Hans Lippmann
Hans Herbert Otto Lippmann (born May 24, 1928 in Chemnitz ; † November 17, 2007 there ) was a German physicist . In the early days of microelectronics in the GDR, he was one of Werner Hartmann's closest employees and was involved in the development of microelectronics in Saxony.
Life
education
In 1946 Hans Lippmann began studying physics at the University of Leipzig . He attended mathematics lectures with Ernst Hölder , basic physics lectures with Estel and Christian Fischer, chemistry with Leopold Wolf and physical internships with Waldemar Ilberg and Christian Fischer, theoretical physics / quantum theory with Bernhard Kockel . He graduated in March 1952 with an experimental set-up for the detection of nuclear magnetic resonance in the variant specified by Felix Bloch with Artur Lösche .
After completing his studies, he worked as a research assistant at the Physics Institute. During this time his research consisted of further work on nuclear magnetic resonance. Artur Lösche recommended an apparatus for recording broad-line nuclear magnetic resonance absorption curves and their application to the protons in liquids of the p-azoxyanisole type for working on a dissertation. It should be possible to determine the order status of such phases ordered in the magnetic field from the shape and width of the nuclear magnetic resonance signal. During the design and construction of the nuclear magnetic resonance spectrometer, u. a. a narrowband amplifier with a double T-link and a new type of lock-in amplifier were used, about which he wrote a publication in 1953 in the journal “Experimental Technique of Physics” founded by Franz Xaver Eder . It was also necessary to familiarize himself with the topic of liquid crystals, which resulted in a collaboration with Wilhelm Maier ( Albert-Ludwigs-Universität Freiburg ).
After extensive preparations, Hans Lippmann began the final measurement and evaluation program in 1956. Due to the sensitivity of the microphones and the electrical influences caused by tram traffic outside the institute, the measurements could almost only be carried out at night. For the mathematical evaluations, Lippmann had to be satisfied with an electromechanical calculating machine. Lippmann submitted his dissertation "Magnetic nuclear resonance in crystalline-liquid phases - On the question of the degree of order of magnetically ordered samples of pp-azoxyanisole" in the early summer of 1957 and prepared for the oral exams in physics (Waldemar Ilberg), physical chemistry (Staude) and inorganic Chemistry (Wolf). On December 12, 1957, he passed the exam and received the degree of Doctor of Science.
Work in industry and at the Molecular Electronics Laboratory
In March 1958, Lippmann took up a position as head of the nuclear physics laboratory equipment department at VEB Vakutronik in Dresden under the main development manager Werner Hartmann. In 1963 he moved to the new job for molecular electronics (AMD) created by Hartmann in 1961 . When he took office, the group (later the Fundamentals Department) was re-established, and Hartmann entrusted him with setting up and managing it. The core of the research activities were work on thin-film elements (DSFET - thin-film field effect transistor ). The results of the first series of tests on the thin-film field-effect transistors, however, spoke against the inclusion of the active thin-film elements in the integrated microelectronic chip technology. The increasing compulsion to provide, combined with the lack of capacity at AMD, led to the fundamental decision to complete the work in favor of monolithic Si technology with half capacity by the end of 1970.
Working in teaching and research at TH / TU Karl-Marx-Stadt / TU Chemnitz
In 1969 Lippmann became honorary professor at the Institute for Technical Physics of the TH Karl-Marx-Stadt (Rector Christian Weißmantel ) and in 1971 full professor for thin-film and component physics / physics of thin layers . But there was also another collaboration with the Laboratory for Molecular Electronics. In 1979 he obtained his doctorate B ( habilitation ) with the thesis "Physical and technological problems of thin-film transistor technology". From 1980 to 1985 he worked on the development of the multi-level conductor path and the contact system for VLSI technology.
In 1990, during the fall of the Berlin Wall , Lippmann was entrusted with the role of Vice Dean of the Faculty of Electrical Engineering. In 1991 he was elected dean . As a result of the departure of important former university professors through death or because of Stasi work and in connection with the restructuring of the university, he was responsible for essential tasks in the re-profiling of the scientific area.
In 1992 he was appointed professor for solid state and optoelectronics . He retired on September 30, 1993 .
family
Hans Lippmann was married to Dorothea Lippmann. The sons Hans-Christian and Reinhard Lippmann emerged from the marriage.
Awards
Individual evidence
- ^ Hans Lippmann: Werner Hartmann - a physicist fate in the SED state . Phys. Bl. 48 (1992) No. 1, pp. 35-36 ( digitized version )
- ↑ DNB catalog
- ↑ From the University of Mechanical Engineering to the Universitas litterarum technicarum. Retrieved November 17, 2018 .
| personal data | |
|---|---|
| SURNAME | Lippmann, Hans |
| ALTERNATIVE NAMES | Lippmann, Hans Herbert Otto (full name) |
| BRIEF DESCRIPTION | German physicist |
| DATE OF BIRTH | May 24, 1928 |
| PLACE OF BIRTH | Chemnitz |
| DATE OF DEATH | November 17, 2007 |
| Place of death | Chemnitz |