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Article
Optics
Meng Liu et al.
Summary: The authors presented a tunable- and switchable-metamaterial absorber at the terahertz frequency, which can switch between traditional and coherent absorber states. By manipulating the conductivity and phase of the materials, the absorptivity can be dynamically modified in different states.
OPTICS COMMUNICATIONS
(2022)
Article
Optics
Jinzhan Zhong et al.
Summary: A Poincare sphere analogue for optical vortex knots is proposed in this paper. The states on the analogue represent light fields containing knotted vortex lines in three-dimensional space. The changes in states on the latitude and longitude lines result in spatial rotation and scale change of the optical vortex knots. Furthermore, the experimental generation and observation of these analogue states provide new insights for the evolution and control of singular beams and can be extended to polarization topology.
Article
Energy & Fuels
Binghong Chen et al.
Summary: A novel molten salt energy storage-solar thermophotovoltaic integrated system was proposed in this study, which can improve the efficiency of the system and increase the output power, showing promising application prospects in small-scale distributed energy utilization.
Article
Optics
Hui Mei et al.
Summary: The recent utilization of metamaterial design has prompted a new stage of research on electromagnetic metamaterial absorbers (EMMAs), enabling integration of structure and function. Progress is focused on summarizing developments in structural design, absorbing performance, fabrication methods, and EMMA mechanisms. Future studies are expected to focus on shortcomings in current research and developing trends.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Chemistry, Physical
Kun Yu et al.
Summary: This paper proposes a plasmonic absorber composed of non-concentric graphene nanodisk arrays, which can achieve nearly perfect absorption in the mid-infrared spectral range. The influences of dielectric layer thickness, graphene nanodisk size, and incident conditions on absorption are studied. The absorber has potential applications in optical detectors, tunable sensors, and band-pass filters.
Article
Optics
Fei Wang et al.
Summary: The proposed switchable perfect absorber combines broadband and narrowband absorption characteristics based on alternating dielectric and metal nano-film structures, which has significant implications for practical device development and applications.
Article
Materials Science, Multidisciplinary
Zhendong Wu et al.
Summary: This paper introduces a tunable perfect absorber based on a graphene metamaterial, with dynamic control over absorption peaks by manipulating the permittivity of graphene and relaxation time. It shows great potential in applications such as infrared, filtering, and terahertz detection.
OPTICAL MATERIALS EXPRESS
(2021)
Article
Materials Science, Multidisciplinary
Ziying Zhang et al.
Summary: This study demonstrates a chiral-selective metasurface absorber using a single-layer free-standing metasurface and coherent control method, actively tuning the strength of chiral-selective behavior by changing the phase difference between two coherent inputs. It achieves near unity absorption for one circularly polarized incidence and high-efficiency cross-polarization conversion for the other circularly polarized incidence. This approach enriches functionalities and improves the performance of conventional single-layer metasurfaces, with potential applications in various practical cases.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Sha Hu et al.
Summary: The study demonstrates multidimensional switchable images and 3D integrated beam splitters based on hyperbolic metamaterials (HMMs), achieving a switchable image and a broadband beam splitter through the design of HMMs with different performance. By integrating the multidimensional beam splitter with a filter metamaterial, the separation of light by space and wavelength is further achieved.
Article
Engineering, Electrical & Electronic
Pouria Zamzam et al.
Summary: This paper introduces a new model of multi-layer metamaterial perfect absorber in the terahertz region, with an absorption rate of 99.99%. By adjusting parameters, dual-band and broadband absorption effects can also be achieved.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Xuemei Du et al.
Summary: In this theoretical study, a broadband switchable metamaterial absorber with excellent properties is proposed, achieving over 90% absorptivity and over 93% reflectivity in the terahertz band. The switching intensity exceeds 83% by tuning the chemical potential of graphene. Physical mechanisms and reflection mechanisms are investigated through impedance matching theory and detailed numerical calculations, accelerating the development of terahertz broadband switchable devices.
IEEE PHOTONICS JOURNAL
(2021)
Article
Optics
Xinlei Zhang et al.
Summary: This paper introduces a novel tunable terahertz metamaterials polarization converter, utilizing innovative band splicing technology and temperature adjustment to extend the operating band to a broadband absorber. Simulation results show that the combination of four different units significantly widens the working band, achieving cross-polarization conversion in a wide frequency range.
APPLIED PHYSICS B-LASERS AND OPTICS
(2021)
Article
Physics, Applied
Zhen Xue et al.
Summary: The authors introduced a tunable perfect metamaterial absorber based on graphene for microwaves, achieving perfect absorption at all angles and offering promising possibilities for wave manipulation in smart and multifunctional electromagnetic devices.
APPLIED PHYSICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Runhua Zhou et al.
Summary: The tunable broadband terahertz absorber designed in this paper consists of graphene, silica medium, and phase change material Vanadium dioxide (VO2). By adjusting the parameters of the absorber, different absorption rates can be achieved within different frequency ranges. This absorber can be widely used in fields such as THz tunable filters, sensors, switches, and modulators due to its large tunability.
Article
Nanoscience & Nanotechnology
Qing Leng et al.
Summary: The study investigates the second-harmonic generation of monolayer transition metal dichalcogenides on suspended silver film, showing a significant enhancement of the SHG signal. The enhancement is attributed to the electric field amplification induced by symmetric surface plasmon polaritons (SPPs) in the silver grating.
Article
Materials Science, Multidisciplinary
Miao Pan et al.
Summary: This paper presents a square ring-shaped triple-band perfect absorber based on graphene, which achieves 99% absorption rate in the terahertz band. It has good angular polarization tolerance and sensitivity, indicating potential applications in sensing and light detection fields. The strong tunability of the absorber also shows great application prospects in the infrared and terahertz band.
