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THz Discrimination of materials: demonstration of a bioinspired apparatus based on metasurfaces selective filters

We present an apparatus for terahertz fingerprint discrimination of materials designed to be fast, simple, compact and economical in order to be suitable for preliminary on-field analysis. The system working principles, bioinspired by the human vision of colors, are based on the use of microfabricated metamaterials selective filters and of a very compact optics based on metallic ellipsoidal mirrors in air. We experimentally demonstrate the operation of the apparatus in discriminating simple substances such as salt, staple foods and grease in an accurate and reproducible manner. We present the system and the obtained results and discuss issues and possible developments.

preprint2016arXivOpen access
P. CarelliF. ChiarelloG. TorrioliM. G. Castellano
physics.ins-det
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Open access4 authors1 topic
Imported metadata coverageMissing code, dataset, citation and institution fields are tracked without dominating the paper.Details
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P. CarelliF. ChiarelloG. TorrioliM. G. Castellano

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