Article
Chemistry, Multidisciplinary
Hai Lin Wang, Hui Feng Ma, Mao Chen, Shi Sun, Tie Jun Cui
Summary: A reconfigurable multifunctional metasurface is proposed in this paper, which demonstrates real-time control of transmission, absorption, and reflection of electromagnetic waves, as well as independent control of vertical and horizontal polarized waves, with broad application potential.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Optics
Yu Bi, Lingling Huang, Ruizhe Zhao, Hongqiang Zhou, Weiwei Zhang, Shuangqi Zhu, Naqeeb Ullah, Xiaowei Li, Yongtian Wang
Summary: The magneto-optical metasurface is a nanophotonic device with great potential that can dynamically modulate the properties of light, achieving effects such as dynamic switching of holographic display.
Article
Materials Science, Multidisciplinary
Liang Wei Wu, Qiang Xiao, Yue Gou, Rui Yuan Wu, Peng Xu, Ye Ming Qing, Zheng Xing Wang, Lei Bao, Hui Feng Ma, Tie Jun Cui
Summary: In this study, a reflection-transmission reconfigurable digital coding metasurface is proposed, which can switch between reflection and transmission working states and integrate the functionalities of EM diffusion and encrypted holography.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Multidisciplinary Sciences
Tao Yan, Qian Ma, Shi Sun, Qiang Xiao, Iqbal Shahid, Xinxin Gao, Tie Jun Cui
Summary: The article introduces an anisotropic digital metasurface technology that can project polarization multiplexing patterns at microwave frequencies, along with a modified calculation algorithm and coding metamaterial unit. By comparing experimental measurements with simulation results, the effectiveness of the designed metasurface is validated.
ADVANCED THEORY AND SIMULATIONS
(2021)
Article
Engineering, Electrical & Electronic
Ruoqi Deng, Boya Di, Hongliang Zhang, Yunhua Tan, Lingyang Song
Summary: This letter presents a reconfigurable holographic surface (RHS) for the sixth-generation (6G) wireless communications, which offers accurate multi-beam steering with low power consumption. By utilizing holographic technique for amplitude-controlled beamforming, the proposed solution enables convenient implementation of transceivers.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Xiaobin Liu, Sijia Li, Chengyuan He, Huanhuan Yang, Xiangyu Cao
Summary: A digital coding metasurface is proposed to generate multi-beam and multi-mode orbital angular momentum (OAM) wave in the full space. The 3-bit coding elements are designed for multifunctional integrated digital coding metasurface (MIDCMS) based on the propagation phase theory. The variable-sized phase-shift scheme is applied on metal structures to realize different functionalities in linearly polarized (LP) incidence. The phase distribution of MIDCMS is determined by the pattern convolution theorem. The transmitted and reflected wavefronts are manipulated simultaneously through MIDCMS. As a proof of concept, a metasurface device was fabricated and measured for the four-beam OAM with +1 mode in transmission space and the four-beam OAM with -1 mode in reflection space. Both experimental results and simulated values verify that the proposed MIDCMS can effectively realize the full-space multi-beam multi-mode OAM generation and improve the capacity of information channels, which has potential applications for comprehensive implementations in the future wireless communication systems.
RESULTS IN PHYSICS
(2023)
Article
Physics, Multidisciplinary
Pengtao Lai, Zenglin Li, Wei Wang, Jia Qu, Liangwei Wu, Tingting Lv, Bo Lv, Zheng Zhu, Yuxiang Li, Chunying Guan, Huifeng Ma, Jinhui Shi
Summary: In this study, a transmissive anisotropic coding metasurface is proposed, which enables independent control of two orthogonal polarizations. It has been experimentally verified that it can achieve OAM beam of right-handed polarized wave, contributing to the enrichment of polarization manipulation field and the development of transmissive coding metasurfaces.
