Applied Physics Letters · 2010 · 202 citations · 16 references
EngineeringMaterials EngineeringMaterials ScienceBiosensorsSensorsThin FilmsOptical BiosensorsOptical Thin FilmsSensor MaterialsTerahertz PhotonicsTerahertz SpectroscopyThin Film Optical PropertiesChemical SensingMetamaterialsSensing ApplicationsSilicon NitrideSplit-ring ResonatorsTerahertz MetamaterialsTerahertz Time-domain SpectroscopyTime-domain Terahertz Spectroscopy
We design, fabricate, and characterize split-ring resonator (SRR) based planar terahertz metamaterials (MMs) on ultrathin silicon nitride substrates for biosensing applications. Proof-of-principle demonstration of increased sensitivity in thin substrate SRR-MMs is shown by detection of doped and undoped protein thin films (silk fibroin) of various thicknesses and by monitoring transmission changes using terahertz time-domain spectroscopy. SRR-MMs fabricated on thin film substrates show significantly better performance than identical SRR-MMs fabricated on bulk silicon substrates paving the way for improved biological and chemical sensing applications.
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Composite Medium with Simultaneously Negative Permeability and Permittivity
David R. Smith, Willie J. Padilla, D. C. Vier et al. · Physical Review Letters · 2000 · 8.7K citations · Full text
Three-dimensional optical metamaterial with a negative refractive index
Jason Valentine, Shuang Zhang, Thomas Zentgraf et al. · Nature · 2008 · 2.3K citations
Natural Sciences, Materials Engineering, Materials Science +13