Twodimensional subwavelength metananopillar array for efficient visible

Wereporttheextraordinarylightharvestingpropertyofametamaterial-basedsubwavelengthnanopillararraywithaperiodicarrangement.Itisfoundthatthemeta-nanopillararraycanabsorblightefficientlywithanaverageabsorptivityof0.96overthewholevisiblewavebandwithindependentoftheincominglightpolarizationsta