Reconfigurable Metasurface for Dynamical Modulation of Reflection, Transmission, and Absorption

Song, Xinyun; Zhu, Weiren

doi:10.1109/aps/ursi47566.2021.9704496

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…Metasurfaces have attracted much attention owing to their unique ability to control amplitude, phase, and polarization of electromagnetic waves over a subwavelength scale. − In particular, the controllable full range phase jumps at the interfaces of metasurfaces occur at subwavelength distances, which are much smaller than the length scales of wave changes achievable with bulk metamaterials. , By appropriately controlling the propagation characteristics of waves, metasurfaces enable various applications in microwave, , acoustic, − terahertz, , and optical regimes. , …”

Section: Introductionmentioning

confidence: 99%

High-Efficiency Geometric Phase Metasurface with Multifold Rotationally Symmetric Resonators

Faraz

Zhang

et al. 2022

ACS Appl. Opt. Mater.

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Metasurfaces based on the geometric phase principle have captured enormous interest owing to their ability to manipulate electromagnetic waves. Here we demonstrate for the first time a high-efficiency, high-order geometric phase with a 3-fold rotationally symmetric structure, which is different from traditional geometric phase structures whose phase shift is twice the rotation angle. Highly efficient full phase control of a circularly polarized incident wave was achieved through the rotation of the unit cells, with the phase shift being six times the rotation angle. The co-polarized reflection efficiency was shown to exceed 85% for frequencies from 11.3 to 11.8 GHz, with a peak value of 92.8% at 11.52 GHz. The designed metasurface was fabricated and experimentally tested by the generation of holographic images.

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Section: Introductionmentioning

confidence: 99%

High-Efficiency Geometric Phase Metasurface with Multifold Rotationally Symmetric Resonators

Faraz

Zhang

et al. 2022

ACS Appl. Opt. Mater.

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“…Methods for reflection magnitude control are discussed next. First, a transmit-reflect hybrid concept described in [19] could be implemented as a reflector with dynamic amplitude control by adjusting the ratio of power transmitted vs. reflected. An alternative approach is to control the polarization rotation of the scattered radiation [20] through the use of PIN-diodes, which effectively attenuates the received power by an antenna of fixed polarization.…”

Section: Resonator-based Approach To Metasurface Designmentioning

confidence: 99%

Design and Demonstration of Shapeshifting Electromagnetic Reflector with Decoupled Phase and Magnitude Control.

Macdonell

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Independent Manipulation of Aperture and Radiation Fields in a Transmission‐Reflection Integrated Complex‐Amplitude Metasurface

Zhang

Liu

et al. 2023

Adv Materials Technologies

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Metasurfaces have superior performance in flexible wave manipulation used for various multifunctional devices. However, they remain challenging for the completely spatial manipulation of electromagnetic waves including wave propagation direction and distance degrees of freedom. Here, a novel strategy of multiplexing metasurface with a non‐interleaved meta‐atoms array is introduced. The design fully explores wave propagation direction and distance degrees of freedom by combining irregular complex‐amplitude encoding method and transmission‐reflection selective meta‐atom. Therein, by limiting effective meta‐atoms to a specific geometry and encoding highly selective phase sequences for wavefront shaping to these meta‐atoms, the distance multiplexing properties of aperture and radiation fields can be designed to suit application needs. Also, the transmission‐reflection integrated meta‐atoms is further engineered to increase the propagation direction degrees of freedom in electromagnetic manipulation. As proof of concept, a six‐channel metasurface operating in one transmitted mode and two reflected modes are experimentally generated, enabling us to reconstruct an aperture‐field printing image and a radiation‐field holographic image for each mode simultaneously. This strategy may have an alternative route for potential applications such as data storage, image encryption, and information communication systems.

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Reconfigurable Metasurface for Dynamical Modulation of Reflection, Transmission, and Absorption

Cited by 3 publications

References 15 publications

High-Efficiency Geometric Phase Metasurface with Multifold Rotationally Symmetric Resonators

High-Efficiency Geometric Phase Metasurface with Multifold Rotationally Symmetric Resonators

Design and Demonstration of Shapeshifting Electromagnetic Reflector with Decoupled Phase and Magnitude Control.

Independent Manipulation of Aperture and Radiation Fields in a Transmission‐Reflection Integrated Complex‐Amplitude Metasurface

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