支持深度神经网络的双功能宽带吸收器.
Jing Li1,2,3,4,5, BinYi Ma1,3,4,5, Huanyang Chen2
1School of Instrument and Electronics, North University of China, Taiyuan, 030051, China.
Scientific reports
|October 25, 2024
概括
研究人员使用石墨烯和二氧化开发了一种新的双功能太赫兹元材料吸收器. 该设备提供可切换和调节的宽带完美吸收,对于高级THz应用至关重要.
科学领域:
- 超材料是什么?超材料是什么?
- 特拉赫兹 (THz) 技术技术
- 纳米光子学 纳米光子学
背景情况:
- 对于可切换和可调节的宽带完美吸收器的需求日益增长,用于THz应用,如调制,能量收集和光谱学.
- 现有的吸收器往往缺乏双重功能 (交换和调) 或宽带宽.
- 超材料为设计新型电磁装置提供了一个有前途的平台.
研究的目的:
- 介绍一款双功能的太赫兹元材料吸收器,能够实现可切换和可调节的宽带完美吸收.
- 用深度神经网络 (DNN) 支持的模拟来演示设备的性能.
- 探索THz技术的潜在应用.
主要方法:
- 设计和模拟一个采用石墨烯和二氧化瓦纳 (VO2) 的太赫兹元材料吸收器.
- 使用深度神经网络 (DNN) 进行分析和支持.
- 在不同的VO2阶段 (绝缘和金属) 和不同的石墨烯费米水平中研究吸收器的反应.
主要成果:
- 在VO2的绝缘 (9.319.77THz,61.3%的分段带宽) 和金属 (8.449.75THz,174.6%的分段带宽) 阶段实现了双宽带完美吸收 (>90%).
- 通过调节石墨烯的费米水平,证明了吸收强度 (48100%) 的连续电调.
- 由于对称的设计,在广泛的发生角度中表现出对 TE 和 TM 波的极化不敏感.
结论:
- 拟议的双功能THz元材料吸收器有效地实现可切换和可调节的宽带完美吸收.
- 该设计显示了各种THz应用的巨大潜力,包括切换,电磁屏蔽,隐形技术,过和传感.
- 与DNNs的集成提供了一个强大的方法来分析和优化这些先进的超材料设备.
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