Fig. 4
From: Broadening Bandwidths of Few-Layer Absorbers by Superimposing Two High-Loss Resonators
a Photograph of the metasurface on a glass substrate. b Experimental absorption/transmission/reflection spectra of a metasurface structure. c Photograph of a flexible metasurface on a PE substrate. d Experimental absorption/transmission/reflection spectra of a flexible metasurface. e Experimental angle-dependent absorption spectra of a metasurface absorber under an unpolarized light. f Experimental averaged absorption at wavelengths ranging from 350 to 1000 nm at various incident angles from 0° to 70°of a unpolarized light