Microfluid-enabled fine tuning of circular dichroism from chiral metasurfaces

Microfluid-enabled fine tuning of circular dichroism from chiral metasurfaces
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手性超表面圆二色性的微流体微调

DOI:
10.1088/1361-6463/ab3129
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发表时间:
2019-07
期刊:
Journal of Physics D: Applied Physics
影响因子:
--
通讯作者:
Liu Yan Jun
Liu Yan Jun
中科院分区:
其他
文献类型:
--
作者:
Peng Ruiheng;Liu Jianxun;Xiao Dong;Fang Xiaoguo;Yin Shengtao;Yin Zhen;Khoo Eng Huat;Luo Dan;Jiang Shouzhen;Dai Haitao;Liu Yan Jun

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我们提出并数值演示了一个微流体使自旋选择性手性超颖表面与可调圆二色性。该手性超颖表面由周期性排列的类γ离子多层纳米结构组成。借助微流控技术,可以实现手性超颖表面圆二色性的微调。数值计算结果表明,可以实现40 nm的宽调谐范围,而圆二色性只显示出轻微的下降。这样一个拟议的设备可能是潜在的有用的手性检测,极化成像,和自旋通信。
We propose and numerically demonstrate a microfluid-enabled spin-selective chiral metasurface with tunable circular dichroism. The chiral metasurface consists of periodic array of gammadion-like multilayer nanostructures. With the help of microfluidic technology, fine tuning of circular dichroism from the chiral metasurface can be achieved. Numerical results show that a broad tuning range of 40 nm can be achieved, while the circular dichroism only shows a slight decrease. Such a proposed device could be potentially useful for chirality detection, polarimetric imaging, and spin-communications.
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