Biomimetic ultra-broadband mid-infrared absorber Based on Ti-SiO2 hierarchical pyramid metasurface inspired by cicada wing nanostructures

IF 3.8 3区物理与天体物理 Q2 INSTRUMENTS & INSTRUMENTATION

Infrared Physics & Technology Pub Date : 2026-05-01 Epub Date: 2026-03-03 DOI:10.1016/j.infrared.2026.106496

Fangrong Zhang , Zhaobo Song , Pan Li , Guoqiang Lan

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引用次数: 0

Abstract

Efficient control of infrared radiation is critical for thermophotovoltaics, infrared stealth, and optoelectronic detection. Conventional absorbers, however, are typically restricted by narrow bandwidth, strong angular dependence, and poor thermal stability. This work presents a theoretical investigation of a biomimetic metasurface absorber inspired by cicada wing nanostructures, comprising a SiO₂ pyramidal core coated with a Ti-SiO₂-Ti multilayer shell. Finite-difference time-domain (FDTD) simulations reveal an average absorptance of 95.64 % over the broad wavelength range of 1.03–8.97 μm, including a 7.94 μm bandwidth with absorptance exceeding 90 %. The exceptional performance originates from synergistic mechanisms-gradient impedance matching, localized surface plasmon resonance, and magnetic resonance-yielding polarization insensitivity, wide-angle stability, and robust thermal performance. Systematic parameter sweeps further confirm excellent fabrication tolerance. Compared with state-of-the-art designs, the proposed absorber demonstrates superior overall metrics, positioning it as a highly promising candidate for thermophotovoltaics, infrared stealth, and the recovery of medium- to low- temperature industrial waste heat.

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受蝉翅纳米结构启发的Ti-SiO2分层金字塔超表面仿生超宽带中红外吸收体

红外辐射的有效控制对热光电、红外隐身和光电子探测至关重要。然而，传统的吸收器通常受到窄带宽，强角依赖性和热稳定性差的限制。本文提出了一种仿生超表面吸收体的理论研究，该吸收体受蝉翼纳米结构的启发，由覆盖有Ti-SiO2-Ti多层外壳的SiO2锥体核组成。时域有限差分（FDTD）仿真结果表明，在1.03 ~ 8.97 μm的宽波长范围内，平均吸光度为95.64%，其中7.94 μm的带宽吸光度超过90%。优异的性能源于协同机制——梯度阻抗匹配、局部表面等离子体共振和磁共振——产生极化不敏感、广角稳定性和强大的热性能。系统参数扫描进一步证实了卓越的制造公差。与最先进的设计相比，所提出的吸收剂具有优越的总体指标，将其定位为热光伏，红外隐身和中低温工业废热回收的极有前途的候选者。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Infrared Physics & Technology 物理-光学

CiteScore

5.70

自引率

12.10%

发文量

400

审稿时长

67 days

期刊介绍： The Journal covers the entire field of infrared physics and technology: theory, experiment, application, devices and instrumentation. Infrared'' is defined as covering the near, mid and far infrared (terahertz) regions from 0.75um (750nm) to 1mm (300GHz.) Submissions in the 300GHz to 100GHz region may be accepted at the editors discretion if their content is relevant to shorter wavelengths. Submissions must be primarily concerned with and directly relevant to this spectral region. Its core topics can be summarized as the generation, propagation and detection, of infrared radiation; the associated optics, materials and devices; and its use in all fields of science, industry, engineering and medicine. Infrared techniques occur in many different fields, notably spectroscopy and interferometry; material characterization and processing; atmospheric physics, astronomy and space research. Scientific aspects include lasers, quantum optics, quantum electronics, image processing and semiconductor physics. Some important applications are medical diagnostics and treatment, industrial inspection and environmental monitoring.