Fig. 1 Figure 1. (a) Layout of the experiment performed in beamline TIMEX; (b) Difference of normalized spectra downstream and upstream in magnesium below absorption edge; (c) The non-normal incidence geometry of the experiment performed in aluminum and the exploited permittivity to achieve the NZI resonance; (d) Difference of normalized spectra downstream and upstream in aluminum and the NZI enhancement obtained at 65°. C. Ferrante1*, L. Assogna2, E. Principi3, M. Silvestri2, A. Sahoo2, G. Batignani4,5, G. Fumero4,6,7, L. Foglia3, R. Mincigrucci3, D. Tedeschi2, L. Giannessi3, C. Masciovecchio3, T. Scopigno4,5, A. Marini2,1 1 Consiglio Nazionale delle Ricerche, CNR-SPIN, L’Aquila, Italy 2 Department of Physical and Chemical Sciences, University of L’Aquila, L’Aquila, Italy 3 Elettra - Sincrotrone Trieste S.C.p.A., Trieste, Italy 4 Department of Physics, University of Rome “La Sapienza”, Roma, Italy 5 Istituto Italiano di Tecnologia, Graphene Labs, Via Morego 30, I-16163, Genova, Italy 6 Department of Physics and Astronomy, West Virginia University, Morgantown, USA 7 Associate, Nanoscale Device Characterization Division, National Institute of Standards and Technology, USA e-mail: carino.ferrante@spin.cnr.it; andrea.marini@univaq.it Acknowledgments We acknowledge Elettra-Sincrotrone Trieste S.C.p.A. for providing access to its synchrotron radiation facilities and for financial support. This work has been funded by the European Union - NextGenerationEU, Mission 4, Component 1, under the Italian Ministry of University and Research (MUR) National Innovation Ecosystem grant ECS00000041 - VITALITY - CUP E13C22001060006 and European Union’s Horizon 2020 research and innovation programme Graphene Flagship under grant agreement No 881603. This work has been partially supported by the Progetti di ricerca di Rilevante Interesse Nazionale (PRIN) of the Italian Ministry of University and Research HARVEST 201795SBA3, PHOTO 2020RPEPNH, TransientMeta 2022N738SA - CUP E53D23001780006, and NOTBAD P2022E2PBB - CUPs: E53D23018310001 and B53D23028460001, SHEEP CUP: B53D23028580001. Original paper C. Ferrante et al., Light Sci Appl 14, 374 (2025); DOI: 10.1038/s41377-025-01985-w. Structure and Dynamics Elettra Highlights 2024–2025 93
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