| 1 | Review:Chromatic Dispersion Manipulation Based on Optical Metasurfaces显示文摘Metasurfaces are densely arrayed two⁃dimensional(2D)artificial planar metamaterials,which can manipulate the polarization,distribution,and amplitude of light by accurately controlling the phase of the scattering light.The flat metasurface has the potential to substantially reduce the thickness and complexity of the structures and allows ease of fabrication and integration into devices.However,the inherent chromatic aberration of the metasurface originating from the resonant dispersion of the antennas and the intrinsic chromatic dispersion limit their quality.How to effectively suppress or manipulate the chromatic aberration of metalenses has attracted worldwide attention in the last few years,leading to a variety of excellent achievements.Furthermore,utilizing the chromatic dispersion of metasurface to realize special functionalities is also of significant importance.In this review,the most promising recent examples of chromatic dispersion manipulation based on optical metasurface materials are highlighted and put into perspective. | Boyan Fu Xiujuan Zou Tao Li Shuming Wang Zhenlin Wang Shining Zhu | 2020 | Journal of Harbin Institute of Technology(New Series)2020，27，3： | 2 |
| 2 | Integrating the optical tweezers and spanner onto an individual single-layer metasurface显示文摘Optical tweezers(OTs)and optical spanners(OSs)are powerful tools of optical manipulation,which are responsible for particle trapping and rotation,respectively.Conventionally,the OT and OS are built using bulky three-dimensional devices,such as microscope objectives and spatial light modulators.Recently,metasurfaces are proposed for setting up them on a microscale platform,which greatly miniaturizes the systems.However,the realization of both OT and OS with one identical metasurface is posing a challenge.Here,we offer a metasurface-based solution to integrate the OT and OS.Using the prevailing approach based on geometric and dynamic phases,we show that it is possible to construct an output field,which promises a high-numerical-aperture focal spot,accompanied with a coaxial vortex.Optical trapping and rotation are numerically demonstrated by estimating the mechanical effects on a particle probe.Moreover,we demonstrate an on-demand control of the OT-to-OS distance and the topological charge possessed by the OS.By revealing the OT–OS metasurfaces,our results may empower advanced applications in on-chip particle manipulation. | TIANYUE LI XIAOHAO XU BOYAN FU SHUMING WANG BAOJUN LI ZHENLIN WANG SHINING ZHU | 2021 | Photonics Research2021，9，6： | 2 |
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