J. E. Lilienfeld | |
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![]() Lilienfeld at age 53 | |
Born | |
Died | August 28, 1963 | (aged 81)
Citizenship | Austro-Hungarian (1882 – September 1919) Polish (1919–1934) American (1934–1963) |
Alma mater | Friedrich-Wilhelms-Universität |
Known for | Field-effect transistor Electrolytic capacitor |
Scientific career | |
Fields | Physicist Electrical engineer |
Institutions | Leipzig University Amrad, Inc Ergon Research Laboratories |
Doctoral advisor | Max Planck Emil Warburg |
Other academic advisors | Jacobus Henricus van 't Hoff |
Signature | |
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Julius Edgar Lilienfeld (April 18, 1882 – August 28, 1963) was an Austro-Hungarian-American physicist and electrical engineer, who has been credited with the first patent on the field-effect transistor (FET) (1925). He was never able to build a working practical semiconducting device based on this concept. Additionally, because of his failure to publish articles in learned journals and since high-purity semiconductor materials were not available to him, his FET patent never achieved fame, causing confusion for later inventors.[1]