Article
Physics, Applied
Huajiang Peng, Xiaoqing Yang, Piqiang Su, Jun Wang, Dezhen Gu, Guangming Jiang, Xin Zhou
Summary: In this paper, a conformal and low thermal infrared radiation (LTIR) broadband metamaterial absorber (MA) with double split resonant rings (SRRs) and NaCl solution (NS) resonant cavity is proposed. The design MA demonstrates high electromagnetic wave absorption and maintains thermal stability and LTIR characteristics under different power EM wave irradiation.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Materials Science, Composites
Mengfei Feng, Kaifu Zhang, Hui Cheng, Yuan Li, Bo Liu, Biao Liang
Summary: This study designs and fabricates a bioinspired nanocomposite material inspired by the special microstructures of papilio palinurus's wing and beetle's elytra. The synthesized nanocomposites exhibit excellent broadband microwave absorption and good mechanical properties. The optimized bioinspired nanocomposite metamaterial possesses a 31.7 GHz effective absorption bandwidth, -47 dB minimum reflection loss, and a thickness of only 6 mm, with a compressive strength of 33.78 MPa. This research provides an efficient way for designing new materials with excellent broadband microwave absorption performance and good mechanical properties.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Manufacturing
Yalan Yang, Chaoyun Song, Rui Pei, Jianping Wang, Zhe Liu, Youran Zhang, Jinzhu Shen
Summary: In this paper, a novel flexible broadband metamaterial absorber (MA) based on textile was proposed, which is composed of resistive film patterns, scuba knitting fabric and metallized fabric. The proposed MA exhibits wide incident angle and bending stability. The design and fabrication process of the MA provide new technical solutions for the design and development of electromagnetic wave absorbing materials.
ADDITIVE MANUFACTURING
(2023)
Article
Materials Science, Multidisciplinary
Mengke Qiao, Xiangcheng Li, Zhangqi Liao, Pingan Chen, Yingli Zhu
Summary: In this study, a high-temperature metamaterial absorber (HMA) with high impedance patterns (multi-octagonal-rings), two quartz (SiO2) layers, and a metallic ground film was designed and simulated. The optimal structural parameters were obtained through the optimization of circuit parameters and HMA size. The interaction of electric and magnetic resonance in multioctagonal rings resulted in a wide absorption bandwidth and excellent absorption performance. Experimental results showed that the structure exhibited good impedance matching performance, and the effective absorption bandwidth (-10 dB) could reach 10.6 GHz from room temperature to 700 degrees C under the combined effect of resonance loss and ohmic loss.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Zehao Zhao, Di Lan, Limin Zhang, Hongjing Wu
Summary: The study introduces a series of polyimide (PI) reinforced composite films with periodic copper-based electroconductive units, showing tunable electrical properties and excellent power loss, multiple scattering, and polarization loss in an alternating electromagnetic field. The obtained films exhibit significant potential as high-performance electromagnetic wave response materials under harsh conditions, with excellent EM shielding performance and specific absorbency value.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Kerem Kaya, Emre Iseri, Wouter van der Wijngaart
Summary: This study introduces easily programmable polymer magnetic composites with high remanence characteristics and the ability to reprogram between different states. The materials exhibit ferromagnetic properties and spin ice characteristics, and the magnetic properties can be controlled by temperature and magnetic field.
MICROSYSTEMS & NANOENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Dandan Chen, Bijun Xu, Zhifang Qiu, Xiaogang Wang, Jun Wu, Kaikai Huang
Summary: In this study, a nickel-based microstructure ultra-broadband absorber for terahertz waves is proposed, which can achieve efficient absorption across the entire terahertz spectrum (0.1 THz-16 THz). The absorber is polarization-insensitive and allows for broad-angle incidence, with low cost and potential applications in various industries including terahertz stealth, sensor technology, imaging, and communication.
RESULTS IN PHYSICS
(2023)
Article
Physics, Multidisciplinary
Shaomei Shi, Xiaojing Qiao, Qicai Jia
Summary: This research proposes a simple method to achieve ultra-broadband microwave absorption by loading only one split ring resonator and one lumped resistor in the absorber's unit cell. The absorber exhibits a low reflection coefficient in the frequency range of 14.20 GHz to 32.98 GHz, with a bandwidth of 18.78 GHz covering the Ku-, K-, and Ka-bands.