Article
Chemistry, Multidisciplinary
Hai Xia Liu, Yi Cen Li, Fang Jie Cheng, Xin Wang, Ming Yang Chang, Hao Xue, Song Zhang, Jia Qi Han, Guan Xuan Li, Long Li, Tie Jun Cui
Summary: This paper presents a holographic tensor metasurface (HTM) for flexible regulation of polarization and energy distributions, enabling simultaneous transmissions of power and information. By combining with a high isolation dual-polarization receiving metasurface, a novel system for simultaneous wireless information and power transmissions (SWIPT) is established. Experimental results verify that this system is capable of simultaneous transmission of information and power, which has potential applications in the development of smart cities.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Optics
Bin Ren, Yuxin Feng, Shuai Tang, Jin-Lei Wu, Bingyi Liu, Jie Song, Yongyuan Jiang
Summary: In this work, an ultrathin 2-bit anisotropic Huygens coding metasurface (AHCM) composed of bilayer metallic square-ring structures is designed for flexible manipulation of terahertz waves. By excitation of electric and magnetic resonances on coding meta-atoms, full phase coverage and significantly low reflection are achieved. Anomalous refraction of x- and y-polarized incident waves in opposite directions is accomplished by encoding the elements with distinct coding sequences. In addition, the designed AHCM can also serve as a transmission-type quarter-wave plate, demonstrating its multifunctionality.
Article
Engineering, Electrical & Electronic
Yanpeng Zhang, Xiaocha Liu, Mengxue Li, Haipeng Wang, Guo-Min Yang
Summary: This paper designs an angle sensitive transmission metasurface unit structure, which has good transmission performance for TE wave incidence and linear phase response with a maximum phase difference of 180° when the incidence angle changes in the range of -45° and +45°. A reconfigurable design of the metasurface unit is realized by loading a varactor, extending the phase difference to 270° to satisfy the demand of multibit metasurface. Based on the characteristics of angle sensitivity and reconfigurability, a new 1-bit digital coding angle sensitive metasurface is proposed. The simulation and measurement results demonstrate its capability to form different beams for multibeam modulation with the same frequency and polarization.
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Xinyun Song, Xudong Bai, Weiren Zhu
Summary: A varactor-based metasurface is proposed in this paper for dynamic and continuous modulation of reflection, transmission, and absorption. By controlling the bias voltages applied to the varactors, nearly full-range and continuous modulation of reflection, transmission, and absorption can be achieved.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Sijia Li, Zhuoyue Li, Bowen Han, Guoshuai Huang, Xiaobin Liu, Huanhuan Yang, Xiangyu Cao
Summary: This paper proposes a multifunctional coding metasurface (MCMS) that enables the realization of dual-circularly polarized beams and beam focusing with transmission and reflection. The phase of the transmissive wave is controlled by rotating the elements, which are designed with specific void patterns. Experimental results verify the performance of the proposed metasurface and demonstrate its potential applications in wireless communications.
FRONTIERS IN MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Boya Di
Summary: The future sixth-generation wireless communications are expected to achieve low power, high throughput transmissions using reconfigurable holographic metasurfaces. These metasurfaces offer flexible beam steering capabilities with low power and hardware costs, making them a promising solution for future wireless communication systems.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Ololade M. Sanusi, Ying Wang, Langis Roy
Summary: This paper presents a multifunctional reconfigurable metasurface based on liquid metal injection. The metasurface is formed by two switchable microfluidic layers and can be reconfigured into different states, exhibiting different properties. Experimental results confirm the polarization conversion performance of the metasurface, making it suitable for modern integrated antenna array systems.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Samiran Pramanik, Saikat Chandra Bakshi, Chaitali Koley, Debasis Mitra, Alessio Monti, Filiberto Bilotti
Summary: We develop a new concept of three-states polarization converting metasurface (TS-PCM) based on p-i-n diodes. The proposed structure can achieve three distinct wave manipulation functionalities: linear polarization to orthogonal linear polarization (LP-OLP), linear polarization to circular polarization (LP-CP), and linear polarization to full reflection (LP-FR) state. Unlike previous structures, these conversion features are simultaneously achieved in different frequency ranges based on the on/off state of diode. Experimental results from a fabricated prototype match well with the simulated ones.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Article
Physics, Applied
Jun Wu, Ye Ming Qing
Summary: The recent review points out that existing schemes of nonreciprocal radiation are limited by narrow-operated bandwidth and small angular range. In this study, a wide-angle and broadband nonreciprocal radiation based on cascaded dielectric and Weyl semimetal grating is investigated. The broadband nonreciprocal radiation performance remains stable in a wide parameter space and can be flexibly controlled through changes in the axial vector of the Weyl semimetal. The conclusions of this study could pave the way for designing energy harvesting and conversion devices with improved efficiency.
