Hegde, Ravi SadanandaRavi SadanandaHegdePanse, Kaustubh S.Kaustubh S.Panse2025-08-302025-08-302016-04-0110.1117/1.JNP.10.0260302-s2.0-84977101015https://d8.irins.org/handle/IITG2025/21920Plasmonic nanoantenna arrays have been investigated in connection with spectral filtering applications in the last decade. We show that an all-dielectric nanoantenna can also perform a similar function. We propose a nanocross-shaped nanoantenna array design and present a numerical study of spectral filters based on this design. A broad gamut of colors is achievable in both the reflective and transmissive modes and is reasonably robust to fabrication-related imperfections. These all-dielectric ultrathin spectral filters are promising for the realization of multispectral image sensors and low-power displays.falsecolor filter array | image sensor | metasurfaces | nanoantennna | spectral filters | structural color | theory and simulationArticle193426081 April 20166026030arJournal5