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Type of Document Dissertation Author Liu, Mo Author's Email Address mliu1@nd.edu URN etd-02212006-120033 Title Robustness and power dissipation in quantum-dot cellular automata Degree Doctor of Philosophy Department Electrical Engineering Advisory Committee
Advisor Name Title Thomas Fehlner Committee Chair Gary Bernstein Committee Member Gregory Snider Committee Member James Merz Committee Member Keywords
- power dissipation
- robustness
- QCA
Date of Defense 2006-02-15 Availability restricted Abstract Quantum-dot cellular automata (QCA) is a new computation paradigm whichencodes binary information by charge configuration within a cell instead of the
conventional current switches. No current flows within the cells. The columbic
interaction is sufficient for computation. This revolutionary paradigm provides a
possible solution for transistor-less computation at the nanoscale. QCA logic devices
such as binary wires, majority gates, shift registers and fan-outs made of metal
islands and small capacitors have been successfully fabricated. Experimental and
theoretical research on the switching of molecular QCA cells has been underway.
This thesis will focus on robustness and power dissipation in QCA circuits. The
robustness of both metallic and molecular QCA circuits are studied. The power
dissipation and power flow in clocked molecular QCA circuits are explored. Our
results show that QCA approach is inherently robust and ultra low power dissipation
is possible in QCA.
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