Seo, Minseok Kim, Jaeyong Oh, Harim Kim, Man Baek, In Uk Choi, Kwang-Deok Byun, Ji Young Lee, Myeongkyu 2024-01-19T19:34:06Z 2024-01-19T19:34:06Z 2021-09-02 2019-07 2195-1071 https://pubs.kist.re.kr/handle/201004/119821 The aesthetic functions of metals have attracted increasing attention, and their colorization is of scientific and technological significance. This study demonstrates that vivid structural colors can be produced on stainless steel and Al, which are two of the most commonly used metals. It is well known that a transparent dielectric film coated onto a substrate exhibits a rippled spectrum consisting of alternating reflectance minima and maxima due to multibeam interference, making it appear colored. However, such a film does not produce strong colors on a highly reflective metallic substrate, because the resulting interference ripple has small amplitudes. Herein, very vivid colors are generated by coating a thin metal layer over a dielectric film, where the metal layer adjusts the amount of light incident into the dielectric and strengthens the interference effect. The hue and saturation of the produced colors are controllable by changing the thicknesses of the dielectric and metallic layers. Additionally, color images are printed by locally controlling the layer thicknesses. This method has potential for various applications ranging from surface decoration and visual arts to optical filters and perfect absorbers. English WILEY-V C H VERLAG GMBH PHOTONIC CRYSTAL FILMS LARGE-AREA Printing of Highly Vivid Structural Colors on Metal Substrates with a Metal-Dielectric Double Layer Article 10.1002/adom.201900196 1 ADVANCED OPTICAL MATERIALS, v.7, no.13 ADVANCED OPTICAL MATERIALS 7 13 scie scopus 000474809500011 2-s2.0-85065421793 Materials Science, Multidisciplinary Optics Materials Science Optics Article PHOTONIC CRYSTAL FILMS LARGE-AREA color printing metal substrate resonant cavity structural colors