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Calendar: ALS Calendar
Title: ALS Colloquium | R. Stanley Williams (Hewlett-Packard Labs)
When: 01/24/2013 9:30 AM - 10:30 AM
Description: ALS Colloquium

Thu, January 24, 2013
9:30 - 10:30
15-253 Conf Room

David Kilcoyne

Presented by:
R. Stanley Williams
Hewlett-Packard Labs

Mott Memristors, Spiking Neuristors and Turing Complete Computing with an Electronic Action Potential

Dr. Matthew Pickett and I have been exploring a bio-inspired route to extremely low-power transistorless computation. We have observed that the thermally-induced first order phase transition from a Mott insulator to a highly conducting state in correlated-electron transition-metal oxides resembles the opening of ion channels in the cell walls of neurons, which have been shown by Leon Chua to be 'locally active' memristors. This insight led us to build and characterize a neuristor using nanoscale Mott memristors. The neuristor is an electronic circuit with gain and threshold behavior (integrate and fire) that emulates the Hodgkin-Huxley model for the neural action potential, a voltage spike that carries information along axons. Through simulations, we have shown that a system of neuristors can perform Boolean logic and can be assembled into a cellular automaton that is capable in principle of Turing complete computation.

Stan Williams is an HP Senior Fellow and Vice President at Hewlett-Packard Laboratories. He received a B.A. degree in Chemical Physics in 1974 from Rice University and his Ph.D. in Physical Chemistry from U. C. Berkeley in 1978. He was a Member of Technical Staff at AT&T Bell Labs and a faculty member of the Chemistry Department at UCLA. He joined HP Labs in 1995 to found a research group with the charter to perform fundamental research in areas of interest to HP. In 2008, his group showed that various resistance switching phenomena that had been studied for decades were described by the memristor circuit formalism developed by Prof. Leon Chua beginning in 1971. He has received the 2009 EETimes Innovator of the Year ACE Award, the 2007 Glenn T. Seaborg Medal for contributions to Chemistry, the 2004 Herman Bloch Medal for Industrial Research and the 2000 Julius Springer Award for Applied Physics. He has over 140 US patents and over 390 papers published in reviewed scientific journals.
Location: 15-253 Conf Room