Smart reconfigurable metadevices made of shape memory alloy metamaterials
由形状记忆合金超材料制成的智能可重构元器件
形状記憶合金メタマテリアルからなるインテリジェント再構成可能部品
형상 메모리 합금 초재료로 만든 스마트 재구성 부품
Componentes reconfigurables inteligentes hechos de metamateriales de aleación de memoria de forma
Composants reconfigurables intelligents fabriqués à partir de métamatériaux en alliage à mémoire de forme
Интеллектуальные реконструируемые компоненты из метаматериалов из сплава памяти формы
Shiqiang Zhao ¹ ², Yuancheng Fan ¹, Ruisheng Yang ¹, Zhehao Ye ¹, Fuli Zhang ¹, Chen Wang ², Weijia Luo ², Yongzheng Wen ², Ji Zhou ²
¹ MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710129 China
中国 西安 西北工业大学物理科学与技术学院 超常条件材料物理与化学教育部重点实验室
² State Key Lab of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084 China
中国 北京 清华大学材料学院 新型陶瓷与精细工艺国家重点实验室
Reconfigurable metamaterials significantly expand the application scenarios and operating frequency range of metamaterials, making them promising candidates for use in smart tunable device. Here, we propose and experimentally demonstrate that integrating metamaterial design principles with the intrinsic features of natural materials can engineer thermal smart metadevices.
Tunable extraordinary optical transmission like (EOT-like) phenomena have been achieved in the microwave regime using shape memory alloy (SMA). The strongly localized fields generated by designed metadevices, combined with the intense interference of incident waves, enhance transmission through subwavelength apertures.
Leveraging the temperature-responsive properties of SMA, the morphology of the metadevice can be recontructed, thereby modifying its response to electromagnetic waves. The experiments demonstrated control over the operating frequency and transmission amplitude of EOT-like behavior, achieving a maximum transmission enhancement factor of 126.
Furthermore, the metadevices with modular design enable the realization of multiple functions with independent control have been demonstrated. The proposed SMA-based metamaterials offer advantages in terms of miniaturization, easy processing, and high design flexibility. They may have potential applications in microwave devices requiring temperature control, such as sensing and monitoring.
