Biodegradable and Insoluble Cellulose Photonic Crystals and Metasurfaces

• DOI: 10.1021/acsnano.0c03224
• Publication Date: 2020-06-19T18:31:38Z
• Authors: Vincenzo Caligiuri; Giacomo Tedeschi; Milan Palei; Mario Miscuglio; Beatriz Martin-Ga...; Susana Guzman-Puyol; Mehdi Keshavarz H...; Anders Kristensen; Athanassia Athana...; Roberto Cingolani; Volker J. Sorger; Marco Salerno; Francesco Bonaccorso; Roman Krahne; José Alejandro He...
• Keywords: Structural Coloration

The replacement of plastic with eco-friendly and biodegradable materials is one the most stringent environmental challenges. In this respect, cellulose stands out as a polymer. However, significant challenge to obtain for high-end photonics that are robust in humid environments. Here, we demonstrate fabrication high-quality micro- nanoscale photonic plasmonic structures via replica molding using pure blended version nonedible agro-wastes. Both soil seawater according ISO 17556 standard. films transparent vis–NIR spectrum, having refractive index similar glass. microstructured crystals show diffractive properties maintained under extended exposure water. Nanostructuring transforms it metasurface manifesting bright structural colors. A subsequent deposition Ag endowed used produce colors surface-enhanced Raman scattering.