This proposal introduces a triple-layered nanophotonic metamaterial stack comprising refractory titanium nitride nanodisks, aluminum oxide dielectric spacers, and an optically thick tungsten substrate. By combining Localized Surface Plasmon Resonance (LSPR), Fabry-Perot cavity modes, and coupled resonances, the proposed architecture is designed to capture over 97% of incoming solar and near-infrared light while suppressing mid-IR thermal emissions to under 4%. Using non-ecotoxic, thermally stable materials, this work aims to deepen our understanding of nanoscale light-matter interactions and pave the way for more resilient thermophotovoltaic systems and energy-harvesting coatings.
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Biswas Annik (2026) studied this question.
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