Drift-Diffusion: A Model for Teaching Spatial-Dispersion Concepts and the Importance of Screening in Nanoscale Structures

@article{Hanson2010DriftDiffusionAM,
  title={Drift-Diffusion: A Model for Teaching Spatial-Dispersion Concepts and the Importance of Screening in Nanoscale Structures},
  author={G. W. Hanson},
  journal={IEEE Antennas and Propagation Magazine},
  year={2010},
  volume={52},
  pages={198-207}
}
  • G. W. Hanson
  • Published 2010 in IEEE Antennas and Propagation Magazine
Spatial dispersion has emerged as an extremely important concept in modeling metamaterials, including macro-, micro-, and nano-structured composites. However, the incorporation of spatial dispersion requires a considerable complication of the usual Ohm's law relationship with which students are familiar. In this note, the drift-diffusion equation is shown to be equivalent to the usual form of spatial dispersion in simple isotropic plasmas and metamaterials. It is suggested that the drift… CONTINUE READING

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