The properties of metamaterials based on gold thin film and nanoparticles

THz metamaterials are designed and fabricated. The resonance frequency of the SRRs (split ring resonators) based on thin film and nanoparticles is studied. Nanoparticle constituted metamaterial has a good absorb of THz spectrum. We compare the properties between thin film metamaterials and nanoparticles metamaterials. The transmission spectra of Au metamaterial was measured. The redshift was obtained when the metamaterials covered semiconductor The redshift phenomenon of absorbed wavelength of nanoparticle will be studied.