发表机构
University of Mons; University of Namur; University of Exeter（蒙斯大学; 南纳慕尔大学; 埃克塞特大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究受马氏凤蝶翅鳞光子结构启发，通过几何缩放设计宽带中红外吸收体，实现391%吸收增强，为热辐射管理提供新策略。
AI 中文摘要
日益增长的环境和能源相关挑战促使人们寻求能够提高能量回收和资源利用效率的技术。仿生光子结构通过利用自然系统中发现的光学机制，为开发高效红外吸收体提供了有前景的机会。在这项工作中，我们提出了一种基于Troides magellanus马氏凤蝶高度吸收性翅鳞的宽带中红外吸收体的仿生设计与优化方法。生物结构的特征几何被重新缩放和调整，以将其光学响应从可见光范围移至红外光谱范围。数值模拟用于研究主要几何参数对光谱吸收率的影响，并确定优化配置。优化后的结构相比平坦钢参考实现了391%的吸收增强。改进的光学响应归因于优化的高纵横比几何，该几何增强了多次散射和光捕获，从而增加了有效光-物质相互作用面积。这些结果证明了仿生几何缩放作为设计高效红外吸收体和定制其光谱响应以用于热辐射管理和红外光子学应用的工程策略的潜力。
英文摘要
Growing environmental and energy-related challenges have intensified the search for technologies capable of improving energy recovery and resource efficiency. Bioinspired photonic structures offer promising opportunities for the development of efficient infrared absorbers by exploiting optical mechanisms found in natural systems. In this work, we present a bioinspired approach for the design and optimization of a broadband mid-infrared absorber based on the highly absorbing wing scales of the Troides magellanus Magellan birdwing butterfly. The characteristic geometry of the biological structure is rescaled and adapted to shift its optical response from the visible to the infrared spectral range. Numerical simulations are used to investigate the influence of the main geometrical parameters on the spectral absorptance and to identify an optimized configuration. The optimized structure achieves an absorption enhancement of 391% compared with a flat steel reference. The improved optical response is attributed to the optimized high-aspect-ratio geometry, which enhances multiple scattering and light trapping, thereby increasing the effective light-matter interaction area. These results demonstrate the potential of bioinspired geometric scaling as an effective strategy for engineering efficient infrared absorbers and tailoring their spectral response for thermal radiation management and infrared photonic applications.
Comments15 pages, 7 figures
