{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,27]],"date-time":"2026-07-27T05:58:50Z","timestamp":1785131930030,"version":"3.55.0"},"reference-count":52,"publisher":"Wiley","issue":"14","license":[{"start":{"date-parts":[[2026,7,25]],"date-time":"2026-07-25T00:00:00Z","timestamp":1784937600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,7,25]],"date-time":"2026-07-25T00:00:00Z","timestamp":1784937600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Nanophotonics"],"published-print":{"date-parts":[[2026,7,27]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>In this work, we present the design, fabrication, and experimental demonstration of fully polymeric and transparent guided\u2010mode resonant (GMR) metagratings for visible\u2010light operation and integration into augmented reality (AR) systems. The proposed metastructure employs an encapsulated grating architecture in which the periodic pattern is embedded at the substrate\u2013waveguide interface, intrinsically protecting the grating from environmental exposure while preserving the optical functionality. The negative pattern is first transferred by thermal nanoimprint lithography (T\u2010NIL) into a CYTOP substrate and subsequently backfilled with a high\u2010index maN resist, providing the refractive\u2010index contrast required for guided\u2010mode resonance excitation. Structural characterization by SEM and AFM confirms the successful transfer of the designed geometry, high pattern fidelity and structural uniformity, and excellent reproducibility across independently fabricated samples. Spectroscopic ellipsometry reveals three well\u2010defined resonances positioned close to the target RGB wavelengths, in good agreement with RCWA simulations, whereas preliminary angle\u2010dependent reflectance measurements further validate the predicted angular evolution of the guided\u2010mode resonances. The proposed fabrication strategy demonstrates that thermal nanoimprint lithography provides a robust, scalable, and cost\u2010effective route for fabricating transparent polymeric GMR metagratings, enabling their implementation in large\u2010area transparent optical combiners for augmented reality.<\/jats:p>","DOI":"10.1002\/nap2.70224","type":"journal-article","created":{"date-parts":[[2026,7,25]],"date-time":"2026-07-25T07:39:26Z","timestamp":1784965166000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["A Scalable Large\u2010Area Fabrication Strategy for Transparent Polymeric Encapsulated Metagratings"],"prefix":"10.1002","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-5703-829X","authenticated-orcid":false,"given":"Francesca","family":"Filograno","sequence":"first","affiliation":[{"name":"Department of Electrical and Information Engineering Polytechnic University of Bari  Bari 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