Negative index metamaterial combining magnetic resonators with metal   films
  We present simulation results of a design for negative index materials that uses magnetic resonators to provide negative permeability and metal film for negative permittivity. We also discuss the possibility of using semicontinuous metal films to achieve better manufacturability and enhanced impedance matching. 
Uday K. Chettiar, Alexander V. Kildishev, Thomas A. Klar, and Vladimir   M. Shalaev