Article
Optics
Xuemei Du, Fengping Yan, Wei Wang, Luna Zhang, Zhuoya Bai, Hong Zhou, Yafei Hou
Summary: Graphene plasmons have attracted significant interest for constructing high-performance functional metamaterial devices, specifically narrowband metamaterial absorbers. In this study, a graphene-dielectric-metal hybrid structure was proposed for dual-band excellent absorption and refractive index sensing. The designed structure exhibited a high Q factor and sensitivity, with the ability to switch between different absorption bands based on incident angle. The proposed device also demonstrated good thermal stability, polarization insensitivity, and fabrication tolerance, showcasing potential for various applications in plasmon-based devices.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Qilin Ma, Weiyi Hong, Lingling Shui
Summary: An ultra-broadband terahertz absorber was proposed and validated by combining surface plasmon resonance and intrinsic mode absorption, using a patterned graphene in a TOPAS polymer. The optimum absorption bandwidth was achieved through the coupling of different arrangements of graphene polygons, showing a broader absorption bandwidth than previous THz absorbers.
IEEE PHOTONICS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Ting Shi, Lei Jin, Lei Han, Ming-Chun Tang, He-Xiu Xu, Cheng-Wei Qiu
Summary: In this research, a low-profile, wideband microwave metamaterial absorber with wide-angle and polarization-independent responses was proposed by controlling multiple resistive electric and magnetic resonances. The use of a vertical periodic crossed mesh array improved wide-angle polarization-independent absorption, and a dispersion-engineered design strategy for angular- and polarization-insensitive responses was described with numerical evidence and electromagnetic response behaviors. Both numerical and experimental results showed that the proposed strategy is an effective way to achieve wide-angle and polarization-independent responses in a broadband spectrum, which is promising for various strategic applications.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Chemistry, Multidisciplinary
Miao Cao, Xiaojun Huang, Lina Gao, Xiaoyan Li, Linyan Guo, Helin Yang
Summary: A transparent all-dielectric water-based broadband metamaterial absorber with excellent performance and stability has been designed, which can be widely used in stealth window weapons and electromagnetic compatibility equipment.
Article
Optics
Zhangkun Zhou, Yan Chen, Yonghong Tian, Jian Liang, Wenxing Yang
Summary: This paper presents the design and study of a broadband metamaterial perfect absorber, which exhibits high absorption efficiency over a wide wavelength range. The absorber is polarization-independent and angle-insensitive, making it suitable for solar energy harvesting applications.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Chenguang Zhang, Shijun Ji, Ji Zhao, Han Wu, Handa Dai
Summary: This paper presents and analyzes a broadband metamaterial absorber operating in the visible light band with ultra wide-angle and polarization-insensitive characteristics. Numerical calculations show an absorptivity of over 96% and an average absorptivity of 99.1%, as well as polarization-independent property and wide-angle characteristics. The physical absorption mechanism of the absorber is analyzed, and the potential applications in solar energy collection and light-to-heat conversion are discussed.
Article
Materials Science, Multidisciplinary
Wen Liu, Jinping Tian, Rongcao Yang, Weihua Pei
Summary: This paper presents a broadband metamaterial perfect absorber using both graphene and metal resonator elements. The absorber achieves wider absorption band with high absorption rate, polarization independence, and wide incident angle characteristics, which can be adjusted by changing the chemical potential of the graphene.
CURRENT APPLIED PHYSICS
(2021)
Article
Physics, Applied
Jiu Fu Ruan, Zhi Tao, Da Wei Zhu, Zi Fan Meng, Sheng Min Pan
Summary: This article proposes a broadband perfect metamaterial absorber based on surface plasmon resonance, which can achieve over 90% absorption in the visible and near-infrared range and near-unity absorption in a certain wavelength range. Additionally, this absorber is insensitive to incident and polarized angles.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Jian Qiao, Yufu Liu
Summary: In this study, a broadband metamaterial absorber based on a single square-loop resistive frequency selective surface was developed and demonstrated to have scalable high-temperature absorption. By utilizing a mixture of MoSi2 powder, Al powder, and water glass, the RFSS arrays showed a significant decrease in sheet resistance and high broadband absorption performance. The experimental and simulation results agreed well under certain conditions, providing promising potential for practical applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Jun Zhu, Changsong Wu, Yihong Ren
Summary: The study proposed a metamaterial absorber composed of graphene, and demonstrated that dynamic tuning of the absorption range and absorption bandwidth could be achieved by adjusting the Fermi level of the graphene. This has theoretical and engineering significance in the domains of thermal photo-voltaics, solar cells, and sensors.
RESULTS IN PHYSICS
(2021)
Article
Computer Science, Information Systems
Md Jasim Uddin, Mohammad Habib Ullah, Syed Zahurul Islam
Summary: This research demonstrates the design and realization of a dual-band, polarization, and incident angle insensitive metamaterial absorber with high absorption rates and unique dual resonances by controlling and manipulating the artificial structure. Through the investigation of constitutive property parameters and symmetric design structure, it is shown that the special characteristics of the proposed artificial structure lead to a near-unity absorption, making it suitable for various applications such as solar cells and detection.
Article
Optics
Tanmay Bhowmik, Bhairov Kr. Bhowmik, Pranav Kr. Pandey, Gagan Kumar, Debabrata Sikdar
Summary: By engineering meta-atoms, tunable metamaterials have opened up new possibilities for active control of light absorption. In this study, a broadband electrically-tunable metamaterial absorber is proposed for simultaneous modulation of reflected light amplitude in the O-band and C-band. Through the coupling of gap plasmon resonance and epsilon-near-zero phenomenon, real-time control of reflected light amplitude is achieved. The proposed metamaterial absorber demonstrates more than 80% absorption over a 370 nm spectral window and allows for amplitude modulation with high extinction ratios at specific wavelengths.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Optics
Baoqing Wang, Cuiping Ma, Peng Yu, Alexander O. Govorov, Hongxing Xu, Wenhao Wang, Lucas V. Besteiro, Zhimin Jing, Peihang LI, Zhiming Wang
Summary: In this work, an ultra-broadband nanowire metamaterial absorber composed of vertically aligned dielectric nanowires with coaxial metallic rings is proposed. The absorber exhibits strong absorption from 0.2 to 7 μm wavelength range, making it suitable for various applications.
PHOTONICS RESEARCH
(2022)
Article
Physics, Applied
Kenki Murakami, Wakana Kubo
Summary: A rapid and simple method using deep reinforcement learning is proposed for optimizing metamaterial absorbers dedicated to thermal radiation absorption. The ideal geometry for a broadband metamaterial absorber is generated after 4 hours, demonstrating the effectiveness of this technique for rapid and effective optimization of metamaterial absorbers.
APPLIED PHYSICS EXPRESS
(2023)
Article
Physics, Condensed Matter
Tao Chen, Weijie Jiang, Xianhua Yin
Summary: This paper proposes a dual-band tunable absorber with a graphene-dielectric-metal structure as a sensor in the terahertz region, which achieves resonance frequency adjustment by tuning the chemical potential of graphene and exhibits polarization and angle insensitivity. Simulation results demonstrate the structure's maximum sensitivity, Q factor, and figure-of-merit, indicating promising applications in biomedical diagnosis and environmental monitoring.
SUPERLATTICES AND MICROSTRUCTURES
(2021)