Long-range Babinet's effect in complementary left-handed material with gold nanoparticles

摘要

Babinet's effect occurs at a long wavelength span of incident light during Fourier transform infrared spectroscopy scanning in complementary left-handed material (LHM) samples. The occurring wavelength region ranges from 4 to 20 μm. The LHM sample is composed of split ring resonator and wire array. Complementary samples were prepared using standard integrated-circuit processes on a Si wafer. Gold nanoparticles were deposited on the conducting parts of the patterns. Transmittance-enhanced behavior was also identified from those consequent data. The surface plasmon resonated on Au nanoparticle appears to contribute to this enhancement.