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
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
Chemistry, Multidisciplinary
Jitendra K. Behera, Kuan Liu, Meng Lian, Tun Cao
Summary: The article presents a reconfigurable HMM perfect absorber based on alternating gold and GST225 layers for the near-infrared region, showing a red-shift of the absorptance peak and omnidirectional, polarization-independent characteristics. The absorptance peak can be reversibly switched in just five nanoseconds by changing the state of GST225.
NANOSCALE ADVANCES
(2021)
Article
Optics
Yulian Li, Wei Gao, Li Guo, Zihao Chen, Changjian Li, Haiming Zhang, Jiajia Jiao, Bowen An
Summary: A dynamically tunable ultra-broadband terahertz perfect metamaterial absorber based on vanadium oxide (VO2) has been proposed, with absorption bandwidth greater than 90% from 3.03 to 8.13 THz. By changing the conductivity of VO2, the absorption intensity can be dynamically tuned from 1.47% to 100%, showing significantly improved bandwidth and flexibility compared to previous reports.
Article
Optics
Pu Wang, Ziang Gao, Zhengshan Xu, Tonggang Zhao
Summary: Solar absorbers are crucial for the development of new energy technologies, but current methods are often complex and fail to achieve high absorption rates across a wide range of wavelengths. In this study, a four-step stacked metamaterial solar absorber is proposed, which achieves near-perfect absorption. The absorber shows high absorption rates due to the propagating surface plasmon resonance (PSPR) and localized surface plasmon resonance (LSPR) modes. It offers broadband, high absorption rates, and high spectrum selectivity, and has promising applications in the renewable energy industry.
Article
Optics
Le Van Long, Nguyen Sy Khiem, Bui Son Tung, Nguyen Thanh Tung, Trinh Thi Giang, Pham Thanh Son, Bui Xuan Khuyen, Vu Dinh Lam, Liangyao Chen, Haiyu Zheng, Youngpak Lee
Summary: A flexible broadband metamaterial perfect absorber (FBMPA) was proposed in this work, using conductive-graphene ink pasted on a polyimide substrate. The FBMPA showed an absorption over 90% covering a wide frequency range, and maintained stable high absorption even under oblique incidence and when wrapped around cylindrical surfaces. The absorption mechanism was explained by perfect impedance matching and dielectric loss of the absorber, providing groundwork for future applications in meta-devices such as sensors, optical filters/switchers, photodetectors, and energy converters.
Article
Chemistry, Multidisciplinary
Yu Cheng, Min Xiong, Ming Chen, Shijie Deng, Houquan Liu, Chuanxin Teng, Hongyan Yang, Hongchang Deng, Libo Yuan
Summary: The research on solar absorbers in recent years has made significant breakthroughs in solving the energy crisis, with absorption rates reaching over 98% in various bands and showing promise for solar energy collection and utilization.
Article
Chemistry, Physical
Chenxu Zhao, Huan Wang, Yanyan Bu, Hui Zou, Xiangfu Wang
Summary: This paper introduces the absorption mechanism and design directions of metamaterial perfect absorbers (MPAs), highlighting equivalent impedance matching, plasma resonance, and interference effect as the main absorption mechanisms. The design aspects of MPAs include multiband absorption, ultra-wideband and ultra-narrowband absorption, polarization and angle insensitive absorption, and dynamically controllable tunable absorption.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Optics
Wei Zhou, Zhenghou Zhu, Ruru Bai
Summary: In this paper, a novel broadband incident angle independent magnetic composite metamaterial absorber with C-band absorbing effect is proposed. After optimizing the dimensions, the absorber achieved peak absorptivity at 7.20 GHz and 15.40 GHz simultaneously, with an effective bandwidth of 4.29 GHz. The experimental results verified the simulation results, indicating that the absorber has good performance.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Physics, Multidisciplinary
Boyi Yao, Qu Zeng, Junping Duan, Li Wei, Jinfeng Kang, Binzhen Zhang
Summary: This study proposes and verifies a tunable and optically transparent water-based wideband metamaterial absorber (MMA) with excellent properties. The absorber can achieve the conversion of absorption band by adjusting the thickness of the water layer, demonstrating flexibility, polarization insensitivity, and broad incident angle stability. Therefore, this research has significant application value in military and medical equipment optical windows.
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
Thermodynamics
Jun Wu, Yasong Sun, Biyuan Wu, Chunlei Sun, Xiaohu Wu
Summary: This article designs and studies a polarization insensitive, broadband and wide-angle perfect metamaterial absorber for solar energy harvesting, which has high absorption rate and large fabrication tolerance. The absorption spectra are consistent with solar spectrum and robust against incident angle changes.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2022)
Article
Physics, Multidisciplinary
Zhi Ren, Wanqing Wang, Yinghui Zhao, Siqi Chang, Guanhua Ren, Songtao Li, Ruoxing Wang
Summary: Based on the phase change properties of vanadium dioxide (VO2), we propose a terahertz metamaterial absorber that can be switched flexibly between ultra-broadband and dual bands. The absorber achieves switching by changing the conductivity of VO2 through thermal control. Simulation results show that the absorber realizes high absorption bandwidth in the ultra-broadband mode and dual-band absorption at specific frequencies in the dual-band mode. This design significantly improves absorption performance compared to previous studies and has potential applications in terahertz devices.
FRONTIERS IN PHYSICS
(2023)
Article
Physics, Applied
Santosh Dasila, Chitti Venkata Krishnamurthy, V. Subramanian
Summary: A miniaturized, broadband absorber with high absorption rate (> 95%) has been proposed and constructed, using quarter-wavelength resonator tubes as rectangular meta-atoms. The study presents the basic theoretical aspects, numerical simulations, fabrication process, and experimental validation of the absorber. The use of simple, fabrication-friendly meta-atoms allows for greater spatial coverage by tiling over large surfaces.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Optics
Ashish Kumar Chowdhary, Tanmay Bhowmik, Debabrata Sikdar
Summary: The study presents an ultrabroadband perfect metamaterial absorber with an unprecedented average absorbance of around 99% in the 300 to 4500 nm spectral range. The design is polarization-independent and angle-insensitive, making it a potential candidate for thermophotovoltaics in solar energy harvesting.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2021)
