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Through a numerical study, we proposed and demonstrated that the one-dimensional periodic plasmonic-grooves (1D-PPG) can give rise to a super chiral field inside grooves under normal illumination with off-groove linear polarization. The handedness of the optical chirality of chiral field can be reversed by modifying the incident polarization angle from + 45° relative to groove's period direction to...
We propose a layer-by-layer graphene/insulator stacks based terahertz plasmonic sensor of refractive index of testing samples using a prism-coupling attenuated total reflection configuration. An angular interrogation technique has been used to explore the performance of the sensor in terms of detecting accuracy, sensitivity, and figure of merit (FOM). From the analysis of theoretical resonance angle...
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