论文标题
由嵌入式光学元面供电和指导的微观metavehicles
Microscopic Metavehicles Powered and Steered by Embedded Optical Metasurfaces
论文作者
论文摘要
纳米结构的介电元面积提供了前所未有的机会来操纵光线，并在撞击波前的任意相梯度上印记。这导致实现了一系列对经典光学组件（例如镜片，波动板和阳极）的平面类似物。然而，与相操作相关的线性和角光学动量的变化也导致先前无法开发的力作用于元图本身。在这里，我们表明这些光机械效应可用于构建光学磁轴 - 微观颗粒，这些微观颗粒可以在低功率平面波照明下长距离行驶，同时通过入射光的极化进行操纵。我们以复杂的模式，自我校正运动以及作为微观货物（包括单细胞生物）的运输车辆的应用来展示运动。大量可能的光学跨面证明了具有特殊功能行为的各种元式壳的前景。
Nanostructured dielectric metasurfaces offer unprecedented opportunities to manipulate light by imprinting an arbitrary phase-gradient on an impinging wavefront. This has resulted in the realization of a range of flat analogs to classical optical components like lenses, waveplates and axicons. However, the change in linear and angular optical momentum associated with phase manipulation also results in previously unexploited forces acting on the metasurface itself. Here, we show that these optomechanical effects can be utilized to construct optical metavehicles - microscopic particles that can travel long distances under low-power plane-wave illumination while being steered through the polarization of the incident light. We demonstrate movement in complex patterns, self-correcting motion, and an application as transport vehicles for microscopic cargo, including unicellular organisms. The abundance of possible optical metasurfaces attests to the prospect of developing a wide variety of metavehicles with specialized functional behavior.
