1. Microfluid-enabled fine tuning of circular dichroism from chiral metasurfaces
- Author
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Dong Xiao, Shengtao Yin, Haitao Dai, Eng Huat Khoo, Dan Luo, Zhen Yin, Shouzhen Jiang, Yan Jun Liu, Ruiheng Peng, Xiaoguo Fang, and Jianxun Liu
- Subjects
Fine-tuning ,Circular dichroism ,Materials science ,Nanostructure ,Acoustics and Ultrasonics ,business.industry ,Microfluidics ,Polarimetry ,Physics::Optics ,Condensed Matter Physics ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Condensed Matter::Materials Science ,Optoelectronics ,business ,Chirality (chemistry) - Abstract
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.
- Published
- 2019
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