Results 151 to 160 of about 4,317 (190)
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Transmission optimized LWIR metalens
Applied Optics, 2022Thermal imaging at the infrared wavelength regime has long been applied to different areas such as agriculture and defense industries. Metasurfaces, 2D engineered ultra-thin structures, have attracted much attention due to their compact size, superior performance, and different functionalities at optical frequencies.
Halil Can Nalbant +4 more
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Ultraviolet metalens and metalens array of focused vortex beams
Chinese Physics B, 2023The solar-blind ultraviolet (UV) wavelength is particularly interesting within the range of 200 nm–300 nm. Here, we propose a focusing metalens, focusing vortex beam (VB) metalens and metalens array that specifically work in the UV band to focus a beam or VB.
Jinping Zhang +7 more
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High-Resolution Metalens Imaging Polarimetry
Nano Letters, 2023Imaging polarimeters find many critical applications in applications ranging from remote sensing to biological detection. Metasurfaces have been proposed as a compact approach for imaging polarimeters, but prior strategies suffer from low imaging resolution. Here, we propose an interleaved metalens configuration for polarization imaging where three-row
Yongzhi Cheng, Jian Wang, Zhang-Kai Zhou
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Optik, 2021
Abstract Recently, metasurfaces are widely applied in different fields and emerge as a versatile platform for wavefront shaping. For further application, tunable metasurface devices are highly desired. Here, a deflectable focusing metalens based on Moire structure is proposed.
Tian Zhou, Bin Hu, Zheng Liu, Juan Liu
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Abstract Recently, metasurfaces are widely applied in different fields and emerge as a versatile platform for wavefront shaping. For further application, tunable metasurface devices are highly desired. Here, a deflectable focusing metalens based on Moire structure is proposed.
Tian Zhou, Bin Hu, Zheng Liu, Juan Liu
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A Reconfigurable Active Huygens' Metalens
Advanced Materials, 2017 Metasurfaces enable a new paradigm to control electromagnetic waves by manipulating subwavelength artificial structures within just a fraction of wavelength. Despite the rapid growth, simultaneously achieving low‐dimensionality, high transmission efficiency, real‐time continuous reconfigurability, and a wide variety of reprogrammable functions is still
Ke Chen +2 more
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Rotationally tunable varifocal 3D metalens
Optics Letters, 2021Varifocal optics have a variety of applications in imaging systems. Metasurfaces offer control of the phase, transmission, and polarization of light using subwavelength engineered structures. However, conventional metasurface designs lack dynamic wavefront shaping which limits their application.
Fatih Balli +2 more
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High numerical aperture microwave metalens
Optics Letters, 2020The numerical aperture (NA) of a lens determines its focusing resolution capability and the maximum light collection or emission angle. In this Letter, an ultrathin high NA metalens operating in the microwave band is designed and demonstrated both numerically and experimentally.
Yong-Qiang Liu +5 more
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Metalens based on constructive interference
Applied Optics, 2019A metalens consisting of nanometer rectangular holes etched on silver film is proposed, and the focusing effect is actualized in the visible region. The rectangular holes are arranged on concentric circles, and the fields excited by these holes constructively interfere due to having the same propagation phase.
Lixia Liu +5 more
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Metalen en medische hulpmiddelen:What's new?
Nederlands tijdschrift voor dermatologie en venereologie, 2010Palladium, gold and titanium are metals which are increasingly being used for prostheses, pacemakers and dental elements. We therefore expect to see more allergic reactions elicited by these metals in the future, manifesting for instance as eczema, pain or stomatitis.
Van Dalen, E. +2 more
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Metalens Topology Optimization
Inquiry@Queen's Undergraduate Research Conference ProceedingsPhotonic metasurfaces are thin optical elements comprised of structures arranged strategically upon a surface to manipulate electromagnetic waves. To produce metasurfaces at a large scale, it is beneficial to obtain not just an optimal design, but also an understanding of which areas of the metasurface are most influential on the overall performance of
Kate Iacobucci +2 more
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