Moiré Twisted Lieb Metasurface Enabled for All‐Magic‐Angle DOI
Fangfa Fu, Tianzhi Yang, Li‐Qun Chen

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 27, 2025

Abstract Moiré metasurfaces generate novel optical characteristics, such as photonic polariton and topological Lifshitz transition by stacking multiple with periodic structures. This configuration demonstrates significant flexibility tunability in the manipulation of optical, electrical, acoustic, thermal properties. In this work, a bilayer twisted moiré elastic metasurface is presented, constructed using periodically arranged tilted rhombic prism resonators Lieb lattice configuration. By utilizing twisting mechanism, design enables systematic reconstruction metasurface, which facilitates precise wave propagation, particularly achieving both “all‐magic‐angle” anisotropic transmission. The inherent band structure plays key role reducing energy dissipation during transmission, thereby enhancing concentration. Furthermore, phenomenon unidirectional polariton‐like polarized waveguide mode observed, where propagation biased along specific directions. study establishes comprehensive theoretical framework throughderivation governing equations construction structures corresponding dispersion relations. These findings significantly enhance potential applications manipulation, critical technologies non‐destructive testing harvesting.

Язык: Английский

Multidimensional‐Encrypted Meta‐Optics Storage Empowered by Diffraction‐Order Decoupling DOI Open Access

Zirui Zhao,

Zejing Wang, Yangyang Shi

и другие.

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 9, 2025

Recent advancements in multidimensional multiplexing have paved the way for meta-optics encryption to be a viable solution next-generation information storage and security. However, challenges persist increasing simultaneously modulated dimensions while minimizing structural complexity. Here, novel single-cell order-decoupling method is proposed realization of encrypted system. By analyzing mathematic relationships between phases different diffraction orders, detour phase structure optimized achieve independent encoding freedom multiple orders. The successfully realize concurrent modulation four optical dimensions: i) Wavelength, ii) Wavevector Direction, iii) Polarization, iv) Diffraction Order. system achieves up sixteen-channel meta-holograms with low crosstalk exponentially raises threshold brute-force decoding thus remarkably enhances security storage. It envisioned that on-chip metasurface-based strategy augmented reality display functionalities presents promising applications encryption/storage, anti-counterfeiting, multifunctional photonics integrated circuits.

Язык: Английский

Процитировано

1
Dynamic manipulation of ultrasonic beams by coding Moiré metasurfaces DOI

R. D. Xue,

Xing-Feng Zhu,

Jie Yao

и другие.

Applied Physics Letters, Год журнала: 2025, Номер 126(2)

Опубликована: Янв. 13, 2025

Dynamic acoustic beam manipulation via tunable metasurfaces (AMs) has attracted significant attention. However, most current AMs are primarily designed for airborne sound, feature complex structural components, and serve a singular purpose. This study proposes coding Moiré metasurface (CMM) consisting of two cascaded (ACMs) to dynamically manipulate ultrasonic beams in water. The CMM merges the characteristics can achieve different manipulations by rotating ACM changing sequence. is demonstrated presenting CMMs with stripe checkerboard patterns: former split an into omnidirectional scanning beams, while latter divided it four sections. Finally, bits employed construct samples: water unit bit “0” photosensitive resin “1.” Experimental results demonstrate that beams. proposed hold substantial potential communication dynamic detection applications.

Язык: Английский

Процитировано

0
Reconfigurable Manipulation of Sound with a Multimaterial 3D Printed Origami Metasurface DOI Creative Commons

Dung Le,

Felix Kronowetter, Yan Kei Chiang

и другие.

Advanced Materials Technologies, Год журнала: 2025, Номер unknown

Опубликована: Янв. 22, 2025

Abstract The challenge in reconfigurable manipulation of sound waves using metasurfaces lies achieving precise control over acoustic behavior while developing efficient and practical tuning methods for structural configurations. However, most studies on rely cumbersome time‐consuming systems. These approaches often struggle with fabrication techniques, as conventional face limitations such restricted material choices, challenges complex geometries, difficulties incorporating flexible components. This paper proposes a novel approach metasurface inspired by the Kresling origami, designed programmable at an operating frequency 2000 Hz. origami unit cell is fabricated multimaterial three‐dimensional (3D) printing technology, allowing simultaneous two materials different mechanical properties, thus creating bistable origami‐based structure. Through optimization, equilibrium states achieve reflection phase difference π through application small axial force, F , or torque, T . Various configurations metasurface, generated from combinations these equilibria, enable distinct reflective behaviors switchable functionalities. principle this work simplifies shaping straightforward mechanism, eliminating need systems adjustments.

Язык: Английский

Процитировано

0
Ultrathin moiré pattern interlayered metamaterials for broadband and wide-frequency range tunable microwave absorption DOI
Xilong Li, Jun Li,

Yang Hong

и другие.

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 178695 - 178695

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0
Compact acoustic bilayer metasurfaces for high-efficiency flexible beamsplitting DOI
Jinjie Shi,

Chang-Hui Shen,

Hongchen Chu

и другие.

The Journal of the Acoustical Society of America, Год журнала: 2025, Номер 157(5), С. 3370 - 3377

Опубликована: Май 1, 2025

Tunable beamsplitting is important for the flexible control of sound wave radiation in acoustics, which has garnered an increasing amount attention recently. Twisted bilayer metasurfaces, capable dynamically manipulating acoustic waves by altering interlayer angle, offer significant advantage facile adjustability. Here, we introduce a compact metasurface (ABM) with near-zero distance that enables high-efficiency beamsplitting. The ABM integrates two metasurfaces identical phase distribution, allowing four distinct configurations rotating one 90° increments, thereby achieving function types far-field patterns. periodic design permits to be infinitely large, while its structure assures stability. Both numerical simulations and experimental validations confirm effectiveness ABM. Our work offers versatile solution advanced multifunctional applications.

Язык: Английский

Процитировано

0
Moiré Twisted Lieb Metasurface Enabled for All‐Magic‐Angle DOI
Fangfa Fu, Tianzhi Yang, Li‐Qun Chen

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 27, 2025

Abstract Moiré metasurfaces generate novel optical characteristics, such as photonic polariton and topological Lifshitz transition by stacking multiple with periodic structures. This configuration demonstrates significant flexibility tunability in the manipulation of optical, electrical, acoustic, thermal properties. In this work, a bilayer twisted moiré elastic metasurface is presented, constructed using periodically arranged tilted rhombic prism resonators Lieb lattice configuration. By utilizing twisting mechanism, design enables systematic reconstruction metasurface, which facilitates precise wave propagation, particularly achieving both “all‐magic‐angle” anisotropic transmission. The inherent band structure plays key role reducing energy dissipation during transmission, thereby enhancing concentration. Furthermore, phenomenon unidirectional polariton‐like polarized waveguide mode observed, where propagation biased along specific directions. study establishes comprehensive theoretical framework throughderivation governing equations construction structures corresponding dispersion relations. These findings significantly enhance potential applications manipulation, critical technologies non‐destructive testing harvesting.

Язык: Английский

Процитировано

0