Kroemer, Herbert

Kroemer, Herbert
born Aug. 25, 1928, Weimar, Ger.

German physicist.

He received a Ph.D. (1952) from Georg August University in Göttingen and later moved to the U.S., where he taught at several institutions. In 1957 he carried out theoretical calculations showing that a heterostructure transistor, which is made from several materials, would be superior to a conventional transistor, which is made from only one kind of material. His theory was later confirmed and led to the development of numerous electronic components that had a significant influence on communications technology and computers. He shared the 2000 Nobel Prize for Physics with Zhores Alferov and Jack S. Kilby.

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▪ German physicist
born August 25, 1928, Weimar, Germany

      German-born physicist who, with Zhores Alferov and Jack S. Kilby, was awarded the 2000 Nobel Prize for Physics for their work that laid the foundation for the modern era of microchips, computers, and information technology.

      After receiving a Ph.D. (1952) from Georg August University in Göttingen, Germany, Kroemer worked in the United States at RCA Laboratories (1954–57) in Princeton, New Jersey, and at Varian Associates (1959–66) in Palo Alto, California. In 1968 he became professor of electrical engineering at the University of Colorado at Boulder, and in 1976 he joined the faculty of the University of California at Santa Barbara.

      In 1957 Kroemer carried out theoretical calculations showing that a heterostructure transistor would be superior to a conventional transistor, especially for certain high-frequency uses and other applications. (Most computer chips and other semiconductor components are made from one kind of material, whereas heterostructures are made of different materials.) Scientists later showed that he was correct—heterostructure transistors can operate at frequencies 100 times higher than conventional transistors, and they also work better as amplifiers. Alferov's research team in the Soviet Union applied Kroemer's theory, developing the first practical heterostructure electronic device in 1966. Alferov then pioneered electronic components, including the first heterostructure laser, which both men had proposed independently in 1963. Heterostructure devices made fibre-optic communications possible and are used in numerous everyday products, including computers and video players.

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Universalium. 2010.

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  • Kroemer, Herbert — (n. 25 ago. 1928, Weimar, Alemania). Físico alemán. Recibió un Ph.D. (1952) de la Universidad Georg August en Gotinga y más tarde se trasladó a EE.UU., donde enseñó en varias instituciones. En 1957 llevó a cabo cálculos teóricos que demuestran… …   Enciclopedia Universal

  • Herbert Kroemer — (Herbert Krömer) (* 25. August 1928 in Weimar) ist ein deutscher Physiker und Nobelpreisträger. Inhaltsverzeichnis 1 Leben 2 Werk 3 Auszeichnungen 4 W …   Deutsch Wikipedia

  • Herbert — Herbert, George * * * (as used in expressions) Asquith, H(erbert) H(enry), 1 conde de Oxford y Asquith Best, Charles H(erbert) Bradley, F(rancis) H(erbert) Herbert Ernst Karl Frahm Bush, George (Herbert Walker) Dillinger, John (Herbert) Dow,… …   Enciclopedia Universal

  • Kroemer — I Kroemer,   Herbert, deutscher Physiker, *Weimar 25.8. 1928; veröffentlichte 1957 eine bahnbrechende Arbeit über einen aus verschiedenen Elementen zusammengesetzten Transistor (»Heterotransistor«), der sich besonders für hohe Verstärkungen und… …   Universal-Lexikon

  • Herbert — /herr beuhrt/, n. 1. Frank, 1920 86, U.S. science fiction writer. 2. George, 1593 1633, English clergyman and poet. 3. Victor, 1859 1924, U.S. composer and orchestra conductor, born in Ireland. 4. a male given name: from Old English words meaning …   Universalium

  • Herbert Kroemer — (25 août 1928 à Weimar, Allemagne) est un physicien allemand et américain. Il est colauréat avec Jores Alferov d une moitié du prix Nobel de physique de 2000[1]. Biographie Il a obtenu son doctorat de physique théorique en 1952 à l… …   Wikipédia en Français

  • Kroemer — ist der Familienname folgender Personen: Herbert Kroemer (* 1928), deutscher Physiker und Nobelpreisträger Karl Kroemer (1871–1956), deutscher Weinbauwissenschaftler Siehe auch: Krömer Diese Seite …   Deutsch Wikipedia

  • Herbert Kroemer — (25 de agosto, de 1928) es un Profesor de ingeniería eléctrica y computación en la Universidad de California, en Santa Barbara, recibió un Ph.D. en física teórica en 1952 de la Universidad de Göttingen, Alemania. En 2000, él y Zhores Ivanovich… …   Wikipedia Español

  • Herbert Kroemer — Infobox Scientist name = Herb Kroemer imagesize = 180px caption = Herbert Kroemer birth date = birth date and age|1928|8|25 birth place = Weimar, Germany residence = United States nationality = Germany United States fields = Electronic engineer… …   Wikipedia

  • Kroemer — biographical name Herbert 1928 American (German born) electrical engineer …   New Collegiate Dictionary

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