一个优化的元结构可以在超宽带角度不敏感的吸收和传输极化转换之间切换:一个理论研究
Zhao Tang1, You-Ran Wu1, Si-Ying Li1
1College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications, Nanjing, 210023, China. hanlor@163.com.
Nanoscale
|April 10, 2024
概括
本研究介绍了一种可在超宽带 (UWB) 吸收和线性到循环 (LTC) 极化转换 (PC) 之间切换的新型元结构 (MS). 这种可调节的太赫兹设备为先进的通信和屏蔽应用提供了潜力.
科学领域:
- 超材料和纳米光子学
- 特拉赫兹 (THz) 技术技术
- 电磁波操纵是一种电磁波操纵.
背景情况:
- 超材料具有独特的电磁性质.
- 可切换设备对于先进的太赫兹应用至关重要.
- 石墨烯的调节性质是动态控制的关键.
研究的目的:
- 提出和理论研究一个优化的元结构 (MS).
- 为了实现可切换的超宽带 (UWB) 角度不敏感的吸收和传输线性到循环 (LTC) 极化转换 (PC).
- 通过化学电位调制探索吸收和极化转换的可调性.
主要方法:
- 使用热交换优化算法优化元结构参数.
- 嵌入式基于石墨烯的过度波形元材料的化学潜力 (μc) 的调制.
- 理论分析吸收,透射率,轴向比率和角稳定性.
主要成果:
- 在正常发病率下,从7-15.45 THz (75.28% RBW) 达到UWB吸收 (>0.9吸收率).
- 实现了UWB LTC PC (>0.9传输率,<3 dB轴比) 的118.8%RBW.
- 证明了显著的角稳定性 (在吸收中高达TE的75°,TM的65°;PC的60°).
- 通过操纵化学潜力,确认了UWB吸收的可调性.
结论:
- 优化的MS功能作为一个多功能可调节的太赫兹调制器.
- 该设计为开发智能太赫兹设备提供了一个参考.
- 潜在的应用包括电磁屏蔽,通信系统和THz调制.
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