Semiconductors

Interview with Michal Lipson, Eugene Professor in the Departments of Electrical Engineering and Applied Physics at Columbia University. She recounts her childhood as the daughter of a prominent physicist whose work took the family to Israel and then in Brazil, where she spent her formative years in São Paulo. Lipson explains her decision to pursue a degree in physics at Technion in Israel, where she remained to complete her graduate studies in semiconductor physics under the direction of Elisha Cohen. She describes her postdoctoral research at MIT in material science with Lionel Kimerling, and she explains the opportunities that led to her first faculty position at Cornell. Lipson describes her dual interest in pursuing basic science research and industry-relevant work. She discusses her work in photonics which led to her MacArthur fellowship and the significance of her study of slot waveguides and optical amplification in silicon. Lipson describes her subsequent work in nonlinear photonics and high-power lasers, and she explains the opportunity leading to her current position at Columbia, where she has focused on two-dimensional materials. At the end of the interview, Lipson emphasizes the fundamental importance of oscillators that have always informed her research.

This interview with Quantum Economic Development Consortium (QED-C) Executive Director Celia Merzbacher is part of a series of one-hour interviews conducted at the 2024 Quantum World Congress. In it, Merzbacher recalls her father, physicist Eugen Merzbacher, and her own education in science at Brown University and Penn State University, as well as her research on glassy and optical materials at Lawrence Livermore National Laboratory and the Naval Research Laboratory. She recounts her move to the White House Office of Science and Technology Policy to lead the organization of the National Nanotechnology Initiative and her subsequent work with the Semiconductor Research Corporation. Discussing QED-C, which she joined in 2019, Merzbacher addresses the state and structure of the emerging quantum industry, the role of federal and state government in promoting the industry, QED-C’s specific activities, and the place of quantum technology in international relations. The interview concludes with a discussion of Merzbacher’s experience as executive director of the President’s Council of Advisors on Science and Technology during the George W. Bush administration.

This is a biographical interview with physicist James C. McGroddy, who was director of research at IBM from 1989 to 1995. McGroddy recounts his family’s history and his own upbringing in Upper Nyack, New York, as well as the role of the Catholic Church in his education and adult life. He discusses his college education at St. Joseph’s College in Philadelphia and his PhD research in physics at the University of Maryland, where he worked with Ed Stern. He discusses his decision to join IBM Research in 1965, working initially under the supervision of Marshall Nathan, and his research in areas such as alternatives to silicon semiconductors and, later, optoelectronics. He stresses the importance of a sabbatical in Denmark and his concern about IBM’s long-term support for its research activities in shaping his career. McGroddy recounts initiatives that he and others took in the 1970s to connect IBM Research with product development and manufacturing, including “firefighting” work and McGroddy’s formulation of the idea for IBM’s Joint Programs, beginning with the Advanced Silicon Technology Lab. Moving into the 1980s, he discusses his shift into working on IBM’s product portfolio, including his involvement in IBM business decisions and the company’s success with flat-panel displays. Reflecting on his time as director of research, McGroddy emphasizes his efforts to prove and enhance the value of IBM Research to the company, and he recounts his defense of IBM Research during the company’s crisis period in 1993. The interview concludes with a discussion of McGroddy’s activities following his retirement from IBM in 1996, and particularly his efforts to encourage the better application of information technology in medical decision-making.

In this interview, Mike Duncan of Optica speaks with physicist, engineer, and inventor Peter Schultz. Schultz recounts his early life in New York and New Jersey, and his education at Rutgers University, where he began studying the physical properties of glass. He describes his early work after graduate school in glass science at Corning in New York, and how that work evolved into research into fiber optics with Bob Mauer. Schultz describes the development of fiber optics over the course of the 1970s, and its industrial and commercial importance. He recounts his move from Corning to other companies working on fiber optics in the 1980s, SpecTran, and then the Germany-based Heraeus, where he became CEO of US operations. Finally, Schultz discusses consulting work in Russia, and his visit to the White House to receive the National Medal of Technology from Bill Clinton.

