【摘要】 红外辐射材料在红外信息成像、辐射制冷、红外伪装等领域都有着广阔的应用前景。传统的红外辐射材料在整个红外波段具有一致的发射率。发射率调控成为了红外辐射材料发展的研究热点。基于红外辐射理论，设计了基于一维光子晶体的宽带光谱选择性红外辐射薄膜，实现了红外辐射材料的发射率选择性调控。设计构建了一维光子晶体（TiO₂/SiO₂）⁴膜层结构。其在中波红外3～5μm的平均吸收率低至0.03,在长波红外8～14μm的平均吸收率高达0.89。探究了其电磁能量损耗情况，3～5μm波段基本没有电磁损耗，8～10μm波段的电磁损耗是SiO₂材料的作用，11～14μm波段的电磁损耗是TiO₂材料的作用。最后分析了膜层厚度以及周期数对其光谱性能的调控作用。这一结果为一维光子晶体的选择性红外辐射设计提供了方法，在隐身兼容散热方面具有潜在的应用价值。更多还原

【Abstract】 Infrared radiation materials have broad application prospects in fields such as infrared information imaging, radiation cooling, and infrared camouflage.Traditional infrared radiation materials have consistent emissivity throughout the entire infrared spectrum.Emissivity control has become a research hotspot in the development of infrared radiation materials.Based on the theory of infrared radiation, a broadband spectral selective infrared radiation film based on one-dimensional photonic crystals is designed, achieving selective control of the emissivity of infrared radiation materials.A one-dimensional photonic crystal（TiO₂/SiO₂）⁴ film structure is designed and constructed.The average absorption rate is as low as 0.03 in the mid wave infrared range of 3～5 μm, and as high as 0.89 in the long wave infrared range of 8～14 μm.The electromagnetic energy loss is investigated, revealing that negligible electromagnetic loss occurs in the 3～5μm band.And electromagnetic loss in the 8～10 μm band is attributed to the SiO₂ material, and that in the 11～14 μm band is due to the effect of TiO₂ material.Finally, the regulatory effects of film thickness and period number on its spectral properties are analyzed.These results provide a method for the design of selective infrared radiation in one-dimensional photonic crystals and hold potential application value in stealth compatible heat dissipation.更多还原