• Thumbnail for Field emission gun
    A field emission gun (FEG) is a type of electron gun in which a sharply pointed Müller-type[clarification needed] emitter: 87–128  is held at several kilovolts...
    3 KB (250 words) - 20:28, 17 March 2024
  • Field electron emission, also known as field emission (FE) and electron field emission, is emission of electrons induced by an electrostatic field. The...
    126 KB (16,075 words) - 00:38, 17 November 2024
  • Thumbnail for Field-emission display
    A field-emission display (FED) is a flat panel display technology that uses large-area field electron emission sources to provide electrons that strike...
    20 KB (2,560 words) - 22:20, 3 November 2024
  • Thumbnail for Electron gun
    Electron guns may be classified by the type of electric field generation (DC or RF), by emission mechanism (thermionic, photocathode, cold emission, plasmas...
    6 KB (705 words) - 13:28, 31 August 2024
  • Thumbnail for Tungsten
    regards to cost and availability, with some being radioactive as well. Field emission gun Tungsten oxide List of chemical elements name etymologies List of...
    83 KB (9,399 words) - 22:06, 18 November 2024
  • Thumbnail for Electron backscatter diffraction
    "Resolution and sensitivity of electron backscattered diffraction in a cold field emission gun SEM". Ultramicroscopy. Frontiers in Electron Microscopy in Materials...
    124 KB (13,682 words) - 12:50, 1 October 2024
  • Thumbnail for Thermionic emission
    electron emission specifically refers to emission of electrons and occurs when thermal energy overcomes the material's work function. After emission, an opposite...
    32 KB (3,566 words) - 13:04, 15 November 2024
  • Thumbnail for Transmission Electron Aberration-corrected Microscope Project
    and is operated remotely. The electron source is a Schottky type field emission gun with a relatively low energy spread of 0.8 eV at 300 keV. In order...
    7 KB (826 words) - 15:38, 31 August 2024
  • Thumbnail for Transmission electron microscopy
    of an emission source or cathode, which may be a tungsten filament, a lanthanum hexaboride (LaB6) single crystal or a field emission gun. The gun is connected...
    118 KB (15,058 words) - 13:31, 17 October 2024
  • Thumbnail for Schottky effect
    effect or field enhanced thermionic emission is a phenomenon in condensed matter physics named after Walter H. Schottky. In electron emission devices,...
    5 KB (586 words) - 10:08, 20 July 2024
  • Thumbnail for Scanning transmission electron microscopy
    1970s, when Albert Crewe at the University of Chicago developed the field emission gun and added a high-quality objective lens to create a modern STEM. He...
    37 KB (4,263 words) - 03:06, 21 September 2024
  • Thumbnail for Electron microscope
    enabled imaging of materials at the atomic scale. In the 1980s, the field emission gun became common for electron microscopes, improving the image quality...
    50 KB (5,678 words) - 04:26, 21 November 2024
  • accessible technique for the user of a standard SEM. In the meanwhile the field emission gun (FEG) had to be developed and integrated in the commercial SEM in...
    9 KB (1,140 words) - 05:38, 11 December 2023
  • Thumbnail for Scanning electron microscope
    needed] Low-voltage SEM is typically conducted in an instrument with a field emission guns (FEG) which is capable of producing high primary electron brightness...
    67 KB (8,141 words) - 21:07, 20 October 2024
  • field enhanced thermionic emission Field electron emission, emission of electrons induced by an electrostatic field An electron gun or electron emitter, is...
    2 KB (191 words) - 04:17, 13 March 2024
  • Thumbnail for Synchrotron radiation
    a magnetic field is called cyclotron emission. For particles in the mildly relativistic range (≈85% of the speed of light), the emission is termed gyro-synchrotron...
    21 KB (2,447 words) - 08:16, 22 November 2024
  • anti-inflammatory peptide, and feG, its D-isomeric form Field emission gun, a type of electron gun Ferroelectric generator This disambiguation page lists...
    1 KB (165 words) - 01:39, 14 October 2023
  • a brighter electron source in the microscope, positing that cold field emission guns would be feasible. Through this and other iterations, Crewe was able...
    18 KB (1,986 words) - 04:26, 24 September 2024
  • Thumbnail for 475 °C embrittlement
    nanophase, while nickel partitions to the chromium-rich nanophase. Using Field Emission Gun Transmission Electron Microscope FEG-TEM, the nanometre-scaled modulated...
    38 KB (3,675 words) - 15:36, 16 June 2024
  • Thumbnail for Convergent beam electron diffraction
    introduced in 1939 by Kossel and Möllenstedt. The development of the Field Emission Gun (FEG) in the 1970s, the Scanning Transmission Electron Microscopy...
    23 KB (2,702 words) - 15:12, 8 July 2024
  • Thumbnail for Greenhouse gas emissions
    Greenhouse gas (GHG) emissions from human activities intensify the greenhouse effect. This contributes to climate change. Carbon dioxide (CO2), from burning...
    147 KB (16,069 words) - 03:28, 11 November 2024
  • Increasing methane emissions are a major contributor to the rising concentration of greenhouse gases in Earth's atmosphere, and are responsible for up...
    88 KB (9,582 words) - 17:22, 6 November 2024
  • Thumbnail for Electrodynamic tether
    potential of the electron gun is large enough. In this case, the emission current is regulated by the thermionic emission process, given by the Richardson...
    69 KB (9,669 words) - 17:00, 9 June 2024
  • Thumbnail for Mössbauer spectroscopy
    spectroscopy. Just as a gun recoils when a bullet is fired, conservation of momentum requires a nucleus (such as in a gas) to recoil during emission or absorption...
    33 KB (3,703 words) - 01:18, 17 November 2024
  • either through heating (thermionic emission) or in an electric field that is sufficient to cause field electron emission. Once initiated, a vacuum arc can...
    3 KB (328 words) - 07:29, 17 November 2024
  • Thumbnail for Artillery of World War I
    incorporation into the 75 mm field gun. Before this invention, each time an artillery weapon was fired, the entire gun would be pushed backwards by the...
    15 KB (1,996 words) - 14:22, 9 September 2024
  • Thumbnail for Weak-beam dark-field microscopy
    for the electron source and image processing. More specifically, field emission guns (FEGs) and the reduction of energy variation in the electron source...
    23 KB (3,491 words) - 16:10, 17 October 2023
  • Thumbnail for Electron-beam welding
    gained by thermo-emission from a hot metal strap (or wire). They are then accelerated and formed into a narrow beam by an electric field produced by three...
    22 KB (2,948 words) - 00:26, 15 October 2024
  • Thumbnail for Wehnelt cylinder
    pointed) tip. This bias voltage creates a repulsive electrostatic field that suppresses emission of electrons from most areas of the cathode. The emitter tip...
    4 KB (501 words) - 20:01, 8 January 2024
  • Thumbnail for Secondary ion mass spectrometry
    J. (1962). "Optique corpusculaire—premiers essais de microanalyse par emission ionique secondaire". Microscopie. 1: 395–399. Wittmaack, K. (1975). "Pre-equilibrium...
    18 KB (2,250 words) - 18:36, 29 August 2024