The photocathode 100 can include a main body 101 made of a wide bandgap semiconductor material, a metal layer 103, and an alkali halide photocathode ejector 102. The body 101 can have a thickness of less than 100 nm, and the alkali halide photocathode 102 can have a thickness of less ...
A TEM has a lot in common with an ordinary optical microscope. You have to prepare a thin slice of the specimen quite carefully (it's a fairly laborious process) and sit it in a vacuum chamber in the middle of the machine. When you've done that, you fire an electron beam down ...
A distinction is made among electromechanical, electronic, and electron-beam switches. The simplest electromechanical switches are knife switches, commutators of electric machines, and sets of electromagnetic relays or electromechanical selectors. More complex switches are electronic devices assembled according ...
This "braking" action causes the electron to emit excess energy in the form of an X-ray photon. The high-impact collisions involved in X-ray production generate a lot of heat. A motor rotates the anode to keep it from melting (the electron beam isn't always focused on the same area)...
This "braking" action causes the electron to emit excess energy in the form of an X-ray photon. The high-impact collisions involved in X-ray production generate a lot of heat. A motor rotates the anode to keep it from melting (the electron beam isn't always focused on the same area)...
A protective 1 µm Pt layer has been deposited on top of the sample using an electron beam deposition method operated at a low voltage of 10 kV and low current of 1.6 nA, which protected the corroded surface during the entire milling process. Lift-out and sharpening methods using ...
An Arcam 3D printer at GE's Center for Additive Technologies Advancement. GE acquired a majority stake in Arcam last fall. The machine uses an electron beam, which is more powerful than laser. The beam enables the machines to print faster and fuse layers as thick at 100 microns...
In many ways, an electron microscope functions similarly to an optical scope except that, instead of visible light, a stream of electrons is used to illuminate the specimen. The electron beam is focused with magnetic lenses. Changes to the electron beam inside the specimen are recorded and an ...
Electron Microscopes– An electron model uses a beam of energetic electrons to examine specimens on a very fine scale. Learn more here including how they work, their history, the different types, and who uses them. Next we have reviews by brand: ...
In an oscilloscope, the electron beams work in the same fashion except that they brighten up the phosphors to form a graph. So when a line is displayed on the screen of an oscilloscope, it is being caused by an electron beam going up and down. In a traditional / analog oscilloscope, ...