Xu He-Xiu, Wang Mingzhao, Hu Guangwei, Wang Shaojie, Wang Yanzhao, Wang Chaohui, Zeng Yixuan, Li Jiafang, Zhang Shuang, Huang Wei
Air and Missile Defense College, Air Force Engineering University, Xi'an 710051, China.
Institute of Flexible Electronics, Northwestern Polytechnical University, Xi'an 710072, China.
Research (Wash D C). 2021 Sep 10;2021:9806789. doi: 10.34133/2021/9806789. eCollection 2021.
Many real-world applications, including adaptive radar scanning and smart stealth, require reconfigurable multifunctional devices to simultaneously manipulate multiple degrees of freedom of electromagnetic (EM) waves in an on-demand manner. Recently, kirigami technique, affording versatile and unconventional structural transformation, has been introduced to endow metamaterials with the capability of controlling EM waves in a reconfigurable manner. Here, we report for a kirigami-inspired sparse meta-architecture, with structural density of 1.5% in terms of the occupation space, for adaptive invisibility based on independent operations of frequency, bandwidth, and amplitude. Based on the general principle of dipolar management via structural reconstruction of kirigami-inspired meta-architectures, we demonstrate reconfigurable invisibility management with abundant EM functions and a wide tuning range using three enantiomers (A, B, and C) of different geometries characterized by the folding angle . Our strategy circumvents issues of limited abilities, narrow tuning range, extreme condition, and high cost raised by available reconfigurable metamaterials, providing a new avenue toward multifunctional smart devices.
许多实际应用,包括自适应雷达扫描和智能隐身,都需要可重构的多功能设备以按需方式同时操纵电磁波的多个自由度。最近,折纸技术能够实现通用且非常规的结构转变,已被引入以使超材料具有以可重构方式控制电磁波的能力。在此,我们报道一种受折纸启发的稀疏超结构,基于频率、带宽和幅度的独立操作实现自适应隐身,其结构密度按占用空间计算为1.5%。基于通过受折纸启发的超结构的结构重构进行偶极子管理的一般原理,我们使用三种具有不同折叠角几何形状的对映体(A、B和C)展示了具有丰富电磁功能和宽调谐范围的可重构隐身管理。我们的策略规避了现有可重构超材料所带来的能力有限、调谐范围窄、极端条件和高成本等问题,为多功能智能设备开辟了一条新途径。