@article {4980748920100419, title = {Stacked complementary metasurfaces for ultraslow microwave metamaterials.}, journal = {Applied Physics Letters}, volume = {96}, number = {16}, year = {2010}, pages = {164103}, abstract = {We have experimentally realized at microwaves a dual-band ultraslow regime by constructing a metamaterial based upon the alternative stack of conventional- and complementary-split-ring-resonators-surfaces. The group delay reaches values larger than two orders of magnitude than those obtained when the electromagnetic wave propagates the same thickness in free-space. The ultraslow waves have been initially predicted by a numerical eigenmode analysis and finite-integration frequency domain simulations. Such ultraslow modes can be integrated into free-space technology for spatial delay lines, and traveling wave amplifier as well as sensors due to the enhanced interaction between different beams or radiation and matter. [ABSTRACT FROM AUTHOR]}, keywords = {Electromagnetic waves, Metamaterials, Microwaves, Resonators, Simulation methods \& models}, issn = {00036951}, url = {http://search.ebscohost.com/login.aspx?direct=true\&db=iih\&AN=49807489\&site=ehost-live}, author = {Navarro-C{\'\i}a, M. and Aznabet, M. and Beruete, M. and Falcone, F. and El Mrabet, O. and Sorolla, M. and Essaaidi, M.} }