Tunable beam deflection based on plasmonic resonators mounted freestanding thermoresponsive hydrogel  

作　　者：Ata Ur Rahman Khalid Juan Liu Naeem Ullah Shiqi Jia Ata Ur Rahman Khalid;刘娟;Naeem Ullah;贾世琪(Beijing Engineering Research Center for Mixed Reality and Advanced Display,School of Optics and Photonics,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]Beijing Engineering Research Center for Mixed Reality and Advanced Display,School of Optics and Photonics,Beijing Institute of Technology,Beijing 100081,China

出　　处：《Chinese Optics Letters》2020年第6期67-70,共4页中国光学快报（英文版）

基　　金：This work was supported by the National Key R&D Program of China(No.2017YFB1002900);the National Natural Science Foundation of China(NSFC)(Nos.61575024,61420106014,and 61975014);the United Kingdom Government’s Newton Fund.

摘　　要：We propose and numerically demonstrate a dynamic beam deflector based on plasmonic resonator loaded thermoresponsive freestanding hydrogel that swells and collapses in water by temperature.For this purpose,we utilize four-step phase gradients mounted on freestanding hydrated hydrogel.For normal incidence,linearly orthogonal light deflects to 19.44°in the collapsed state and 14.40°in the swollen state of hydrogel.Furthermore,the light deflects at a third angle of 12.29°when the solvent changes from water to ethanol.It is expected that our metadesign will provide a platform for dynamic holography,active lensing,data storage,and anticounterfeiting.

关 键 词：tuning beam deflector HYDROGEL 

分 类 号：O53[理学—等离子体物理]