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September 28, 2011

Mtg: Carbon Electronics: From Materials Synthesis to Circuit Demonstration

by @ 8:19 am. Filed under ALL, NanoEngineering, Semiconductors

TUESDAY October 11, 2011
SCV Electron Devices Chapter, with Nanotechnology Chapter
Speaker: Prof. H.-S. Philip Wong, Center for Integrated Systems and Department of Electrical Engineering, Stanford University
Time: Networking/pizza at 6:00 PM; Presentation at 6:15 PM
Cost: none.
Place: National Semiconductor, Building E1, Conference Center, 2900 Semiconductor Drive , Santa Clara
RSVP: not required

This year marks the 13th anniversary of the first publication of the carbon nanotube transistor.? While there have been significant accomplishments in fundamental understanding and discovery, the engineering work that is required to harness carbon nanotube into useful technologies is just beginning.
This presentation reviews recent progress in carbon nanotube electronics, focusing on digital logic applications including the transistor and the interconnect wires.? We will start with material synthesis using chemical vapor deposition and present a method for growing predominantly aligned carbon nanotubes over hundreds of microns over full 4-inch wafers.? Techniques to transfer these carbon nanotubes to arbitrary substrates will be presented.? This enabled the development of a variety of applications including three-dimensionally integrated carbon nanotube circuits.? This is followed by device fabrication and circuit demonstration, showing rail-to-rail, cascadable logic gates that point the way to large scale integrated circuits.? We will present some recent advances in mitigating the impact of metallic carbon nanotubes for transistor applications and forming good metal to carbon nanotube contacts.? Compact device models have been developed for circuit and system-level performance estimation and circuit design.? The models are relatively robust and have been used successfully in many academic research groups independent of our involvement.? Finally we will conclude with recent results of an experimental demonstration of GHz operation of ring oscillator digital CMOS circuits using metallic carbon nanotube and graphene as interconnects.

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