Theoretical simulation and mechanisms of SmNiO3-based phase change metamaterial for mid-infrared dynamic thermal control

被引：0
作者：
Hua W. [1 ,2 ]
Li J. [1 ,2 ]
Du Y. [1 ]
Wang H. [1 ,2 ]
Zhou H. [1 ,2 ,3 ]
机构：
[1] State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai
[2] Shenzhen Research Institute, Shanghai Jiao Tong University, Shenzhen
[3] Future Materials Innovation Center, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai
来源：
Optik | 2024年 / 296卷
基金：
中国国家自然科学基金;
关键词：
Dynamic thermal control; Metamaterial; Slow-light effect; SmNiO[!sub]3[!/sub;
D O I：
10.1016/j.ijleo.2023.171556
中图分类号：
学科分类号：
摘要：
Dynamic thermal emission control has gained increasing attention across diverse fields. Among phase change materials (PCMs), SmNiO3 has attracted many interests because of its fast phase transition and non-volatile properties. However, constructing an emissivity modulation metamaterial with angle stability performance is still rather challenging. In this work, we propose three kinds of SmNiO3-based metamaterials for mid-infrared emissivity dynamic modulation, specifically a trapezoidal metamaterial consisting of alternating SmNiO3 and Si multi-layer thin films and two modified grating metastructures, realizing an average emissivity modulation Δεaver of 0.42–0.45 in 5–16 µm. It is confirmed that the magnetic resonance stimulated inside the metamaterial is because of the slow-light effect. This work provides theoretical fundamentals for the design of dynamic thermal control metamaterials and benefits applications in the fields of infrared emission modulation. © 2023 Elsevier GmbH
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