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Article
Optics
Ding Zhang et al.
Summary: In this work, the authors propose an ultra-wideband flexible radar absorber with low infrared emissivity for a radar-infrared bi-stealth application using multilayer patterned graphene. The absorber consists of three layers of graphene films with different patterns, flexible substrates, lightweight foam, and a ground layer. The flexible graphene films act as omnidirectional resistors to achieve dual polarization and flexibility. An infrared shielding layer (IRSL) made of patterned indium tin oxide (ITO) separated by a thin foam layer is placed on top of the absorber to effectively reduce the infrared emissivity while maintaining radar absorption properties. The experimental results validate the performance of the designed absorber.
Article
Engineering, Electrical & Electronic
Subhan Zakir et al.
Summary: Graphene-based metamaterials are used to develop a broadband absorber for terahertz radiation. The proposed absorber, a graphene meta-square ring with multiple plasmonic resonances, achieves over 95% absorption for normally incident waves and maintains over 80% absorption for obliquely incident waves. It is also polarization-insensitive and its absorption characteristics can be adjusted by changing the chemical potential of graphene. This proposed absorber has the largest reported bandwidth for a single layer absorber with a small footprint, making it suitable for various applications in the terahertz range.
IEEE PHOTONICS JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Yifan Yang et al.
Summary: This paper proposes a three-dimensional lightweight metamaterial that achieves ultra-wideband microwave absorption. By introducing resistive films into the standing frame, electric resonances are induced in the gap between adjacent sub-wavelength unit cells, resulting in ultra-wideband absorption for electromagnetic waves. The experimental results match the simulated results, and the proposed metamaterial is lightweight and easy to fabricate.
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
(2022)
Article
Optics
Yaojia Yang et al.
Summary: In this work, a flexible frequency-selective absorber (FSR) with great angular stability and conformal superiority is demonstrated using a metal-graphene hybrid metamaterial. The FSR does not require any lumped components and exhibits excellent angular stability and flexibility, making it ideal for stealth systems.
Article
Optics
Dexian Yan et al.
Summary: This paper proposes a graphene-assisted wideband metamaterial microwave absorber with polarization insensitivity and wide incidence angle, achieving good absorption over an ultra-wideband. Investigations on the influences of geometry structure parameters and graphene chemical potential on absorption characteristics reveal polarization independent and wide incidence angle properties of the structure. The novel microwave absorber demonstrates great potential in various fields like electromagnetic stealth, electromagnetic interference shielding, and 5G systems.
Article
Engineering, Electrical & Electronic
Ting Shi et al.
Summary: This article introduces a low-profile and ultrawideband capacitive circuit absorber with enlarged unit periodicity, which uses impedance sheet model for RC synthesis and grating lobes suppression. The absorber achieves a wide absorption bandwidth with convenient implementation.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Yu-Tong Zhao et al.
Summary: This article introduces a via-based hybrid metal-graphene metamaterial absorber with miniaturized periodicity, broad absorption band, and large-angle radar cross section (RCS) reduction. The absorber's unit cell consists of a cross-shaped graphene film, four metal arrow-shaped patterns, and four cylindrical vias. By extending the length of the vias and folding the pattern shape, the absorber's unit size is greatly reduced while maintaining absorption performance. The adopted hybrid metal-graphene structure reduces complexity and fabrication cost.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Review
Physics, Multidisciplinary
Yadgar I. Abdulkarim et al.
Summary: Metamaterials are artificially designed materials that possess unique properties due to their geometrical design, such as negative refractive index and left-handed behavior. Metamaterial absorbers, made up of metallic patterns and dielectric layers, achieve high electromagnetic wave absorption through various mechanisms.
FRONTIERS IN PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Liansheng Wang et al.
Summary: The tunable ultra-wideband metamaterial absorber based on graphene presented in this study shows absorption exceeding 90% from 1.57 to 8.46 GHz, with tunability achieved by changing the bias voltage on the graphene. The absorber is insensitive to the polarization state of the incident wave but sensitive to its angle of incidence.
JOURNAL OF COMPUTATIONAL ELECTRONICS
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Pingping Min et al.
Summary: The optically transparent three-dimensional microwave metamaterial absorber based on compact standing-up rounded lattice array features ultra-wideband, wide-angle absorption, and polarization-independent properties, achieving efficient microwave absorption in a wide frequency range.
2021 FIFTEENTH INTERNATIONAL CONGRESS ON ARTIFICIAL MATERIALS FOR NOVEL WAVE PHENOMENA (METAMATERIALS)
(2021)
Article
Engineering, Electrical & Electronic
Xhoandri Lleshi et al.
Summary: This study presents a fully 3D-printed wideband metamaterial absorber with an absorptivity above 0.95 in the X and Ku-bands and a fractional bandwidth of 0.71. By vertically stacking multiple resonant cavities, a hyperbolic metamaterial with a pyramidal shape is designed to achieve wideband absorption. Lossy filaments and tailored cavity dimensions are used to increase dissipative losses and absorb equidistant frequencies for unitary and flat absorption.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Xiaofan Zhang et al.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2020)
Review
Chemistry, Multidisciplinary
Qiang Song et al.
ADVANCED FUNCTIONAL MATERIALS
(2020)
Article
Engineering, Electrical & Electronic
Jun Yu et al.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2020)
Article
Engineering, Electrical & Electronic
Delme Winson et al.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2019)
Article
Multidisciplinary Sciences
Hailong Huang et al.
SCIENTIFIC REPORTS
(2018)
Article
Nanoscience & Nanotechnology
Chang Liu et al.
Article
Engineering, Electrical & Electronic
Da Yi et al.
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2017)
Article
Physics, Applied
Yang Shen et al.
JOURNAL OF APPLIED PHYSICS
(2015)
Article
Engineering, Electrical & Electronic
Hui-Bin Zhang et al.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2013)
Article
Optics
LiangKui Sun et al.
Article
Engineering, Electrical & Electronic
Filippo Costa et al.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2010)