APPLIED PHYSICS LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Ze-Tao Huang, Hao-Yi Jiang, Zi-Ye Wang, Ye-Ming Qing, Bing-Xiang Li
Summary: We propose a thermally-electrically tunable perfect absorber based on amorphous silicon (a-Si) and graphene, which can achieve narrow bandwidth perfect absorption due to guided-mode resonance. The resonance wavelength can be thermally tuned with high efficiency and linear controllability through Joule heating, thanks to the linear relationship between refractive index of a-Si and temperature. Additionally, by adjusting the gate voltage, the chemical potential of graphene can be electrically modified, enabling a rapid switching of perfect absorption and perfect reflection. The proposed absorber features a simple structure, perfect absorption, and efficient thermal-electric tunability, showing great potential in applications such as modulators, optical switches, and selective filters.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2023)
Article
Optics
Ye Ming Qing, Zetao Huang, Haoyi Jiang, Bingxiang LI
Summary: This article proposes a polarization-dependent thermal-tunable graphene metamaterial for manipulation of light absorption. The structure consists of a graphene monolayer, amorphous silicon photonic crystal, and lossless metallic mirror, allowing for anisotropic absorption due to its rotational asymmetry. By adjusting the polarization angle, the absorption amplitude can be flexibly controlled, enabling various functions including absorbers, modulators, switches, and spectral engineering. Furthermore, the spectral response can be accurately controlled by thermal tuning with high tuning efficiency, making this graphene-based metamaterial desirable for potential applications.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Shi Sun, Hui Feng Ma, Yue Gou, Tai Yi Zhang, Liang Wei Wu, Tie Jun Cui
Summary: Spin-decoupled metasurfaces have attracted much attention for their ability to independently control the phase of two orthogonally circularly polarized waves. However, previous metasurfaces could only achieve two decoupled polarization conversion channels. This study proposes a spin- and space-multiplexing metasurface that can independently control the phase of four different circular polarization conversion channels. Experimental validation using multi-channel independent holographic imaging shows the potential to greatly improve information capacity and utilize polarization and space resources effectively.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Thermodynamics
Jun Wu, Ye Ming Qing
Summary: The study focuses on the perfect nonreciprocal radiation effect for extreme small incident angle. The proposed scheme involves a patterned magneto-optical (MO) material on a continuous MO film backed with a metallic mirror and coated with a metallic film. Near-complete nonreciprocal radiation is achieved at resonance with perfect emission and extreme small absorption for an incident angle of only 1o. This effect is attributed to the excitation of guided mode resonance in the MO material, which is confirmed by investigating the magnetic field intensity distribution and impedance matching theory. The scheme shows promising potential for improving energy conversion in various fields including solar cells and thermophotovoltaics.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2023)
Article
Chemistry, Multidisciplinary
Danjun Liu, Yunxia Wang, Qiang Zhang, Ye Ming Qing, Yaorong Wang, Haitao Huang, Chi Wah Leung, Dangyuan Lei
Summary: This research presents a photoswitchable molecule-sandwiched metallic particle-on-film nanocavity that can achieve light-controlled linear and nonlinear optical tuning. It has the potential for developing miniaturized integrated optical circuits for ultrafast all-optical information processing and communication.
Article
Materials Science, Multidisciplinary
Tai Yi Zhang, Shi Sun, Yue Gou, Hai Lin Wang, Hui Feng Ma, Tie Jun Cui
Summary: In this paper, a frequency-multiplexed holographic-reflective-integration (HRI) coding metasurface is proposed, which can independently manipulate surface waves (SW) and spatially propagating waves (SPW) at different frequencies. The performance of the metasurface is validated by simulation and measurement results.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jun Wu, Ye Ming Qing
Summary: A nonreciprocal thermal emitter, consisting of a high refractive dielectric grating atop a Weyl semimetal grating and a metallic reflector, is proposed. The emitter exhibits unequal directional absorption and emission, achieving strong nonreciprocal radiation. Near-perfect nonreciprocity is realized at just 1o, breaking the constraint of large operating angles faced by existing emitters.
