Magnetism from conductors and enhanced nonlinear phenomena

@article{Pendry1999MagnetismFC,
  title={Magnetism from conductors and enhanced nonlinear phenomena},
  author={John Brian Pendry and Anthony J. Holden and D. J. Robbins and William James Stewart},
  journal={IEEE Transactions on Microwave Theory and Techniques},
  year={1999},
  volume={47},
  pages={2075-2084}
}
We show that microstructures built from nonmagnetic conducting sheets exhibit an effective magnetic permeability /spl mu//sub eff/, which can be tuned to values not accessible in naturally occurring materials, including large imaginary components of /spl mu//sub eff/. The microstructure is on a scale much less than the wavelength of radiation, is not resolved by incident microwaves, and uses a very low density of metal so that structures can be extremely lightweight. Most of the structures are… 
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