Article
Materials Science, Multidisciplinary
Yaqiang Zhang, Haonan Li, Jiahao Ge, Chi Zhang, Jingzhou Li, Cheng Zhang, Ruixiang Deng, Yang Zhang, Hongxing Dong, Long Zhang
Summary: This paper proposes a highly Vis-NIR transparent metamaterial-window with outstanding microwave broadband absorption and practical durability. The experimental results demonstrate excellent absorptivity and shielding effectiveness, and the physical mechanism is explained using a multiple reflections interference model. The gold mesh structure enables the window to have excellent salt spray corrosion resistance and high-temperature stability, making it a promising candidate for anti-electromagnetic interference and electromagnetic shielding in military and civilian applications.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
Lu Feng, Wanchong Li, Yan Wang
Summary: Researchers in this study utilized a metamaterial designing method to optimize FeSiAl alloy for improved electromagnetic wave absorption properties. By adjusting the macrostructural size, absorption performance could be easily regulated, resulting in a well-performing broadband FeSiAl metamaterial.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Yalan Yang, Jianping Wang, Chaoyun Song, Rui Pei, Jayakrishnan M. Purushothama, Youran Zhang
Summary: This paper proposes a flexible embroidery-based metamaterial absorber (MA) that can absorb electromagnetic waves of specific frequency. It is found that the resistive loss of the embroidered frequency selective surface (FSS) plays a dominant role in consuming electromagnetic energy. A suitable embroidery density is the premise for effective electromagnetic energy absorption.
MATERIALS & DESIGN
(2022)
Article
Nanoscience & Nanotechnology
Zhaofeng Wu, Peiguo Liu, Mingtuan Lin, Song Zha, Xiaocheng Ni
Summary: This paper proposes a nonlinear metamaterial (NLMM) concept based on the integration of metamaterial structures and a semiconductor on the same wafer, which exhibits nonlinear behavior to the electromagnetic field energy in the microwave band. The designed NLMM is transparent to low-density electromagnetic radiation fields, while it adaptively becomes opaque to high-density electromagnetic radiation fields. Two types of NLMM are designed to verify the nonlinear characteristics of ultrawide and narrow bands in the microwave band, respectively. The concept of NLMM can be used for the application of the microwave frequency band in electromagnetic protection and detection.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Electrical & Electronic
Laxmikant Dewangan, Megh Sainadh Patinavalasa, Juin Acharjee, Yogesh Solunke, Saptarshi Ghosh, Nipun Kumar Mishra
Summary: This paper presents a polarization-insensitive wide-angle broadband metamaterial absorber for stealth applications at the K band. The absorber is composed of a ladder shape geometry made of copper metal on a metal-backed FR4 substrate, showing over 91% absorptivity from 21.2 to 28.2 GHz for both TE and TM polarized waves under normal incidence. The absorber also exhibits polarization-insensitive responses for different angles of polarization under both TE and TM waves and maintains 80% absorptivity up to 45 degrees incident angles for both TE and TM waves under oblique incidence.
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Huihui Jing, Junping Duan, Yiqing Wei, Jingxian Hao, Zeng Qu, Jiayun Wang, Binzhen Zhang
Summary: In this study, a flexible microwave metamaterial absorber with ultra-broadband and polarization-insensitive characteristics is proposed, characterized, and fabricated. By utilizing a two-layer periodic indium-tin-oxide (ITO) patches array printed on polyethylene terephthalate (PET) dielectric layers, high ohmic loss is generated to achieve high broadband absorption. Simulation results demonstrate that the absorber can achieve absorption greater than 90% in the microwave frequency range of 19.68 to 94.7 GHz. The absorber exhibits polarization-insensitive properties due to the symmetry of its structure, allowing for high absorption over a wide incident angle of 60 degrees. The mechanism of ultra-broadband absorption is discussed through impedance matching theory, surface current distribution, and electric field distribution. Additionally, an equivalent circuit model is used to analyze the impact of structural parameters. The experimental measurements validate the simulated spectra using the bow-frame method. With its advantages of ultra-broadband absorption, polarization-insensitivity, and flexibility, the proposed absorber can find applications in energy harvesting, imaging and sensing, stealth technology, modulation, and more.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Chemistry, Analytical
Pingping Min, Zicheng Song, Lei Yang, Victor G. Ralchenko, Jiaqi Zhu
Summary: A novel conformal metamaterial absorber with simultaneous optical transparency and broadband absorption is proposed in this study. The use of transparent substrates allows for good optical transmittance and flexibility. Experimental results validate the reliability of the design, and the absorber is highly favored for practical applications in microwave engineering due to its absorption performance and versatility.