Interview with Jim Hsieh, founder of Sheaumann Laser, Inc. The interview begins with Hsieh describing his childhood in China during turbulent times and his family’s move to Taiwan where he completed secondary school and college. He discusses his decision to pursue graduate school in the US at Virginia Tech and his subsequent time working at Westinghouse in the Molecular Electronics Division in Baltimore. Hsieh then continued his education first at UC Berkeley and then moved to the University of Southern California. He recalls some of the early patents he contributed to, related to circuit design and semiconductors. Hsieh describes his move to MIT Lincoln Lab where he worked under John Goodenough. He discusses the beginnings of fiber optic communication, and describes the technical aspects of his research at the time on topics such as gallium arsenide lasers, laser diodes, and quarternary lasers. Hsieh talks about his decision to start his own company, Lasertron, with Kenneth Nill, and reflects on the transition from a purely research environment to a business endeavor. He discusses witnessing the growth of the laser market and the international landscape of laser development at the time. The interview concludes with Hsieh describing the sale of Lasertron to Oak Industry and the creation of Sheaumann Laser, Inc.

Series of seven interview sessions with Carver Mead, Gordon and Betty Moore Professor Emeritus at Caltech. Mead recounts his childhood in California, and he describes the impact of watching his father’s career in the electric power industry. He credits his schoolteachers for encouraging his early interests in math and science, and he explains why attending Caltech as an undergraduate was an easy choice for him because he felt immediately welcomed during his first visit. He describes what it was like to learn quantum mechanics from Linus Pauling, and he explains that his decision to major in electrical engineering stemmed from the fact that applied physics was shunned in the physics department because Murray Gell-Mann referred to it as “squalid state physics.” Mead describes his decision to stay at Caltech for graduate school, and he explains how he became interested in semiconductors and transistors and what would become the origins of “device physics” and how his dissertation research contributed to these developments. He describes his developing understanding that the future of electronics would be in low power, high-performance devices and why he would be best positioned to foster this future as a faculty member at Caltech. Mead describes his collaborations and interest in industry labs including IBM, RCA, and Bell, and he describes his initial and then longtime work with Gordon Moore. He discusses the value of RF transmitters in 1960s-era communications technology and the prospects of satellite telecommunications at the dawn of the space age. Mead describes the origins of VSLI technology, word processors, and microcomputers, and he describes his collaboration with Lynn Conway and the process that went into the classic textbook they coauthored. He describes his research using the human mind as a source of inspiration to push electronics and microprocessors to the next level, and he explains the value of bouncing ideas off of Feynman over lunch. Mead describes the singular potential of his student and collaborator Misha Mahowald, and the value of his work with Arnold Beckman. He discusses the several companies that were spun out of his research in electronics and biophysics, and he describes his work on cameras with Michihiro Yamaki and the learning curve associated with research culture in Japan. Mead offers his perspective on the need to update the debates between Einstein and Bohr in the wake of recent developments in physics, and he explains the intellectual origins of his text Collective Electrodynamics. He explains why scientific debates can take on philosophical or even religious dynamics, and he discusses the origins of G4V and how to think of gravitational attraction as an analogy to electromagnetic interaction. Relatedly, Mead describes his work with Kip Thorne and his involvement with the LIGO endeavor, and he explains why the line between science and engineering is fuzzier than is commonly understood. He explains the significance of the Shapiro Delay, he surmises that the mystery of Dark Energy is sourced in the fact that physics is approaching the problem in the wrong way, and he explains why physics has become hamstrung in its pursuit of mathematizing physical reality ahead of experimental guidance. Mead explains that his views are rooted in his ability to think in pictures, as opposed to abstract symbols, and that the field needs to be more welcoming and inclusive to those who may see math as a barrier to working in physics at a high level. At the end of the interview, Mead describes his interest in current challenges with electric grid infrastructure, he explains why he has championed the work of women in science throughout his career, and he strikes an optimistic note that science always has and will continue, to provide solutions to the world’s most pressing problems.

