Article
Multidisciplinary Sciences
Nanli Mou, Bing Tang, Jingzhou Li, Hongxing Dong, Long Zhang
Summary: Researchers have developed a thermally switchable terahertz metasurface that can achieve high transmission and ultra-broadband absorption at different temperatures, making it insensitive to the incident angle. The structure is highly scalable and has potential applications in areas such as optical switching, terahertz imaging, and filtering.
SCIENTIFIC REPORTS
(2022)
Article
Physics, Applied
Jingda Wen, Qiang Ren, Ruiguang Peng, Qian Zhao
Summary: This paper presents a water-based metasurface absorber capable of ultra-broadband absorption in both microwave and infrared radiation, with potential applications in EM radiation prevention, stealth technology, and energy harvesting. The absorber achieves over 90% polarization-insensitive and wide-angle absorption from 7.2 to 100 GHz, with a relative bandwidth of 173%. It also offers tunable absorption and infrared radiation with thermally tunable absorption, making it suitable for practical shaped structures in both civil and military domains.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Senfeng Lai, Yanpei Guo, Guiyang Liu, Yang Liu, Chen Fu, Huiyu Chang, Yanghui Wu, Wenhua Gu
Summary: This high-performance microwave absorber offers ultra-broadband absorption, mechanical flexibility, and high optical transparency, with an absorption rate of over 90% and over 99% in the range of 30 GHz to 33.6 GHz.
IEEE PHOTONICS JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Qing Xiong, Honghao Yu, Ye Zhang, Xiangyu Gao, Changhong Chen
Summary: A broadband all-dielectric metasurface absorber was presented, with elliptical nanohole arrays embedded in the doped device layer of a silicon-on-insulator wafer, achieving enhanced near infrared absorption. Magnetic dipole resonances were found to predominantly contribute to the absorption enhancement through detailed multipole decomposition, and the large bandwidth was attributed to the superposition of multiple absorption peaks from the resonances. This simple absorber design, compatible with CMOS techniques, shows potential for broadband photodetectors of Si and even Ge, where photocarrier excitation originates from interband transitions in Ge-based photodetectors.
RESULTS IN PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Yuwei Huang, Kelson Kaj, Chunxu Chen, Zhiwei Yang, Sheikh Rubaiat Ul Haque, Yuan Zhang, Xiaoguang Zhao, Richard D. Averitt, Xin Zhang
Summary: This article introduces a thin membrane silicon metasurface absorber that achieves very high absorption over a bandwidth of approximately 500 GHz. The absorber can be used in terahertz devices such as detectors, modulators, and switches.
Article
Chemistry, Multidisciplinary
Cuiping Ma, Peng Yu, Wenhao Wang, Yisong Zhu, Feng Lin, Jiaying Wang, Zhimin Jing, Xiang-Tian Kong, Peihang Li, Alexander O. Govorov, Dong Liu, Hongxing Xu, Zhiming Wang
Summary: This paper theoretically investigates the dynamics of thermally induced fluid convection of a chiral plasmonic metasurface and proposes the concept of optofluidic circular dichroism. Results show different fluid velocities of thermally induced convection around a chiral plasmonic metasurface under different circularly polarized excitation. This concept can potentially be used to induce chiral fluid convection in various optofluidics applications.
