Active-metasurfaces to realize tunable resonances and focusing

Taimoor Naeem, Hafiz Saad Khaliq, Tauseef Tauqeer, Muhammad Zubair, Muhammad Qasim Mehmood

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations


In this paper, we present electrically tunable metasurfaces that exhibit multifunctional characteristics in the visible domain by exploiting electro-optic effect (EO). The metasurfaces consist of an array of Barium Titanate (BTO) meta-atoms on an Indium Titanium oxide (ITO) coated substrate. The resonance wavelength of the metasurface can be tuned by varying the electric field that eventually alters the refractive index of material. The tunability of resonance wavelength is evaluated by a hologram that appears at the desired wavelength by changing its voltage. Furthermore, a zoom metalens is presented with focal length shift by applying different electric fields at the wavelengths of 488, 532 and 633 in nm. The proposed idea can be useful for realizing tunable integrated systems.
Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
ISBN (Print)9781510644304
StatePublished - Jan 1 2021
Externally publishedYes


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