Article
Materials Science, Multidisciplinary
Chenxi Liu, Fei Yang, Xiaojian Fu, Junwei Wu, Lei Zhang
Summary: This research proposes a graphene-based terahertz metasurface that allows for both phase and amplitude modulation. By carefully designing coding patterns, the metasurface can control the direction and intensity of the beam. This study has broad applications in various fields.
FRONTIERS IN MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Jing Cheng Liang, Lei Zhang, Zhang Wen Cheng, Peng Zhang, Tie Jun Cui
Summary: In this article, a design procedure for a reconfigurable intelligent surface (RIS) and its programmable element is proposed. The reflection phase and amplitude of the programmable element can be jointly controlled by adjusting the states of the varactor and PIN-diode. By introducing metallic vias, the programmable element can maintain stable reflection responses under the illumination of transverse magnetic waves. The beam steering performance of the RIS is verified through theoretical calculations and full-wave simulations.
FRONTIERS IN MATERIALS
(2022)
Article
Optics
W. E. Liu, L. E. Zhang, J. U. N. C. H. E. N. Ke, J. I. N. G. C. H. E. N. G. Liang, C. O. N. G. Xiao, Q. I. A. N. G. Cheng, T. I. E. J. U. N. Cui
Summary: This study proposes a broadband polarization-insensitive polarization rotator (PIPR) that can achieve 90 degrees polarization rotation for incident waves with any azimuth angle. The PIPR consists of substrate integrated waveguide (SIW) units arranged in a checkerboard pattern, providing more than -0.2 dB transmission from 9.5 to 10.9 GHz. The working mechanism of the rotator is explained by analyzing the electric field inside the cavity. A prototype is fabricated and measured, showing satisfactory agreement between simulated and measured results, indicating potential applications of the converter in imaging and communication systems.
Article
Engineering, Electrical & Electronic
Qiang Cheng, Lei Zhang, Jun Yan Dai, Wankai Tang, Jun Chen Ke, Shuo Liu, Jing Cheng Liang, Shi Jin, Tie Jun Cui
Summary: Reconfigurable intelligent surfaces (RISs) offer a new way to alter electromagnetic wave propagation properties and provide possibilities for establishing artificial propagation environments and information manipulation. This article provides an overview of theoretical models of space-time digital metasurfaces and information metasurfaces, the mechanisms of wavefront shaping, and signal modulations in space and time domains during wave-matter interactions.
PROCEEDINGS OF THE IEEE
(2022)
Article
Materials Science, Multidisciplinary
Jing Cheng Liang, Yuan Gao, Zhang Wen Cheng, Rui Zhe Jiang, Jun Yan Dai, Lei Zhang, Qiang Cheng, Shi Jin, Tie Jun Cui
Summary: This study proposes a transparent 2-bit reconfigurable intelligent surface (RIS) with low angular sensitivity, achieved through the use of a transparent dielectric substrate and metal-mesh-based patterns. Simulation and measurement results demonstrate the low angular sensitivity and consistency between beam steering experiments under different coding sequences and incident angles. Further research reveals that the phase response of the RIS is weakly dependent on the incident and receiving directions.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Xiao Qing Chen, Lei Zhang, Shuo Liu, Tie Jun Cui
Summary: A novel method combining artificial neural networks (ANNs) with space-time-coding (STC) digital metasurfaces is proposed for efficient direction of arrival (DOA) estimation. The method achieves high accuracy by analyzing harmonic amplitudes without phases, leading to simplified hardware architecture and improved robustness. Experimental results demonstrate the potential applications of this method.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Optics
Jun Chen Ke, Jun Yan Dai, Jun Wei Zhang, Zhanye Chen, Ming Zheng Chen, Yunfeng Lu, Lei Zhang, Li Wang, Qun Yan Zhou, Long Li, Jin Shan Ding, Qiang Cheng, Tie Jun Cui
Summary: The rapid development of space-time-coding metasurfaces (STCMs) offers a new avenue to manipulate spatial electromagnetic beams, waveforms, and frequency spectra simultaneously with high efficiency. This study proposes a theoretical framework and method to generate frequency-modulated continuous waves (FMCWs) and control their spatial propagation behaviors simultaneously via a novel STCM with nonlinearly periodic phases. The experimental results show good agreement with the theoretical analyses.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Multidisciplinary Sciences
Jun Chen Ke, Xiangyu Chen, Wankai Tang, Ming Zheng Chen, Lei Zhang, Li Wang, Jun Yan Dai, Jin Yang, Jun Wei Zhang, Lijie Wu, Qiang Cheng, Shi Jin, Tie Jun Cui
Summary: A new-architecture space-frequency-polarization-division multiplexed wireless communication system is proposed using an anisotropic space-time-coding digital metasurface, which can improve the channel capacity and space utilization.
