يعرض 1 - 18 نتائج من 18 نتيجة بحث عن '"Remarkable properties"', وقت الاستعلام: 0.49s تنقيح النتائج
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    المؤلفون: Reig, Robin

    مصطلحات موضوعية: Dioxyde de vanadium (VO2), Dopage, Nanoparticule, Plasmonique, Dépôt par ablation laser pulsé (PLD), Résonance plasmon de surface localisé (LSPR) Illuminated gold nanoparticles prove to be efficient nanometric heat sources due to the localized surface plasmon resonance (LSPR) phenomenon, which allows them to convert absorbed light into heat. Vanadium dioxide (VO2), a thermochromic material, demonstrates a notable insulator-to-metal phase transition at the transition temperature (TMIT) of 68°C, entailing considerable fluctuations in electrical resistivity and infrared transmittance, To lower the phase transition temperature closer to room temperature, a doping strategy is adopted. Bore emerges, following theoretical predictions based on Density Functional Theory (DFT), as a promising dopant to reduce TMIT. This pioneering work investigates the coupling between gold nanoparticles and films of pure and bore-doped VO2 on transparent substrates. Samples are synthesized using the pulsed laser ablation (PLD) technique, in both « single beam » and « cross beam » configurations, to achieve thin films with remarkable properties. These films are coupled with various arrays of gold nanoparticles, and their optical response is studied. Analyses reveal that bore doping significantly lowers the phase transition, bringing it closer to room temperature, a result that underscores the interest of doping optimization for future applications, vanadium dioxide (VO2), Doping, Nanoparticle, Plasmonics, Pulsed laser deposition (PLD), Localized surface plasmon resonance (LSPR)

    وصف الملف: application/pdf

    Relation: https://espace.inrs.ca/id/eprint/16216/1/Reig-RMA-M-Juillet2024-EMBARGO%202025-07-30.pdf; Reig, Robin (2024). Synthèse et caractérisation de couches minces de vo2 dopées au bore couplées avec des nanoparticules plasmoniques. Thèse. Q, Université du Québec, Institut national de la recherche scientifique, Maîtrise en sciences de l'énergie et des matériaux, 125 p.

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