Information | |
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has gloss | eng: Low-energy electron microscopy, or LEEM, is an analytical surface science technique invented by Ernst Bauer in 1962, however, not fully developed (by Ernst Bauer and Wolfgang Telieps) until 1985. LEEM is a technique used by surface scientists image atomically clean surfaces, atom-surface interactions, and thin (crystalline) films. In LEEM, high-energy electrons (15-20 keV) are emitted from an electron gun, focused using a set of condenser optics, and sent through a magnetic beam deflector (usually 60˚ or 90˚). The “fast” electrons travel through an objective lens and begin decelerating to low energies (1-100 eV) near the sample surface because the sample is held at a potential near that of the gun. The low-energy electrons are now termed “surface-sensitive” and the near-surface sampling depth can be varied by tuning the energy of the incident electrons (difference between the sample and gun potentials minus the work functions of the sample and system). |
lexicalization | eng: Low energy electron microscopy |
lexicalization | eng: Low-Energy Electron Microscopy |
instance of | (noun) magnifier of the image of small objects; "the invention of the microscope led to the discovery of the cell" microscope |
Meaning | |
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German | |
has gloss | deu: Das niederenergetische Elektronenmikroskop ist ein Gerät zur Untersuchung von Oberflächenstrukturen mittels Elektronen, das von Ernst Bauer schon 1962 erfunden wurde, aber erst 1985 vollständig entwickelt gewesen ist. Mit seiner Hilfe können atomar glatte Oberflächen, Atom-Oberflächen-Wechselwirkungen und dünne (kristalline) Filme mikroskopiert werden. |
lexicalization | deu: Niederenergetisches Elektronenmikroskop |
Turkish | |
has gloss | tur: Düşük enerjili elektron mikroskobu, veya LEEM (Low Energy Electron Microscope), maddelerin yüzeylerini mezoskopik boyutlarda incelemeye yarayan bir elektron mikroskobu çesididir. Elastik olarak yüzeyden geri saçılan düşük enerjili (0-500 elektronvolt) elektronların görüntülenmesi üzerine kuruludur. Yüzeylerin yapısal ve kimyasal özelliklerinin 10 nanometreye varan bir çözünürlükte incelenmesini sağlar. İnce filimler, katalitik yüzeyler, nanoteknolojik sistemler ile ilgili çalışmalardaki öneminin ötesinde, bu mikroskoptaki yüksek sinyal seviyeleri yüzeydeki dinamik degişimleri video hızında canlı olarak takip etmeye olanak tanır. |
lexicalization | tur: Düşük enerjili elektron mikroskobu |
Media | |
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media:img | Ag rods on Si.png |
media:img | Cr(001).png |
media:img | EwaldsphereLEED.png |
media:img | LEED Lens and Ray Diagram.png |
media:img | LEEM palladium on tungsten.jpg |
media:img | UIUC LEEM.jpg |
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