Academic Journal
Active infrared tuning of metal–insulator-metal resonances by VO2 thin film
| العنوان: | Active infrared tuning of metal–insulator-metal resonances by VO2 thin film |
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| المؤلفون: | Emilija Petronijevic, Maria Cristina Larciprete, Marco Centini, Lucilla Pronti, Vincenzo Aglieri, Luca Razzari, Andrea Toma, Roberto Macaluso, Roberto Li Voti, Concita Sibilia |
| المصدر: | Scientific Reports, Vol 14, Iss 1, Pp 1-8 (2024) |
| بيانات النشر: | Nature Portfolio, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Medicine LCC:Science |
| مصطلحات موضوعية: | Plasmonics, Phase change materials, Metamaterials, VO2, Medicine, Science |
| الوصف: | Abstract VO2 is a promising phase change material offering a large contrast of electric, thermal, and optical properties when transitioning from semiconductor to metallic phase. Here we show that a hybrid metamaterial obtained by proper combination of a VO2 layer and a nanodisk gold array provides a tunable plasmonic gap resonance in the infrared range. Specifically, we have designed and fabricated a metal–insulator-metal gap resonance by inserting sub-wavelength VO2 film between a flat gold layer and a gold nanodisk resonator array. The resonance of the hybrid metamaterial is centered in the useful 3–5 μm range when VO2 is in its semiconductor state. The experimental study highlights a monotonical spectral tuning of the resonance when increasing temperature up to 50 °C above the room temperature, providing a continuous resonance shift of almost 1 μm in the mid-infrared range. Wavelength range and intensity tunability can be further optimized by modifying the thicknesses of the layers and metamaterial parameters. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2045-2322 |
| Relation: | https://doaj.org/toc/2045-2322 |
| DOI: | 10.1038/s41598-024-75430-0 |
| URL الوصول: | https://doaj.org/article/2420e4f7d84e4be3a9d99c0f0975ca6c |
| رقم الانضمام: | edsdoj.2420e4f7d84e4be3a9d99c0f0975ca6c |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20452322 |
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| DOI: | 10.1038/s41598-024-75430-0 |