在不对称的异常点周围非互惠的热Fizeau拖动辐射
Mengqi Liu1,2, Shuihua Yang2, Weijin Chen2
1Shanghai Jiao Tong University, Institute of Engineering Thermophysics, MOE Key Laboratory for Power Machinery and Engineering, School of Mechanical Engineering, Shanghai 200240, China.
Physical review letters
|October 5, 2025
概括
研究人员使用石墨烯和特殊点 (EP) 展示了无磁铁的红外非互惠热辐射. 这种方法克服了以前技术的局限性,为先进的光子设备提供可调节的光谱和角度范围.
科学领域:
- 光子学 是一个光子学.
- 凝聚物质物理学 凝聚物质物理学
- 非赫米特物理学 非赫米特物理学
背景情况:
- 以前的无磁红外非互惠热辐射方法面临着极端温度,高调制频率和有限的光谱/角度范围等挑战.
- 异常点 (EP) 是非赫米特系统中独特的退化,有可能产生新的光学现象.
研究的目的:
- 在非对称的特殊点 (EP) 周围展示远场非互惠的Fizeau热阻辐射.
- 克服现有的无磁红外非互惠方法的局限性.
主要方法:
- 在介电周期纳米结构上使用石墨烯板.
- 研究了参数空间 (w-θ) 中对称散射EP对的生成和演变.
- 利用了来自漂移电子的Fizeau阻力效应,以不对称地重新分配EP.
主要成果:
- 通过修改介电光学指数,在整个角度范围内证明可调整的费米弧长.
- 在低电子漂移速度下实现了EP的不对称再分配,从而实现了非相互的发射率和吸收率.
- 观察到波长集成热非互惠的数量级增加.
结论:
- 非互惠和EP之间的协同作用为无磁红外非互惠热辐射提供了一个新的方法.
- 这项工作为非赫密斯物理学,非互惠光学和非互惠热光学提供了新的见解.
- 展示的方法允许可调节的光谱和角度控制热非互惠.
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