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Electric field measurement for quantum‐dot cellular automata clocking circuits
Author(s) -
Yan Minjun
Publication year - 2008
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.2916
Subject(s) - quantum dot cellular automaton , electric field , electronic circuit , signal (programming language) , cellular automaton , field (mathematics) , computation , quantum cellular automaton , bistability , quantum dot , computer science , physics , electronic engineering , optoelectronics , materials science , algorithm , quantum mechanics , engineering , mathematics , pure mathematics , programming language
Bistable molecules under electric field are being investigated for the concept of quantum‐dot cellular automata (QCA). Different configurations of molecular arrays implement various logic devices and circuits. The electric field emitted from underlying metal wires, which are applied with clock signal, not only enables power gain, but also fulfills pipelining computation. It might be convenient to measure the electric field distribution directly from these metal wires. A pseudo‐quantitative method was developed to map the electric field distribution with electrostatic force microscopy. This method converts the phase signal into the electric field intensity, by which we demonstrated how to use a particular electric field distribution to drive the computation of QCA molecules. Copyright © 2008 John Wiley & Sons, Ltd.