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17 August 2014 Engineering wavefront with Huygens, Fermat, Bragg, Friedel, and Fresnel laws (presentation video)
Zeno Gaburro
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Proceedings Volume 9172, Nanostructured Thin Films VII; 91720E (2014) https://doi.org/10.1117/12.2062983
Event: SPIE NanoScience + Engineering, 2014, San Diego, California, United States
Abstract
We propose a metasurface that generalizes classical Snell and Fresnel laws, based on phase discontinuities. I provide an outlook on this structure, from different and complementary points of view, referred to classical Huygens, Fermat, Bragg, Friedel and Fresnel laws. The structure shows a generalization of the concept of crystallographic systematic absence. As a result, the Friedel law of crystals completely breaks down. A novel concept of "metacrystal" can be introduced, where systematic absences can be originated from form factors of meta-atoms, in contrast with natural absences, which are based on structure factors only. Applications will be also presented.
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Zeno Gaburro "Engineering wavefront with Huygens, Fermat, Bragg, Friedel, and Fresnel laws (presentation video)", Proc. SPIE 9172, Nanostructured Thin Films VII, 91720E (17 August 2014); https://doi.org/10.1117/12.2062983
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KEYWORDS
Video
Crystals
Wavefronts
Current controlled current source
Nanostructured thin films
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