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Circuit Models of Nanoscale Devices

  • Árpád I. Csurgay
  • Wolfgang Porod
Chapter

Abstract

On the nanoscale, equivalent circuit models are not scale invariant. An ideal equivalent circuit can be a valid model of a device at the macro or even micro-scale, but it might not reveal even the qualitative properties of the same device during downscaling. We illustrate the consequences of downscaling to the nanoscale with an example, the nanoscale capacitor. The circuit models combine four groups of state variables: (1) classical mechanical, (2) classical electromagnetic, (3) quantum mechanical, and (4) quantum electromagnetic. In general, a quantum-classical equivalent circuit is combined from four coupled “subcircuits,” representing the classical mechanical dynamics of the nuclei, the classical dynamics of the electromagnetic field, the quantum wave-dynamics of the electrons, and the QFT dynamics of photons. The modeling procedure should determine the state-variables of the four subcircuits and their couplings.

Two examples illustrate the quantum-classical models. The first combines the mechanical dynamics of the nuclei with the quantum wave behavior of the electrons. The second illustrates an application of the nanocapacitor as a nonlinear infrared sensor.

Keywords

Coulomb Force Equivalent Circuit Model Casimir Force Open Quantum System Coulomb Field 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Árpád I. Csurgay
    • 1
    • 2
  • Wolfgang Porod
    • 1
    • 2
  1. 1.Faculty of Information TechnologyPázmány Péter Catholic UniversityBudapestHungary
  2. 2.Center for Nano Science and TechnologyUniversity of Notre DameNotre DameUSA

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