 He was a visiting professor at the University of California, Los Angeles (1969–1970), University of Hawaii (1975), Stanford University (1976), Technische Universität Darmstadt (1979–1980), and Free University of Brussels (1980).He was appointed the founding director of the IBM Japan Science Institute (later named as IBM Tokyo Research Laboratory) in 1982, and served in that position until 1986, when he joined Princeton University's faculty as Dean of the School of Engineering and Applied Science (SEAS), and the Sherman Fairchild University Professor of Electrical Engineering and Computer Science.He was Dean from 1986–1991, and was responsible for establishing multiple interdisciplinary and/or inter-institutional centers and programs in academic disciplines as material science, opto-electronics, earthquake engineering, surface engineered materials, discrete mathematics for computer science, and plasma etching.