Angular- and polarization-independent structural colors based on 1D photonic crystals

Lee, Kyu‐Tae; Ji, Chengang; Banerjee, Debasish; Guo, L. Jay

doi:10.1002/lpor.201500029

Cited by 58 publications

(32 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the following section, we will discuss recent advances in high-resolution color printing by metasurfaces, and several kinds of representative metasurfaces that have excellent quality or special functionalities are presented. To keep the present section compact, we are mainly focused on 2D high-resolution color printing, hence disregarding some work on 1D grating colors [256,257] and multilayer systems [216,258,259].…”

Section: High-resolution Color Printingmentioning

confidence: 99%

Gradient metasurfaces: a review of fundamentals and applications

2017

View full text Add to dashboard Cite

In the wake of intense research on metamaterials the two-dimensional analogue, known as metasurfaces, has attracted progressively increasing attention in recent years due to the ease of fabrication and smaller insertion losses, while enabling an unprecedented control over spatial distributions of transmitted and reflected optical fields. Metasurfaces represent optically thin planar arrays of resonant subwavelength elements that can be arranged in a strictly or quasi periodic fashion, or even in an aperiodic manner, depending on targeted optical wavefronts to be molded with their help. This paper reviews a broad subclass of metasurfaces, viz. gradient metasurfaces, which are devised to exhibit spatially varying optical responses resulting in spatially varying amplitudes, phases and polarizations of scattered fields. Starting with introducing the concept of gradient metasurfaces, we present classification of different metasurfaces from the viewpoint of their responses, differentiating electricaldipole, geometric, reflective and Huygens' metasurfaces. The fundamental building blocks essential for the realization of metasurfaces are then discussed in order to elucidate the underlying physics of various physical realizations of both plasmonic and purely dielectric metasurfaces. We then overview the main applications of gradient metasurfaces, including waveplates, flat lenses, spiral phase plates, broadband absorbers, color printing, holograms, polarimeters and surface wave couplers. The review is terminated with a short section on recently developed nonlinear metasurfaces, followed by the outlook presenting our view on possible future developments and perspectives for future applications.

show abstract

Section: High-resolution Color Printingmentioning

confidence: 99%

Gradient metasurfaces: a review of fundamentals and applications

2017

View full text Add to dashboard Cite

show abstract

“…The thicknesses of additional silica and titania layers are 55 and 31 nm, respectively, which correspond to an optical length of one‐eighth of the reflectance peak wavelength. These additional layers suppress the second‐order peak in the reflectance thereby enhancing color purity . In the same manner to red‐colored microspheres, green‐ and blue‐colored microspheres are prepared by setting d silica = 87 nm and d titania = 50 nm for green, and d silica = 75 nm and d titania = 42 nm for blue, as shown in Figure b,c, where additional layers are also inserted.…”

mentioning

confidence: 99%

Magnetoresponsive Photonic Microspheres with Structural Color Gradient

et al. 2017

View full text Add to dashboard Cite

Photonic Janus particles are created by alternately sputtering silica and titania on microspheres in order to obtain a structural color gradient. In addition, the microspheres are rendered magnetoresponsive. The Janus microspheres with optical and magnetic anisotropy enable on-demand control over orientation and structural color through manipulation of an external magnetic field, thereby being useful as active color pigments for reflection-mode displays.

show abstract

“…For displays, imaging, and color printing applications, it is important to achieve angle‐insensitive colors, which cannot be achieved with ordinary F–P cavities where the resonance shifts toward a shorter wavelength region with increasing angles of incidence. In order to mitigate the dependence of optical properties on the incident angle, reduced refraction into the structure by using materials with high refractive index, strong interference effects in highly absorbing media‐based nanocavities, phase compensation, and localized resonances in metallic nanostructures have been studied . Here we use a reflective color design to illustrate the principle .…”

Section: Structural Color Filtersmentioning

confidence: 99%

Engineering Light at the Nanoscale: Structural Color Filters and Broadband Perfect Absorbers

Lee

et al. 2017

Advanced Optical Materials

Self Cite

168

121

View full text Add to dashboard Cite

Recent advances in fabrication and processing methods have spurred many breakthroughs in the field of nanostructures that provide novel ways of manipulating light interaction on a well controllable manner, thereby enabling a wide variety of innovative applications. Structural colors have shown great promise as an alternative for existing colorant‐based filters due to their noticeable advantages, which open up diverse potential applications such as energy‐efficient displays, ultrahigh‐resolution imaging, ultrahigh‐sensitivity biosensors, and building‐integrated photovoltaics. Broadband perfect absorbers, which exploit extraordinary optical phenomena at subwavelength scale, have also received increasing attention due to their capability of improving efficiency and performance characteristics of various applications including thermoelectrics, invisibility, solar‐thermal‐energy harvesting, and imaging. This review highlights some recent progress in these two related fields. The structural colors based on optical resonances in thin‐film structures, guided‐mode resonances in slab waveguide gratings, and surface plasmon resonances in plasmonic nanoresonators are described. Representative achievements associated with the broadband perfect absorbers, which include schemes employing highly absorbing media, multi‐cavity resonances, and broadband impedance matching are investigated.

show abstract

Angular- and polarization-independent structural colors based on 1D photonic crystals

Cited by 58 publications

References 37 publications

Gradient metasurfaces: a review of fundamentals and applications

Gradient metasurfaces: a review of fundamentals and applications

Magnetoresponsive Photonic Microspheres with Structural Color Gradient

Engineering Light at the Nanoscale: Structural Color Filters and Broadband Perfect Absorbers

Contact Info

Product

Resources

About