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Title: C-MOOVO: Combined Molibdenum trioxide/Vanadium dioxide structures for a new class of tunable photonic devices in the mid infrared. 

Funding programme: PRIN 2022 Funded by the European Union - Next Generation EU – PNRR, Mission 4 “Education and Research” - Component C2 Investment 1.1 “Fund for the National Research Program and Projects of Significant National Interest (PRIN)”, Project code: 2022ZRN4LX; CUP: B53D23009060006.

Scientific Coordinator: Prof. Maria Cristina Larciprete (Sapienza, Università di Roma).

Research Units:

1. Sapienza, Università di Roma, Roma.
2. Università degli Studi di Palermo, Palermo (Local principal investigator: Prof. Roberto Macaluso).

Abstract: The research project focuses on the design, fabrication and characterisation of MoO₃/VO₂ based metamaterials and metasurfaces to be used in integrated elements for light polarization control and sensing in the Mid infrared (IR). Large area MoO₃ films, synthesised by pulsed laser deposition (PLD), will be first optimised to maximize the degree of polarization tuning and the dynamic range of reflectance value at resonance frequencies. Then, a dynamic tuning/control of polarization will be investigated by combining MoO3 and VO2 films, the latter allowing the shifting and switching of phonon resonances at the MoO3/VO2 interface, through its semiconductor to metal phase transition with temperature. All deposited films will be characterised by XRD, SEM, Raman spectroscopy and FTIR measurements.

Results so far achieved have been published in peer-reviewed journals and presented at National and International conferences:

Journal papers:

- A. Bile, D. Ceneda, S. Vaghefi Esfidani Maryam, D. Scirè, G. Buscarino, M. Mosca, D. Persano Adorno, R. Macaluso, R. Li Voti, C. Sibilia, T. G. Folland, K. Aydin, M. Centini, M. C. Larciprete, Room-Temperature Tuning of Mid-Infrared Optical Phonons and Plasmons in W-doped VO₂ thin films, Optical Materials, 154, 115732 (2024). DOI: https://doi.org/10.1016/j.optmat.2024.115732

- E. Petronijevic, M. C. Larciprete, M. Centini, L. Pronti, V. Aglieri, L. Razzari, A. Toma, R. Macaluso, R. Li Voti, and C. Sibilia, Active infrared tuning of metal insulator-metal resonances by VO2 thin film, Scientific Reports, 14, 25324 (2024). DOI: https://doi.org/10.1038/s41598-024-75430-0

Conference papers:

- R. Macaluso, M. Mercurio, F. V. Lupo, N. Timpanaro Pirrina, D. Persano Adorno, I. Crupi, M. Mosca, M. Centini, M. P. Casaletto, and M. C. Larciprete, Pulsed laser deposited alpha-MoO₃ thin films for mid-infrared Photonic applications, 10^th IEEE Optoelectronics Global Conference (OGC), Shenzhen (China), 9-12 September 2025. Paper ID: 2760. DOI: 10.1109/OGC66041.2025.11262102 ; https://hdl.handle.net/10447/695548

- Daniele Ceneda, Martina Mercurio, Dominique Persano Adorno, Roberto Macaluso, Marco Centini, Maria Cristina Larciprete, Combined molibdenum trioxide/vanadium dioxide multilayers for a new class of tunable photonic devices in the mid-infrared, SPIE Optics + Photonics Exhibition, San Diego, 3-8 August 2025.Proc. of SPIE Vol. 13578, 135780B,2025. Active Photonic Platforms (APP) 2025, edited by Ganapathi S. Subramania, Stavroula Foteinopoulou. https://doi.org/10.1117/12.3066194 ; https://iris.unipa.it/item/preview.htm?uuid=4c7d3ee1-5572-4174-8d42-ae19fdcba6da&mode=complete

- R. Macaluso, A. Bile, D. Ceneda, D. Scirè, G. Buscarino, M. Mosca, D. Persano Adorno, I. Crupi, M. Vaghefi Esfidani, R. Li Voti, C. Sibilia, T. G. Folland, K. Aydin, M. Centini and M. C. Larciprete, W-doped vanadium dioxide films by pulsed laser deposition for IR Photonics, Proceedings of the 55^th Annual Meeting of the Associazione Società Italiana di Elettronica (SIE2024), June 26 – 28, 2024, Genova (Italy), Paper 18. https://iris.unipa.it/item/preview.htm?uuid=03c365fc-94f5-41b4-aab0-b543f1f986d4

- Daniele Ceneda, Alessandro Bile, S. Maryam Vaghefi Esfidani, Daniele Scirè, Mauro Mosca, Dominique Persano Adorno, Roberto Macaluso, Roberto Li Voti, Concita Sibilia, Thomas G. Folland, Koray Aydin, Marco Centini, and Maria Cristina Larciprete, Modulating Room Temperature Mid-IR Properties in W-Doped VO2 Films, European Optical Society Annual Meeting (EOSAM)24, 9-13 September 2024, Napoli, Italy. https://iris.unipa.it/item/preview.htm?uuid=a3c0a88f-ed2f-4de8-b1b0-8cb8e312d034