Field emitters are electronic components capable of pulling electrons from a solid by the exclusive action of a strong electric field. They are made by micromechanizing a conductor, usually molybdenum or silicon doped conveniently, and by thin layer techniques. Small 'wells' are excavated in the center of which leaves a tip that rises to the level of the surface. This is coated with an isolated electrode, so that between the ends the tips and the edges of the electrodes establish a very high electric field, capable of pulling electrons from the tip. The diameter of each well is a micrometer. Properties Applications
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