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A large-area metamaterial thermal emitter is fabricated using facile, lithography-free techniques. The device is composed of conductive oxides, refractory ceramics, and noble metals and shows stable, selective emission after exposure to 1173 K for 22 h in oxidizing and inert atmospheres. The results indicate that the metamaterial can be used to achieve high-performance thermophotovoltaic devices for applications such as portable power generation.
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Coppens et al. (2016) studied this question.
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