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Electron-beam-induced deposition (EBID) is a process of decomposing gaseous molecules by an electron beam leading to deposition of non-volatile fragments onto a nearby substrate. The electron beam is usually provided by a scanning electron microscope , which results in high spatial accuracy (potentially below one nanometer) and the possibility ...
Electron-beam physical vapor deposition, or EBPVD, is a form of physical vapor deposition in which a target anode is bombarded with an electron beam given off by a charged tungsten filament under high vacuum. The electron beam causes atoms from the target to transform into the gaseous phase.
Electron-beam machining is a process in which high-velocity electrons are concentrated into a narrow beam with a very high planar power density. The beam cross-section is then focused and directed toward the work piece, creating heat and vaporizing the material. Electron-beam machining can be used to accurately cut or bore a wide variety of metals.
It uses a focused electron beam in a vacuum environment to create a molten pool on a metallic substrate. The surface of the substrate translates the beam while the metal wire is fed into the molten pool. The deposit solidifies immediately after the electron beam has passed, having sufficient structural strength to support itself.
The basic components of a typical electron-beam processing device include: [1] an electron gun (consisting of a cathode, grid, and anode), used to generate and accelerate the primary beam; and, a magnetic optical (focusing and deflection) system, used for controlling the way in which the electron beam impinges on the material being processed ...
Molecular beam epitaxy is an advanced form of thermal evaporation. In the electron-beam method, the source is heated by an electron beam with an energy up to 15 keV. In flash evaporation, a fine wire or powder of source material is fed continuously onto a hot ceramic or metallic bar, and evaporates on contact.
Topological insulators can be grown using different methods such as metal-organic chemical vapor deposition (MOCVD), [67] physical vapor deposition (PVD), [68] solvothermal synthesis, [69] sonochemical technique [70] and molecular beam epitaxy. Schematic of the components of a MBE system (MBE). [34] MBE has so far been the most common ...
Another approach is to use an electron beam to melt welding wire onto a surface to build up a part. [15] This is similar to the common 3D printing process of fused deposition modeling, but with metal, rather than plastics. With this process, an electron-beam gun provides the energy source used for melting metallic feedstock, which is typically ...
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