MATERIALS TODAY PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
Zhangjie Luo, Xiang Shan, Xueyao Ren, Kaiping Wu, Yu Chen, Lijiang Hong, Hui Feng Ma, Qiang Cheng, Tie Jun Cui
Summary: A novel intensity-dependent metasurface absorber is proposed, with electrically tunable unit cells controlled by a centralized active module. The module achieves nonlinearity by sensing wave intensities and providing direct-current signals to control the absorptive array. The prototype demonstrates strong intensity-dependent absorption, with the absorptance gradually increasing from 19.4% to 92.7% as the incident power level increases.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Thermodynamics
Jun Wu, Ye Ming Qing
Summary: The recent study highlights the limitation of existing nonreciprocal emitters due to their small angular range occurring at large angles. To overcome this challenge, a novel scheme based on a cascaded dielectric-magneto-optical material grating structure is proposed and investigated. The results show that near-unity emission and little absorption can be achieved at the same wavelength, leading to near-perfect nonreciprocal radiation at an angle of only 1 degree. The underlying physical mechanism is revealed through the distribution of magnetic field amplitude. Additionally, the possibility of achieving strong nonreciprocity with a minimal magnetic field is explored, and the achievable angular ranges of the proposed scheme are investigated. These findings are significant for the advancement of solar cells, photovoltaics, and thermal devices with improved efficiency.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Physics, Applied
Zi Hua You, Hui Feng Ma, Ji Ran Chen, Yue Teng Chen, Tie Jun Cui
Summary: This paper proposes compact plasmonic-power-splitters with arbitrary phase responses in the millimetre waveband based on spoof surface plasmon polaritons (SSPPs). The proposed power splitters have the advantages of path compatibility, high compactness, and customizable phase response. They show good power allocation performance in an ultrawideband range, but the phase responses cannot maintain good consistency in such a wide bandwidth.
PHYSICAL REVIEW APPLIED
(2023)
Article
Materials Science, Multidisciplinary
Jun Wu, Ye Ming Qing
Summary: This study investigates the strong multi-band nonreciprocal radiation with Fibonacci multilayer. By studying a quad-band nonreciprocal radiation effect, it is found that four pairs of near-perfect absorption and emission can be achieved, leading to perfect quad-channel nonreciprocal radiation. The underlying physical mechanism is revealed and the influence of incident angle and geometric parameters on spectral nonreciprocity is also investigated. The scheme can be easily expanded to achieve multi-band nonreciprocal radiation with more than four channels, and it is believed to pave the way for the development of nonreciprocal thermal emitters with more advanced functions.
RESULTS IN PHYSICS
(2023)
Article
Chemistry, Physical
Yue Gou, Hui Feng Ma, Shi Sun, Tai Yi Zhang, Liang Wei Wu, Zheng Xing Wang, Sen Zheng, Tie Jun Cui
Summary: Simultaneous realization of printing and holographic images is an emerging technology that improves optical storage and anti-counterfeiting. This paper proposes a four-channel metasurface that can support four independent circular polarization information channels. The metasurface allows for flexible design of operation frequencies and achieves polarization multiplexing and frequency multiplexing. Experimental results show that printing and holographic images with different handedness can be stored at one or two different frequencies. This metasurface provides a new avenue for the design of photonic devices with multiple functionalities, with potential applications in anti-counterfeiting, data storage, and image display.
Article
Chemistry, Physical
Jun Wu, Ye Ming Qing
Summary: The study investigates the significant enhancement of multi-band nonreciprocal radiation using the Weyl semimetal-dielectric spacer-Thue-Morse multilayer-metallic mirror structure. A novel dual-band nonreciprocal thermal emitter based on this scheme is designed and studied, achieving two pairs of nonoverlapping absorptivity and emissivity spectra and strong dual-band nonreciprocal radiation. The physical origin of this phenomenon is revealed using the amplitude distribution of the magnetic field and impedance matching theory. The dependence of the nonreciprocal radiation properties on incident angle and structure dimensions is investigated, showing stable performance in a large range of dimensions and lower fabrication costs. Moreover, the generation of Thue-Morse multilayer allows easy realization of a multi-band nonreciprocal thermal emitter with more than two bands, providing potential for the development of novel multi-band nonreciprocal thermal emitters.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Jun Wu, Ye Ming Qing
Summary: A tunable near-perfect nonreciprocal thermal emitter is proposed and investigated in this study, which consists of a dielectric plane and a monolayer graphene sandwiched between a subwavelength grating and a Weyl semimetal plane. Near-complete nonreciprocal radiation can be achieved at resonance, breaking the traditional Kirchhoff's law. The physical mechanism, resulting from guided mode resonance, is disclosed by illustrating the magnetic field distribution. Moreover, the performance of the near-perfect spectral nonreciprocity can be flexibly controlled in a wide spectral range through varying the Fermi level of graphene and the axial vector of the Weyl semimetal, which reduces the cost and should be interesting for real application. The conclusions of this paper should prompt the further development of tunable nonreciprocal thermal emitters.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
