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VLSI Design
Volume 8 (1998), Issue 1-4, Pages 65-74

Molecular Wire Interconnects: Chemical Structural Control, Resonant Tunneling and Length Dependence

1Department of Chemistry and Materials Research Center, Northwestern University, Evanston, Illinois 60208-3113, USA
2Universidad Central de Venezuela, Caracas, Venezuela
3National Institute of Standards and Technology, Gaithersburg , MD, USA

Copyright © 1998 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Molecular wires have several promising features, that would appear to make them ideal for advanced interconnects in nanoscale electronic devices. We discuss several aspects of the linear and nonlinear conductance of molecular wire interconnects. Topics include energy dependence of molecular conductance, resonant tunneling behavior, control of conductance by molecular structure and geometry, length dependence including the tunneling regime energetics. Design rules using molecular interconnects will differ substantially from those with more standard, lithographically structured silicon interconnects. In particular, the dissipation mechanisms will differ, both tunneling and ballistic regimes should be available, coulomb blockade and staircase behavior will be observed (but under differing conditions) and fabrication of gate electrodes is a challenge.