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Field electron emission, also known as field emission (FE) and electron field emission, is emission of electrons induced by an electrostatic field. The most common context is field emission from a solid surface into a vacuum .
In physics, electron emission is the ejection of an electron from the surface of matter, [1] or, ... emission of electrons induced by an electrostatic field; Devices
It was made by etching some material away to make a porous structure with a large surface area. As an electron emission point on an individual spike wears out, another is available to replace it, making the array more durable. [1] [2] A field emitter array (FEA) is a particular form of large-area field electron source. FEAs are prepared on a ...
Stimulated emission was a theoretical discovery by Albert Einstein within the framework of the old quantum theory, wherein the emission is described in terms of photons that are the quanta of the EM field. [5] [6] Stimulated emission can also occur in classical models, without reference to photons or quantum-mechanics.
Lothar [note 1] Wolfgang Nordheim (November 7, 1899, Munich – October 5, 1985, La Jolla, California) was a German-born Jewish American theoretical physicist.He was a pioneer in the applications of quantum mechanics to solid-state problems, such as thermionic emission, work function of metals, [1] field electron emission, rectification in metal-semiconductor contacts and electrical resistance ...
The Schottky effect or field enhanced thermionic emission is a phenomenon in condensed matter physics named after Walter H. Schottky. In electron emission devices, especially electron guns, the thermionic electron emitter will be biased negative relative to its surroundings. This creates an electric field of magnitude F at the
Classically, the electron would either transmit or reflect with 100% certainty, depending on its energy. In 1928 J. Robert Oppenheimer published two papers on field emission, i.e. the emission of electrons induced by strong electric fields.
In this regime, the combined effects of field-enhanced thermionic and field emission can be modeled by the Murphy-Good equation for thermo-field (T-F) emission. [35] At even higher fields, FN tunneling becomes the dominant electron emission mechanism, and the emitter operates in the so-called "cold field electron emission (CFE)" regime.