(b) Electron diffraction patterns obtained from amorphous Zr-Ni alloy with different beam sizes. The pattern with 100-nm beam size shows typical halo rings, indicating that the region includes atoms ...

The path of the electron beam may be varied so that the beam passes through one of the foils or misses both. The aluminum is polycrystalline so that the diffraction pattern consists of rings. The ...

Scientists at MIT have built a new type of electron gun capable of imaging so quickly, it effectively films an X-ray movie. We can't wait to see Peter Jackson's Lord of the Rings epic filmed in ...