Perception of color with our eyes is one of the major sources of information that we gain from our surround-ings.The color of an object depends on which portion of light(range of wavelengths)reaches our eyes.In nature...Perception of color with our eyes is one of the major sources of information that we gain from our surround-ings.The color of an object depends on which portion of light(range of wavelengths)reaches our eyes.In nature,struc-tura1 colors are often caused by the interaction of light with dielectric structures whose dim ensions are on the order of visible-light wavelengths.For example,in beetles,the color is originated from the microstructure of the skin which is acting as scattering center;while in some butterflies,the colorful patterns are routed from the reflection from the top of the wings.Different optical interactions,including multilayer interference,light scattering and photonic crystal eflfect,give rise to selective transmission or reflection of particular light wavelengths.which leads to the generation of structural colors.W ith the consumption of dyes and pigments,recycling of colored discarded m aterials has been a very difficult issue because of the hardships in relation to the dissociation of diverse chemica1 compounds present in the colorant agents.Plasmonic colors therefore draw attention as they enable generation of vivid colors only by geometrical arrange-ment of m etals which not only eases the recycling but also enhances the chemical stability of the colors.Plasm onic colors are structural colors that originate from the interaction between light and metallic nanostructures.Rapid development in nanofabrication and characterization of plasmonic structures provides an efficient way to control light properties at subwavelength scale,which can generate plasmonic structural colors.The engineering of plasmonic colors is a promising rapidly em erging research field that could have a large technological impact.Artiflcia1 surfaces,in particular,on which the colors are generated via a resonant interaction between light and subwavelength metallic nanostructures,have emerged as nanomaterials or metam aterials for the realization of structura1 colors.Here we introduce several representa-tive plasmonic nanostructures which can generate visible structural colors,including nanogratings,perforated metallic film s,metal-insulator-meta1 resonators,dynamically tunable color generators and perfect absorbers.w e highlight the properties of plasmonic colors and discuss the intrinsic plasmonic resonance m echanism s.Plasmonic structural colors have features of sub-diffraction localization,high-fidelity color rendering and rapid responses of external changes,which are believed to offer a promising future in the applications including ultra-high resolution color displaB spectral filtering and sensing,holography,three-dimensiona1 stereoscopic imaging and real-time colors controlling with extremely com-pact device architectures.展开更多
文摘Perception of color with our eyes is one of the major sources of information that we gain from our surround-ings.The color of an object depends on which portion of light(range of wavelengths)reaches our eyes.In nature,struc-tura1 colors are often caused by the interaction of light with dielectric structures whose dim ensions are on the order of visible-light wavelengths.For example,in beetles,the color is originated from the microstructure of the skin which is acting as scattering center;while in some butterflies,the colorful patterns are routed from the reflection from the top of the wings.Different optical interactions,including multilayer interference,light scattering and photonic crystal eflfect,give rise to selective transmission or reflection of particular light wavelengths.which leads to the generation of structural colors.W ith the consumption of dyes and pigments,recycling of colored discarded m aterials has been a very difficult issue because of the hardships in relation to the dissociation of diverse chemica1 compounds present in the colorant agents.Plasmonic colors therefore draw attention as they enable generation of vivid colors only by geometrical arrange-ment of m etals which not only eases the recycling but also enhances the chemical stability of the colors.Plasm onic colors are structural colors that originate from the interaction between light and metallic nanostructures.Rapid development in nanofabrication and characterization of plasmonic structures provides an efficient way to control light properties at subwavelength scale,which can generate plasmonic structural colors.The engineering of plasmonic colors is a promising rapidly em erging research field that could have a large technological impact.Artiflcia1 surfaces,in particular,on which the colors are generated via a resonant interaction between light and subwavelength metallic nanostructures,have emerged as nanomaterials or metam aterials for the realization of structura1 colors.Here we introduce several representa-tive plasmonic nanostructures which can generate visible structural colors,including nanogratings,perforated metallic film s,metal-insulator-meta1 resonators,dynamically tunable color generators and perfect absorbers.w e highlight the properties of plasmonic colors and discuss the intrinsic plasmonic resonance m echanism s.Plasmonic structural colors have features of sub-diffraction localization,high-fidelity color rendering and rapid responses of external changes,which are believed to offer a promising future in the applications including ultra-high resolution color displaB spectral filtering and sensing,holography,three-dimensiona1 stereoscopic imaging and real-time colors controlling with extremely com-pact device architectures.
