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