RESULTS IN PHYSICS
(2021)
Article
Physics, Multidisciplinary
Wei Yin et al.
Summary: A 3D dual-band near-perfect absorber for THz sensing applications is proposed, with absorption efficiency reaching 99.0 and 97.0% at specific frequencies. The absorber can independently tune double absorption peaks and exhibits high sensitivity sensing capabilities.
FRONTIERS IN PHYSICS
(2021)
Article
Optics
Yisong Lv et al.
Summary: This paper studies the absorption performance of a metamaterial absorber based on a three-layer graphene structure in the terahertz frequency band, achieving dual-band, tri-band, and quad-band absorption with polarization independence and wide incident angle absorption characteristics. The frequency and intensity of absorption peaks can be adjusted by changing graphene properties and structural parameters, providing flexible design ideas for multibandwidth perfect absorption and potential applications in terahertz range sensors and optoelectronic devices.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2021)
Article
Optics
Yan Liu et al.
Summary: An absorber based on hybrid metamaterial with vanadium dioxide and graphene achieves dynamically switchable dual-broadband absorption in the terahertz regime by controlling the phase transition of vanadium dioxide and the Fermi energy level of graphene. The absorber can achieve high absorptance in high-frequency broadband and low-frequency broadband, with the absorption intensity being continuously adjustable by electrically controlling the Fermi energy level of graphene. The absorption window can be further broadened by adjusting geometrical parameters, making the absorber suitable for applications such as filtering, sensing, cloaking objects, and switches in the terahertz regime.
Article
Nanoscience & Nanotechnology
Deng-Yun Lu et al.
Summary: A black phosphorus/waveguide terahertz plasmonic sensing structure was proposed in this study, achieving imaging sensitivity of up to 9.978 x 10(3) RIU-1 for gas detection. The structure exhibits optically tunable detection sensitivity due to the in-plane anisotropic plasmonic property of black phosphorus.
PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Jiao Wang et al.
Summary: A tunable triple-band absorber based on bulk-Dirac-semimetal metasurface is proposed in the terahertz range. The design consists of a BDS film with dual ring slots and a dielectric layer, effectively absorbing incident plane waves at different frequencies. The absorber has good stability, wide incident angle coverage, and potential applications in sensors, thermal emitters, and energy harvesting.
IEEE PHOTONICS JOURNAL
(2021)
Article
Optics
Yu Zhou et al.
Summary: Broadband metamaterial absorbers with high absorption, ultrathin thickness and easy configurations are researched and demonstrated in this paper, paving the way for enhancing the optical performance in applications of infrared thermal emitters, imaging and photodetectors.
LIGHT-SCIENCE & APPLICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Jun Zhu et al.
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
Materials Science, Multidisciplinary
Baohe Zhang et al.
Summary: This paper proposes a polarization and angle-insensitive multi-band adjustable terahertz absorber, which has been numerically investigated to show high absorptivity at multiple resonance frequencies. The absorber can dynamically tune its resonance frequencies by varying the chemical potential, and exhibits insensitivity to polarization state and wide-angle absorptivity. The proposed absorber has potential applications in various scientific fields such as refractive sensors, solar absorption, stealth technology, and optoelectronic devices.
RESULTS IN PHYSICS
(2021)
Article
Optics
Jipeng Wu et al.
Summary: Through investigating the phenomenon of coherent perfect absorption (CPA) with bulk Dirac semimetal (BDS) thin film, it is found that CPA can be achieved under different polarizations and incidence circumstances, and its frequency and dynamic regulation can be adjusted by changing the thickness of the thin film and Fermi energy.
CHINESE OPTICS LETTERS
(2021)
Article
Computer Science, Information Systems
Ri-hui Xiong et al.
Summary: This study demonstrates a graphene-metasurface structure for tunable wide-incident-angle terahertz wave absorption, with an absorption rate above 80% at incident angles of 0-60 degrees in frequencies ranging from 0.82 to 2.0 THz. The results have significant implications for the application of terahertz wave communications and biomedical imaging/sensing systems.
FRONTIERS OF INFORMATION TECHNOLOGY & ELECTRONIC ENGINEERING
(2021)
Article
Physics, Applied
Jihua Zou et al.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2020)
Article
Optics
Hairong He et al.
Article
Energy & Fuels
Zhengqi Liu et al.
Article
Materials Science, Multidisciplinary
Yuhui Zhang et al.
Article
Optics
Tongling Wang et al.
Article
Optics
Haiyu Meng et al.
Article
Engineering, Electrical & Electronic
Bin Tang et al.
IEEE PHOTONICS JOURNAL
(2020)
Article
Optics
Rasoul Alaee et al.
Article
Optics
Oleg Mitrofanov et al.
Article
Materials Science, Multidisciplinary
Tongling Wang et al.
RESULTS IN PHYSICS
(2020)
Article
Materials Science, Multidisciplinary
R. M. H. Bilal et al.
RESULTS IN PHYSICS
(2020)
Article
Computer Science, Information Systems
Yubing Zhang et al.
Article
Multidisciplinary Sciences
Huan Liu et al.
SCIENTIFIC REPORTS
(2019)
Article
Optics
Xiao Jin et al.
OPTICS COMMUNICATIONS
(2019)
Article
Chemistry, Physical
Li-Ping Sun et al.
Review
Materials Science, Multidisciplinary
Qiong He et al.
ADVANCED OPTICAL MATERIALS
(2018)
Article
Optics
D. Y. Lu et al.
Article
Physics, Applied
Weiren Zhu et al.
APPLIED PHYSICS LETTERS
(2016)
Article
Multidisciplinary Sciences
Xiaosai Wang et al.
SCIENTIFIC REPORTS
(2016)
Article
Materials Science, Multidisciplinary
Choon How Gan et al.
