论文标题
介电janus粒子中等离子体钩的实验验证
Experimental verification of a plasmonic hook in a dielectric Janus particle
论文作者
论文摘要
我们报告了对表面等离子体 - 孔孔（SPP）波的新弯曲等离子束（pH）的第一个实验性观察。我们证明，与需要复杂的技术需要复杂的技术来补偿波载体不匹配的空气中，可以在梯形介电微观结构中实现SPP pH效应，并相对易于制造。使用数值分析，我们预测了pH现象，优化了微观结构，然后通过振幅和相位分辨的散射扫描在1530-1570 nm的电信波长处确认了SPP pH的存在。实验结果与我们的预测是合理的一致性。重要的是，与通风的血浆束相比，SPP pH证明了SPP波有史以来最小的曲率半径，提供了许多有用的应用，从纳米级内的纳米粒子操纵向生物感应的传播的许多有用的应用。
We report on a very first experimental observation of a new curved plasmonic beam, a plasmonic hook (PH), for surface plasmon-polariton (SPP) waves. We demonstrate that the SPP PH effect could be realized within a trapezoidal dielectric microstructure with the relative ease of fabrication compared to the generation of the Airy SPP waves which require complex techniques to compensate the wave vectors mismatch. Using numerical analysis, we predicted the PH phenomenon, optimized the microstructure and then confirmed the SPP PH existence via amplitude and phase-resolved scattering scanning near-field optical microscopy at the telecom wavelengths of 1530-1570 nm. The experimental results are in reasonable agreement with our predictions. Importantly, the SPP PH demonstrates the smallest radius of curvature ever recorded for SPP waves compared to that for the Airy-family plasmonic beams providing many useful applications spreading from nanoparticles manipulation toward bio-sensing within a nanoscale.