Article
Engineering, Electrical & Electronic
Jianing Yang, Hai Xin, Ming-Chun Tang
Summary: This paper presents a broadband, low-profile, and planar reflectarray (RA) antenna based on an achromatic metasurface. The achromatic metasurface offers broadband focusing capabilities compared to conventional RAs. The RA antenna has a wide fractional bandwidth of 58.2% at a range of 8.9-16.2 GHz and significantly enhances the feeding antenna's gain from 7.3 to 17 GHz. The developed RA antenna serves as a promising device for long-distance integrated communication systems with its excellent broadband performance, high gain, low profile, and ease of fabrication.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Physics, Applied
Wei Du, Qianqian Wang, Zhendong Yan, Xiulian Xu, Xiaoyong Xu, Jingguo Hu
Summary: In this study, we propose a new design of a periodic bimetallic nanotriangle structure with a thick gold plate to achieve broadband polarization-insensitive perfect visible light absorption. The structure demonstrates an average absorption of 95.79% in the wavelength range of 400 nm to 800 nm. The multiple localized surface plasmon resonances of the bimetallic nanostructure play a significant role in achieving this broadband perfect absorption in the visible region. The physical mechanism of the broadband perfect absorption is well explained using impedance matching theory. Moreover, the structure exhibits a high average photo-thermal conversion efficiency of up to 93% over a wide temperature range.
APPLIED PHYSICS EXPRESS
(2023)
Article
Physics, Multidisciplinary
Yang Fu, Helin Yang, Houyuan Cheng, Shanshan Liu, Shangru Li, Aidong Zhang, Dinge Wen
Summary: In this paper, a polarization-sensitive absorption and transmission polarization conversion multifunctional metasurface is designed, which can modulate and convert electromagnetic waves with different polarizations. The proposed design is verified through optimization and experimental measurements.
Article
Engineering, Electrical & Electronic
Shreyas Charola, Shobhit K. Patel, Juveriya Parmar, Rajendrasinh Jadeja
Summary: We proposed an angle insensitive and broadband I-shaped metasurface-based resonator to enhance absorption in the visible region. By carefully selecting the structure parameters, a wideband absorption of more than 95% from 550 to 651THz is achieved. The absorber is simple in design and insensitive to oblique incidences, making it suitable for applications in solar cells and photonics sensors.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Physics, Applied
Yuzhou Ran, Lihua Shi, Jianbao Wang, Yao Ma, Jie Li, Yicheng Liu
Summary: The proposed absorption-diffusion integrated metasurface achieves high-performance stealth of electromagnetic waves with high angular stability in an ultrabroad frequency band. By optimizing the arrangement of meta-atoms, the metasurface achieves polarization-independent radar cross section (RCS) reduction values over -10 dB and up to -30 dB in specific frequency ranges. The effectiveness of the metasurface is demonstrated through experiment and simulation results, showing better RCS reduction performance compared to other published literature.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Qinyu Qian, Chinhua Wang, Li Fan, Liwen Cheng, Haitao Chen, Liang Zhao
Summary: This article introduces an ultra-broadband metasurface perfect absorber based on triple Mie resonances from three sets of nanopillars, suitable for visible and NIR region with high absorption and wide angular-insensitivity. Fabrication of the metasurface structures is efficiently achieved through double-beam UV interference lithography and sputter coating depositions. Experimental results show high absorption rates averaging 0.961 in the wavelength band from 400 to 1800 nm.
Article
Optics
Zhe Shen, Mengyuan Du
Summary: The proposed refractive index sensor composed of a nanoring array and a Fabry-Pdrot resonant cavity exhibits high comprehensive performance, with both polarization insensitivity and high sensing sensitivity and FOM in two bands, making it suitable for practical applications.
Article
Chemistry, Physical
Ran Wang, Song Yue, Zhe Zhang, Yu Hou, Hongda Zhao, Shitian Qu, Man Li, Zichen Zhang
Summary: This paper numerically demonstrates a broadband perfect absorber in the visible range, which has a high absorptance and potential applications in photovoltaics and photodetection.
Article
Engineering, Electrical & Electronic
Zhipeng Ding, Wei Su, Hong Wu, Wenlong Li, Yuanhang Zhou, Lipeng Ye, Hongbing Yao
Summary: This article proposes a novel single-layered graphene metasurface absorber (GMSA) that achieves thinness, lightness, broadband, high absorption, and tunability. The GMSA differs from common hybrid patterns by adopting a graphene layer with a simple multi-square ring structure. The simulation results show that the GMSA can achieve broadband absorption in the terahertz frequency range, making it suitable for various applications.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
