Eli Yablonovitch: What New Device Will Replace the Transistor?

MIT.nano

The transistor has been with us for over 70 years, and during that time it has changed civilization, but it is now time for an improvement.

MIT Building 34, Grier Room 34-401

The transistor has a flaw. It’s not very sensitive. It relies upon the Boltzmann factor, which demands almost 1 volt to turn the transistor switch off and on. In contrast, electrical noise should allow operation of an electrical switch with only ~10mVolts, a voltage reduction of 100x, and a power reduction improvement of 10^4x. This has occupied the leading electronic companies and researchers who would become ecstatic with only a 2x improvement, but even that has been elusive. The speaker will welcome suggestions for overcoming this problem! In the meantime, a number of imaginative avenues are being pursued in the fields of nano-mechanics, nano-photonics, and nano-magnetism, but the most comprehensive candidate is electronic quantum tunneling between two sharp quantum states, for switching. Thus the spectral shape of these quantum levels, and indeed spectroscopy, now enters into electronics. We find that a revision of Fermi’s Golden Rule is needed to correctly identify the spectral line-shape that would produce a sharp and sensitive switch.<a href="https://mitnano.mit.edu/yablonovich-perspectives-2019" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">Biography</a>This event is free and open to the public. Advance registration required.ABOUT THE MIT.nano PERSPECTIVES SERIES“There is plenty of room at the bottom”, an idea introduced by Richard Feynman in 1959. Ever since, developments in nanoscale science and technology have lead to rapid interdisciplinary advancements in the fields of materials, devices, biotechnology and instrumentations. MIT.nano is pleased to offer a new seminar series, organized by assistant professor Farnaz Niroui, to continuously explore these frontiers.The seminar series will offer monthly talks at MIT, starting in Fall 2019, from researchers across the spectrum of nanoscience and nanoengineering. To lay the foundation for this series, Niroui has organized an introductory set of lectures this spring by experts who have played seminal roles in the progress of our understanding of the nanoscale in each of key areas over the past decades.Entitled "Perspectives in Nanotechnology," these lectures will offer insight into current research and future directions by the experts based on their experiences in the field. Mr. Howe's lecture is the first of this set.Each talk will last approximately 45 minutes long and will be followed by a 30-minute question-and-answer session and a reception with refreshments.Visit m<a href="https://mitnano.mit.edu/" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">itnano.mit.edu</a> to see the full list of speakers for the five Perspectives lectures being offered this spring.

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Eli Yablonovitch: What New Device Will Replace the Transistor?

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Eli Yablonovitch: What New Device Will Replace the Transistor?

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