NATIONAL SCIENCE REVIEW
(2022)
Article
Engineering, Electrical & Electronic
Wei Liu, Jun Chen Ke, Cong Xiao, Lei Zhang, Qiang Cheng, Tie Jun Cui
Summary: A broadband polarization-reconfigurable converter (BPRC) based on active metasurfaces is proposed, which can achieve polarization-reconfigurable conversion for both linear-polarization (LP) and circular-polarization (CP) incident waves in wide bands by changing the states of p-i-n diodes. The BPRC consists of three-layer metal patches, three-layer dielectric substrates, and p-i-n diodes. The conversion ratio is higher than -1 dB in the frequency range of 7.4-12 GHz, with a relative bandwidth of 47.4%.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Physics, Applied
Xiao Qing Chen, Lei Zhang, Tie Jun Cui
Summary: A physics-driven vector-quantized intelligent autoencoder model is proposed for fast and accurate generation of optimized discrete STC matrices based on desired harmonic scattering patterns. It enhances the practicality and versatility of STC digital metasurfaces.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Wei Liu, Lei Zhang, Jun Chen Ke, Jing Cheng Liang, Jun Yan Dai, Qiang Cheng, Tie Jun Cui
Summary: This article introduces a transmissive metasurface that can manipulate both the polarization and phase of electromagnetic waves. It has the ability to rotate the polarization of linearly polarized waves to any desired azimuth direction and achieve cross-polarization conversion for circularly polarized waves.
ADVANCED OPTICAL MATERIALS
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Massimo Moccia, Giuseppe Castaldi, Lei Zhang, Vincenzo Galdi, Tie Jun Cui
Summary: Space-time-coding digital metasurfaces offer significant potential for advanced field manipulations in the joint space-frequency-polarization domain, and for overcoming limitations in linear and time-invariant electromagnetic systems.
2023 17TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION, EUCAP
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Yi Ning Zheng, Lei Zhang, Xiao Qing Chen, Zhuo Ran Huang, Tie Jun Cui
Summary: This article proposes a low-profile programmable metasurface based on Fabry-Perot cavity and 1-bit coding, operating at a frequency of 5 GHz, which is compact and capable of beam steering. The basic principle and overall structure of the programmable metasurface are presented. The simulated amplitudes, phases, and scattering patterns of meta-atoms are investigated. Due to its compactness, this metasurface shows great potential in applications such as radar-cross-section reduction, radar, imaging, and wireless communications.
2022 IEEE MTT-S INTERNATIONAL MICROWAVE WORKSHOP SERIES ON ADVANCED MATERIALS AND PROCESSES FOR RF AND THZ APPLICATIONS, IMWS-AMP
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Zhuo Ran Huang, Lei Zhang, Xiao Qing Chen, Yi Ning Zheng, Tie Jun Cui
Summary: This paper presents a folded programmable metasurface integrated with a 1-bit polarization-converted coding element at microwave frequencies, featuring low-profile and programmable characteristics. The working principle of the folded programmable metasurface and the design details of the 1-bit polarization-converted coding element are investigated. Full-wave numerical simulations are conducted to demonstrate the effectiveness of the design, highlighting its potential applications in beam steering, imaging, and wireless communications.
2022 IEEE MTT-S INTERNATIONAL MICROWAVE WORKSHOP SERIES ON ADVANCED MATERIALS AND PROCESSES FOR RF AND THZ APPLICATIONS, IMWS-AMP
(2022)
Article
Engineering, Electrical & Electronic
Jing Cheng Liang, Qiang Cheng, Yuan Gao, Cong Xiao, Shang Gao, Lei Zhang, Shi Jin, Tie Jun Cui
Summary: In this work, a novel angle-insensitive RIS meta-atom is proposed, which is capable of maintaining stable phase and amplitude responses at oblique incidences. The fabricated RIS exhibits stable angle performance, with a maximum of 315 degrees phase range and eight digital coding states with 45 degrees stable interval. Numerical simulations and experimental results further confirm the angular reciprocity of the proposed RIS.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)