schottky emission
71Électron rétrodiffusé — Les électrons rétrodiffusés (back scattered electrons en anglais) sont des électrons résultant de l impact d un faisceau d électrons dit primaire et d un échantillon. Les électrons primaires sont entrés en collision avec des noyaux d’atomes de… …
72semiconductor device — ▪ electronics Introduction electronic circuit component made from a material that is neither a good conductor nor a good insulator (hence semiconductor). Such devices have found wide applications because of their compactness, reliability,… …
73Nantenna — Figure 1. Spectral irradiance of wavelengths in the solar spectrum. The red shaded area shows the irradiance at sea level. There is less irradiance at sea level due to absorption of light by the atmosphere. A nantenna (nanoantenna) is a… …
74CRYOLOGIE - Cryophysique — La température est l’un des facteurs les plus importants en physique, mais le milieu terrestre n’en offre qu’une ambiance aux limites restreintes. Dès la seconde moitié du XXe siècle, après avoir dépassé le stade de la liquéfaction de tous les… …
75Elektronenröhre — Eine Elektronenröhre ist ein elektronisches Bauelement, das aus einem evakuierten oder gasgefüllten Kolben aus Glas, Stahl oder Keramik besteht, in den mehrere Elektroden, mindestens eine beheizte Kathode und eine Anode, eingelassen und von außen …
76Germanium — (pronEng|dʒɚˈmeɪniəm) is a chemical element with the symbol Ge and atomic number 32. It is a lustrous, hard, silver white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. Germanium has five naturally… …
77Max Planck — Planck redirects here. For other uses, see Planck (disambiguation). Max Planck Born April 23, 1858( …
78Semiconductor device — Semiconductor devices are electronic components that exploit the electronic properties of semiconductor materials, principally silicon, germanium, and gallium arsenide. Semiconductor devices have replaced thermionic devices (vacuum tubes) in most …
79Spintronics — (a neologism meaning spin transport electronics [1][2]), also known as magnetoelectronics, is an emerging technology that exploits both the intrinsic spin of the electron and its associated magnetic moment, in addition to its fundamental… …
80Tetrode — A tetrode is an electronic device having four active electrodes. The term most commonly applies to a two grid vacuum tube. It has the three electrodes of a triode and an additional screen grid which significantly changes its behaviour. Grids The… …
