Silver Nanowires for Reconfigurable Bloch Surface Waves,ACS Nano

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Silver Nanowires for Reconfigurable Bloch Surface Waves
ACS Nano ( IF 15.8 ) Pub Date : 2017-09-20 00:00:00 , DOI: 10.1021/acsnano.7b05638
Douguo Zhang ₁ , Ruxue Wang ₁ , Yifeng Xiang ₁ , Yan Kuai ₁ , Cuifang Kuang ₂ , Ramachandram Badugu ₃ , Yingke Xu ₄ , Pei Wang ₁ , Hai Ming ₁ , Xu Liu ₂ , Joseph R. Lakowicz ₃

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The use of a single silver nanowire as a flexible coupler to transform a free space beam into a Bloch surface wave propagating on a dielectric multilayer is proposed. Based on Huygens’ Principle, when a Gaussian beam is focused onto a straight silver nanowire, a Bloch surface wave is generated and propagates perpendicular to the nanowire. By curving the silver nanowire, the surface wave can be focused. Furthermore, the spatial phase of the incident laser beam can be actively controlled with the aid of a spatial light modulator, resulting in the reconfigurable or dynamically controlled Bloch surface waves. The low cost of the chemically synthesized silver nanowires and the high flexibility with regard to tuning the spatial phase of the incident light make this approach very promising for various applications including optical micromanipulation, fluorescence imaging, and sensing.

中文翻译：

银纳米线用于可重构Bloch表面波

提出了使用单个银纳米线作为柔性耦合器将自由空间光束转换为在电介质多层上传播的布洛赫表面波的方法。根据惠更斯原理，当高斯光束聚焦到一条直线的银纳米线上时，会产生Bloch表面波，并且该波垂直于纳米线传播。通过弯曲银纳米线，可以聚焦表面波。此外，可以借助于空间光调制器来主动控制入射激光束的空间相位，从而产生可重构或动态控制的Bloch表面波。化学合成的银纳米线的低成本以及在调节入射光的空间相位方面的高度灵活性，使得这种方法对于包括光学显微操作，

更新日期：2017-09-20

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