机械调节的电磁元材料基于具有特殊重新配置能力的紧张旋转合单元链
Haishan Tang1,2, Shuchang He1, Jie Tao3
1Huanjiang Laboratory, Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, State Key Laboratory of Brain-Machine Intelligence, Department of Engineering Mechanics, Zhejiang University, Zhejiang, 310027, China.
Small methods
|September 26, 2025
概括
这项研究引入了一种新型的超材料,通过简单的拉伸,使分环共振器 (SRR) 的大,超过120°的外平面旋转成为可能. 这一突破提高了先进电磁应用的机械调制性.
科学领域:
- 超材料和纳米技术
- 电磁学和光学 电磁学和光学
- 机械工程 机械工程
背景情况:
- 机械调节的电磁 (EM) 材料对于先进的应用至关重要.
- 控制分环共振器 (SRR) 的外平面旋转是调制性的关键.
- 通过简单的拉伸,在保持共振器完整性的同时,实现大角度旋转是具有挑战性的.
研究的目的:
- 设计和演示一个机械调节的EM超材料,具有实质性的SRR外平面旋转.
- 调查拟议结构中的变形机制和应变旋转关系.
- 探索超材料对偏振波的调制能力.
主要方法:
- 使用平行链的张力旋转单元制造超材料.
- 理论分析以了解变形力学.
- 数字模拟 (例如,有限元法) 来建模行为.
- 对线性和圆性极化波的传输特性进行实验性表征.
主要成果:
- 通过简单的拉伸,证明了SRRs超过120°的外平面刚性旋转.
- 量化了拉伸力和SRR旋转角度之间的关系.
- 观察到波传输的广泛调制,包括TE波的两阶段行为.
- 在伸展过程中报告了一种独特的零正零负圆形二元化 (CD) 配置.
- 通过结构重构,展示了可调节的共振频率,并保留了CD的特征.
结论:
- 拟议的超材料为高可调性和多功能性提供了有价值的设计策略.
- 张力旋转单元能够实现前所未有的大角度旋转,克服现有设计的局限性.
- 能够广泛调节偏振波传输并保持奇拉特异模式的能力突出了其对先进电磁设备的潜力.
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