Results 61 to 70 of about 65,305 (312)

A review of light‐controlled programmable metasurfaces for remote microwave control and hybrid signal processing

Engineering Reports, 2023
Programmable metamaterials and metasurfaces have gained great interest due to real‐time electromagnetic control and digital information processing capabilities. Different from traditional electrically‐controlled programmable metasurfaces, recently, light‐
Xin Ge Zhang, Ya Lun Sun, Zhixiang Huang, Wei Xiang Jiang   +3 more
doaj   +1 more source

Plane-wave scattering by self-complementary metasurfaces in terms of electromagnetic duality and Babinet's principle [PDF]

Phys. Rev. B 88, 205138 (2013), 2013
We investigate theoretically electromagnetic plane-wave scattering by self-complementary metasurfaces. By using Babinet's principle extended to metasurfaces with resistive elements, we show that the frequency-independent transmission and reflection are realized for normal incidence of a circularly polarized plane wave onto a self-complementary ...
arxiv   +1 more source

Hunting for Monolayer Black Phosphorus with Photoluminescence Microscopy

Photonics
Monolayer black phosphorus (BP) holds great promise for naturally hyperbolic polaritons and correlated states in rectangular moiré superlattices. However, preparing and identifying high-quality monolayer BP are challenging due to its instability and high
Chenghao Pan, Yixuan Ma, Quan Wan, Boyang Yu, Shenyang Huang, Hugen Yan   +5 more
doaj   +1 more source

Roadmap for Optical Metasurfaces

ACS Photonics
Metasurfaces have recently risen to prominence in optical research, providing unique functionalities that can be used for imaging, beam forming, holography, polarimetry, and many more, while keeping device dimensions small.
A. Kuznetsov, M. Brongersma, Jin Yao, M. Chen, Uriel Levy, Din Ping Tsai, N. Zheludev, A. Faraon, A. Arbabi, Nanfang Yu, Debashis Chanda, Kenneth B. Crozier, A. Kildishev, Hao Wang, Joel K W Yang, Jason G. Valentine, P. Genevet, Jonathan A. Fan, Owen D. Miller, Arka Majumdar, Johannes E. Fröch, David Brady, Felix Heide, Ashok Veeraraghavan, N. Engheta, A. Alù, A. Polman, H. A. Atwater, Prachi Thureja, R. Paniagua‐Domínguez, S. Ha, A. I. Barreda, Jon A. Schuller, I. Staude, G. Grinblat, Yuri S. Kivshar, Samuel Peana, S. Yelin, Alexander Senichev, V. Shalaev, S. Saha, A. Boltasseva, J. Rho, D. Oh, Joo-Suc Kim, Junghyun Park, Robert Devlin, R. Pala   +47 more
semanticscholar   +1 more source

Metasurface polarization splitter [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2017
Polarization beam splitters, devices that separate the two orthogonal polarizations of light into different propagation directions, are among the most ubiquitous optical elements. However, traditionally polarization splitters rely on bulky optical materials, while emerging optoelectronic and photonic circuits require compact, chip-scale polarization ...
Brian A. Slovick, You Zhou, Zhi Gang Yu, Ivan I. Kravchenko, Dayrl P. Briggs, Parikshit Moitra, Srini Krishnamurthy, Jason Valentine   +7 more
openaire   +6 more sources

Molding of Reflection and Scattering from Uniform Walls Using Space-Periodic Metasurfaces [PDF]

arXiv, 2023
Active development is taking place in reconfigurable and static metasurfaces that control and optimize reflections. However, existing designs typically only optimize reflections from the metasurface panels, neglecting interference with reflections originating from supporting walls and nearby objects in realistic scenarios.
arxiv  

Ultraspectral Imaging Based on Metasurfaces with Freeform Shaped Meta‐Atoms

Laser & Photonics Reviews, 2022
Metasurfaces have an exceptional capacity to manipulate the phase, amplitude, polarization, or spectrum of light. However, unit cells, or meta‐atoms, of metasurfaces are conventionally designed using regular shapes, limiting performance improvement.
Jiawei Yang, K. Cui, Xusheng Cai, Jianning Xiong, Hongbo Zhu, Shijie Rao, Sheng Xu, Yidong Huang, Fang Liu, Xue Feng, Wei Zhang   +10 more
semanticscholar   +1 more source

Singular graphene metasurfaces [PDF]

EPJ Applied Metamaterials, 2019
The spatial tunability of the electron density in graphene enables the dynamic engineering of metasurfaces in the form of conductivity gratings, which can bridge the momentum gap between incident radiation and surface plasmons. Here, we discuss singular graphene metasurfaces, whose conductivity is strongly suppressed at the grating valleys.
Emanuele Galiffi, John Pendry, Paloma Arroyo Huidobro   +2 more
openaire   +4 more sources

A Surrogate-Assisted Extended Generative Adversarial Network for Parameter Optimization in Free-Form Metasurface Design [PDF]

arXiv, 2023
Metasurfaces have widespread applications in fifth-generation (5G) microwave communication. Among the metasurface family, free-form metasurfaces excel in achieving intricate spectral responses compared to regular-shape counterparts. However, conventional numerical methods for free-form metasurfaces are time-consuming and demand specialized expertise ...
arxiv  

Asymmetric Metasurfaces with High-Q Resonances Governed by Bound States in the Continuum. [PDF]

Physical Review Letters, 2018
We reveal that metasurfaces created by seemingly different lattices of (dielectric or metallic) meta-atoms with broken in-plane symmetry can support sharp high-Q resonances arising from a distortion of symmetry-protected bound states in the continuum. We
K. Koshelev, S. Lepeshov, Mingkai Liu, A. Bogdanov, Y. Kivshar   +4 more
semanticscholar   +1 more source