期刊
AUSTRALIAN JOURNAL OF CHEMISTRY
卷 63, 期 2, 页码 173-183出版社
CSIRO PUBLISHING
DOI: 10.1071/CH09504
关键词
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资金
- FET-Proactive STREP FP7
- Belgian Federal Government
We propose charge quantization in electrochemical oxidation-reduction (redox) systems as a route to performing logical operations efficiently and reversibly. The theory is based on the interfacial potential distribution for electrodes coated with electroactive self-assembled molecular films. We monitor the change in the oxidation number by studying the current as a function of the working and reference electrode potentials and of the temperature. Diamond-shaped regions can be defined that delineate the stability of a given redox species as a function of the applied and reference potentials. Using these electrochemical Coulomb diamonds, we then show the principles for the design of a complete set of binary gates and a finite-state set-reset machine. We demonstrate the analogies between these redox systems and nanoscale solid-state systems where the charging energy is finite. Redox systems allow simple logic operations at room temperature because typically the standard potential is higher than the thermal energy.
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