Hybrid metasurfaces for simultaneous focusing and filtering

Sultan, Mansoor A.; Balli, Fatih; Lau, Daniel L.; Hastings, J. T.

doi:10.1364/ol.410080

Cited by 8 publications

(3 citation statements)

References 27 publications

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“…As illustrated in Figure b, our CFML comprises a 3D printed microlens with nanopillars on its surface. A similar design incorporating nanopillars with a Fresnel lens structure was recently reported, but differences in design and printing strategies allow us to expand the wavelengths and focal lengths from discrete values to a broad range, while improving throughput of the fabrication.…”

Section: Resultsmentioning

confidence: 99%

Optical Fireworks Based on Multifocal Three-Dimensional Color Prints

Wang

Ruan

et al. 2021

ACS Nano

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Colorful three-dimensional (3D) prints are promising as practical anticounterfeiting labels with easily recognizable and striking visual effects. However, existing colorful 3D displays either require specific illumination conditions with multiple coherent lasers, hence suffer from speckles, or are unsuitable as passive labels. Here, we report a concept of a virtual 3D color object consisting of colorful focal spots in free space. The colors and corresponding “floating heights” of these spots are independently controlled via the design of 3D printed microlens profiles and heights of nanopillars that act as structural-color filters. Despite the unremarkable appearance of the printed substrate under both optical and electron microscopy, illumination with incoherent white light reveals information in the form of bright colorful spots appearing at designated heights above the plane of the substrate. The term “optical fireworks” refers to the way these spots appear and disappear under an optical microscope as one continuously shifts the focal plane. Our 3D printed optical fireworks security labels introduce applications for optical elements integrated with nanostructures in 3D colorful displays and anticounterfeiting labels.

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Section: Resultsmentioning

confidence: 99%

Optical Fireworks Based on Multifocal Three-Dimensional Color Prints

Wang

Ruan

et al. 2021

ACS Nano

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“…However, this results in a high aspect ratio for meta-atoms, [218] necessitating precise fabrication techniques. Presently, various processes are employed for metalens preparation including plasma-enhanced chemical vapor deposition, [218,219] nano-imprinting, [220] nanometer lithography, [60] electron beam lithography, [220][221][222] extreme ultraviolet carved, two-photon direct writing system, [223][224][225] and nano solid-state laser printing. [98] While these methods can generate nano-level meta-atoms, certain distortions may occur during fabrication, for example, cuboid may become chamfered cuboid or even cylindrical shapes.…”

Section: Process Accuracymentioning

confidence: 99%

Metalens in Improving Imaging Quality: Advancements, Challenges, and Prospects for Future Display

Peng,

Zhang,

Zhou

et al. 2024

Laser & Photonics Reviews

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Metalens, a metasurface with a focusing phase, has been the focus of research due to its immense potential for use in imaging and display technology. Traditional lens and optical imaging systems rely on phase accumulation, however metalens with subwavelength structures provide a disruptive path for miniaturized optical imaging systems by allowing unfettered modulation of incident light's phase and amplitude. Recently, extensive efforts have been devoted to exploring new design strategies, new functionalities, and possible applications. This paper reviews the development, principle, classification, and research status of metalens. In particular, this review focuses on the progress and challenges of improving imaging quality and expanding imaging diversity, including improvements of resolution, enhancement of depth of field, extension of field of view, and achromatism. Lastly, the prospects of metalens in the future display are summarized, and the application potentials of metalens in novel 3D display, intelligent and bionic display, as well as nano‐pixelate light‐emitting display (NLED) are emphasized.

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“…Combining plasmonic MSs with different materials to create hybrid versions creates new research opportunities and creative uses. The promise of both pure metallic and all-dielectric characteristics is concurrently exploited by efficient hybrid plasmonic-photonic MSs, which is highlighted as an emerging technology in flat optics [ 142 , 143 ]. Due to their ability to combine the strongest field enhancement of plasmonic metals with numerous low-loss radiation channels of dielectric resonators, hybrid metal-dielectric nanostructures have become increasingly popular [ 37 , 76 , 144 , 145 , 146 , 147 , 148 ].…”

Section: Types Of Ms-based Sensorsmentioning

confidence: 99%

Recent Development in Metasurfaces: A Focus on Sensing Applications

2022

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One of the fastest-expanding study areas in optics over the past decade has been metasurfaces (MSs). These subwavelength meta-atom-based ultrathin arrays have been developed for a broad range of functions, including lenses, polarization control, holography, coloring, spectroscopy, sensors, and many more. They allow exact control of the many properties of electromagnetic waves. The performance of MSs has dramatically improved because of recent developments in nanofabrication methods, and this concept has developed to the point that it may be used in commercial applications. In this review, a vital topic of sensing has been considered and an up-to-date study has been carried out. Three different kinds of MS absorber sensor formations, all-dielectric, all-metallic, and hybrid configurations, are presented for biochemical sensing applications. We believe that this review paper will provide current knowledge on state-of-the-art sensing devices based on MSs.

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Hybrid metasurfaces for simultaneous focusing and filtering

Cited by 8 publications

References 27 publications

Optical Fireworks Based on Multifocal Three-Dimensional Color Prints

Optical Fireworks Based on Multifocal Three-Dimensional Color Prints

Metalens in Improving Imaging Quality: Advancements, Challenges, and Prospects for Future Display

Recent Development in Metasurfaces: A Focus on Sensing Applications

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