A. Tognazzi, D. Rocco, M. Gandolfi, A. Locatelli, L. Carletti, C. de Angelis
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High Quality Factor Silicon Membrane Metasurface for Intensity-Based Refractive Index Sensing
We propose a new sensing device based on all-optical nano-objects placed in a suspended periodic array. We demonstrate that the intensity-based sensing mechanism can measure environment refractive index change of the order of 1.8×10−6, which is close to record efficiencies in plasmonic devices.
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