Interview with Mansour Shayegan, Professor of Electrical Engineering at Princeton. Shayegan recounts his family roots in Isfahan, and the political and social dynamics of growing up in Iran. He explains his decision to pursue an undergraduate education in the United States and the opportunities leading to his enrollment at MIT as an undergraduate. He describes his decision to stay at MIT for graduate school and his experiences in the electrical engineering program, where he worked with his advisor Millie Dresselhaus, during the Iranian Revolution. Shayegan describes Dresselhaus’s reputation as the “Queen of Graphite” and he describes the impact of her research on his dissertation on graphite intercalation. He discusses some of the commercial potential of his graduate research and emphasizes his primary interest in basic research and describes his postdoctoral work at the University of Maryland. He explains the origins of his interest in semiconductor physics in collaboration with Bob Park and Dennis Drew, and he describes the events leading to his faculty appointment at Princeton. Shayegan describes the work involved getting his lab and the MBE system set up, and he discusses the excellent culture of collaboration in both the physics and EE programs at Princeton. He explains recent advances in superconductivity research, and he reflects on the success he has enjoyed as a mentor to graduate students over the years. Shayegan expresses his pleasure in teaching quantum mechanics to undergraduates, and he explains his long-term interest in research on gallium arsenide. At the end of the interview, Shayegan reflects on his contributions to the field, its intellectual origins in the prediction of Bloch ferromagnetism, and the importance of securing the ongoing support from the National Science Foundation.

Interview with Lu Sham, Distinguished Professor of Physics Emeritus, University of California at San Diego. Sham recounts his childhood in Hong Kong and he describes the legacy of Japanese rule from World War II. He describes his early interests in math and he explains his decision to pursue a higher education in England at Imperial College. Sham discusses his motivation to conduct graduate work at Cambridge University and to study under Nevill Mott on the first principle method calculating the electron contribution to lattice vibration. He describes the help provided by John Ziman to secure his postdoctoral position at UC San Diego to work with Walter Kohn, and he describes the foundational collaboration and research that went into the Kohn-Sham equation and how this work builds on the classic debate between Einstein and Bohr. He describes the opportunities leading to his faculty appointment and eventual tenure on the physics faculty, and he explains the benefits of spending summers doing research at Bell Labs. Sham discusses his contributions to research on semiconductors, quantum computing, and density-functional theory. He describes his more recent interest in optics and the formative work he has done with graduate students and postdoctoral researchers over the years. Sham discusses his administrative service as department chair and Dean of Science. At the end of the interview, Sham asserts that the future of condensed matter physics holds limitless possibilities, and that improvements in semiconductor materials will push quantum information abilities in exciting and unforeseen directions.

Interview with Piero Pianetta, Research Professor in the Photon Science Department, joint with Electrical Engineering, at Stanford. He recounts his family’s Italian heritage, and his upbringing in Italy and then in California. He explains his interest in pursuing physics as an undergraduate at Santa Clara University, and his graduate work at Stanford where he worked on monochromator experiments and contributed to the SPEAR collaboration at SLAC. Pianetta discusses his scientific interests converging on surface science and the influence of Seb Doniach on his research. He describes his postgraduate work at HP where he focused on laser annealing and subsequently SSRL to conduct research on device technology and photoemission techniques. Pianetta explains how SSRL became integrated in SLAC and how he became administratively housed in the Photon Science department, and how this development is illustrative of the way SLAC has diversified its research and redefined its relationship with the Department of Energy. He describes his most recent responsibilities as chair of the photon science group at SLAC and his current work chairing the laboratory promotions committee. At the end of the interview, Pianetta reflects on the long-term impact of remote work for SLAC generally and he conveys optimism on improving SSRL’s long-term capabilities.

Interview with Eli Yablonovitch, Professor of Electrical Engineering and Computer Sciences at UC Berkeley. He talks about the overlap of these fields with applied physics, and he recounts his family’s Jewish heritage in Europe and his origin as a Displaced Person born to refugee parents after World War II. Yablonovitch describes his childhood in Montreal, his early interests in science, and his undergraduate experience at McGill where he first became interested in transistors. He explains his decision to attend Harvard in Applied Physics for graduate school to and the intellectual influence of Mike Tinkham. Yablonovitch discusses his thesis research on semiconductor optics and four-wave mixing, and he describes the opportunities that led to his postdoctoral work at Bell Labs to work on laser-based communications systems. He discusses his return to Harvard as a faculty member and his subsequent solar research work at Exxon. Yablonovitch discusses his formative collaboration with Sajeev John and his move to UCLA, and he explains how the rise of the internet fostered his entrepreneurial instincts. He describes his work to improve cellphone antennae and his decision to transfer to Berkeley and the origins of Alta Devices. Yablonovitch describe his current interests in circuits and chips and he shares his view on China’s work in basic science. At the end of the interview, Yablonovitch reflects on outliving many tech companies, some of the intractable challenges of solar energy, and why Feynman’s lectures remain a guiding light for his own interests.