Smart reconfigurable metadevices made of shape memory alloy metamaterials  

作　　者：Shiqiang Zhao Yuancheng Fan Ruisheng Yang Zhehao Ye Fuli Zhang Chen Wang Weijia Luo Yongzheng Wen Ji Zhou 

机构地区：[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 [2]State Key Lab of New Ceramics and Fine Processing,Department of Materials Science and Engineering,Tsinghua University,Beijing 100084,China.

出　　处：《Opto-Electronic Advances》2025年第2期6-14,共9页光电进展(英文)

基　　金：financial support from the National Key R&D Program of China(Nos.2023YFB3811400,2022YFB3806000);the National Natural Science Foundation of China(Nos.12074314,52202370,52332006);the Aeronautical Science Foundation of China(No.20230018053007);the Science and Technology New Star Program of Shaanxi Province(No.2023KJXX-148);the Fundamental Research Funds for the Central Universities,and China Postdoctoral Science Foundation(No.2023T160359).

摘　　要：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.

关 键 词：METAMATERIALS extraordinary optical transmission shape memory alloy temperature tunability 

分 类 号：TB34[一般工业技术—材料科学与工程]