Papers Published

1. Cummer, SA; Popa, BL, Wave fields measured inside a negative refractive index metamaterial, Applied Physics Letters, vol. 85 no. 20 (November, 2004), pp. 4564-4566, AIP Publishing [1.1823595], [doi] .
   (last updated on 2023/06/01)

   Abstract:
   Measured spatial variations of field phase and amplitude versus position inside a wire/split ring resonator negative refractive index metamaterial are presented that show that the phase velocity inside a negative index material points toward the source and consequently that phase velocity and energy flow are reversed in such a medium. These measurements directly demonstrate the fundamental behavior of electromagnetic waves in a negative refractive index material. The same internal field measurements are also used to accurately and reliably measure the effective bulk properties of the negative index metamaterial. © 2004 American Institute of Physics.

   Keywords:
   Refractive index;Electromagnetic waves;Optical systems;Energy transfer;Phase transitions;Refraction;Permittivity;