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Diffraction intensity of the zero and first order from three monochromatic lights (405, 532, and 635 nm) on four patterned ink gratings. (a) Black, (b) red, (c) blue, and (d) brown ink gratings. Black ink gratings at different thicknesses in (e) transmission, (f) diffraction modes. Spin-coating effect (g) Thickness, (h) Light absorption.
