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Energy Efficient Electronics: Searching for the Milli-Volt Switch
Eli Yablonovitch [Professor, Electrical Engineering Computer Sciences, UC Berkeley] Abstract: Because of miniaturization represented by Moores Law, the energy efficiency of information processing steadily improves. We anticipate that the energy required to process a single bit of information will eventually become as tiny as 1 electron volt per function. Inevitably, most logic functions, including storage and readout, will eventually be that efficient. However, there is one information-processing-function that bucks this trend. That is communication, especially over short distances. Our best projections of improvements in the short distance communication function show that it will still require hundreds of thousands of electron volts just to move one bit of information 10 micrometers. This energy per bit discrepancy for communications is caused by the difference in voltage scale between the wires and the transistor switches. Transistors are thermally activated, leading to a required voltage kT/q. Wires are long, and they have a low impedance, allowing them to operate efficiently even at ~1 millivolt. The challenge, then, is to replace transistors with a new low-voltage switch that is better matched to the wires. I will present some of the technical options for such a new switch.From:citrisucViews:1337 7ratingsTime:55:39More inScience Technology

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Energy Efficient Electronics: Searching for the Milli-Volt Switch - Video