast, allowing biologists to ...

Electron microscopes are used wherever particularly small details need to be imaged. But from a strictly physical point of view, every electron in a conventional electron microscope represents a ...

An EM system composed of a pulsed electron source, a fast camera, a staged pumping vacuum system, and an aberration corrector has been developed by a team led by Professor Chen Fu-rong, Chair ...

It’s a problem that few of us will ever face, but if you ever have to calibrate your scanning electron microscope, you’ll need a resolution target with a high contrast under an electron beam. This ...

A complete, ready-to-teach GCSE Biology lesson covering microscopes, magnification and calculating image size. Designed to develop students’ understanding of how microscopes are used to observe cells ...

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 1950s, scanning electron microscopes ...