相关参考文献
注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article
Optics
Changqing Li et al.
Summary: In this work, dynamically switchable metasurfaces based on vanadium dioxide are presented, achieving state switching of reflected wavefront for circularly polarized wave in the terahertz band. Phase modulation is achieved by rotating the vanadium dioxide strip, and the phase transition between metallic and insulating states enables the design of applications such as gradient metasurfaces, vortex beam generators, and reflective lenses with switchable focusing function.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Physics, Multidisciplinary
Wenxin Li et al.
Summary: In this paper, an active tunable terahertz bandwidth absorber based on single-layer graphene is proposed. It shows high absorption and excellent physical regulation in the range of 3.7 THz-8 THz when the Fermi energy (E-f) of graphene is 1.5 eV. The absorber exhibits superior tunability by adjusting physical parameters and E-f, and it is also polarization independent and insensitive to the incident angle.
COMMUNICATIONS IN THEORETICAL PHYSICS
(2023)
Article
Optics
Ruixing Nie et al.
Summary: Reflective meta-atoms based on vanadium dioxide (VO2) are designed to achieve wavefront reconfiguration in terahertz frequency. The meta-atoms provide full phase coverage and high polarization conversion efficiency when VO2 is in the metal state. However, when VO2 undergoes phase transition to the insulating state, the phase coverage and polarization conversion capability decrease significantly. Three metasurfaces, including anomalous reflector, met-alens, and vortex beam generator, demonstrate wavefront manipulation and polarization conversion abilities when VO2 is in the metal state. On the other hand, when VO2 is in the insulating state, the metasurfaces function as specular reflectors. Simulations verify the wavefront modulation and polarization control abilities of the proposed metasurfaces.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Zhibin Ye et al.
Summary: In this research, a simple tunable absorber based on graphene with tunable Fermi level was designed to solve the unadjustability of traditional noble metal absorbers in meeting complex application requirements in the actual electromagnetic environment. The performance of the absorber was theoretically simulated using the finite difference time domain (FDTD) method. The proposed absorber exhibited two perfect absorption peaks with high efficiency in its working band (90-155 μm). The absorber's absorption frequency can be adjusted through controlling the relaxation time and Fermi level of graphene or changing the refractive index of the medium. The proposed absorber has the potential to adapt to different electromagnetic environments and can be flexibly regulated in practical applications, opening up new possibilities for various fields such as detection and communication.
RESULTS IN PHYSICS
(2023)
Article
Chemistry, Physical
Wenxin Li et al.
Summary: In this research, a tunable broadband absorber based on a layered resonant structure was designed, which achieved high absorption (more than 0.9) in the frequency range of 18-28 THz. The high absorption was attributed to strong resonance absorption between the layers and the resonance of the localised surface plasmon. The absorber, consisting of three layers of Dirac semimetal and three layers of optical crystal plates on a gold substrate, also showed tunability and absorption stability.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Zhipeng Zheng et al.
Summary: This study proposes a terahertz metamaterial absorber that combines metamaterial structures and a VO2 film. Flexible switching of absorption performance and an ultra-broadband perfect absorption with a bandwidth of 3.3 THz can be achieved through temperature adjustment. The study also highlights the wide thermal tuning range of spectral absorbance.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Mingming Chen et al.
Summary: In this study, a dynamically switchable electromagnetically induced transparency (EIT) based on metal-graphene hybrid metamaterial is proposed. The EIT effect can be dynamically tuned by manipulating the Fermi level of graphene, offering potential applications in slow light devices and sensors.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Optics
Xiaoju Xue et al.
Summary: Airy beams exhibit unique characteristics, and a switchable all-dielectric metasurface has been proposed to generate efficient transmissive and reflective Airy beams, showing great potential in various fields.
Article
Chemistry, Physical
Xiaoju Xue et al.
Summary: The terahertz absorber based on VO2 designed in this work exhibits tunable and ultra-broadband characteristics, achieving high absorption rates and dynamically modulated amplitudes. By adjusting the conductivity of VO2, the performance of the absorber can be effectively optimized. The ultra-broadband absorber holds great promise in applications such as photochemical energy absorption and stealth devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Optics
Canhui He et al.
Summary: Polarization state of terahertz wave is controlled by changing the Fermi energy level of graphene in this study. Four graphene-based meta-atoms are designed to emit cross-polarized wave with a phase difference of 90 degrees and nearly disappear the wave when adjusted to different Fermi energy levels. Additionally, three dynamic metasurfaces are developed using selected elements to control the wavefront of the reflected beam, combining wavefront control and polarization manipulation successfully.
Article
Materials Science, Multidisciplinary
Zian Li et al.
Summary: This study designed a polarization-insensitive and absorption-tunable ultra-broadband terahertz metamaterial absorber. By analyzing the distribution of electric field and surface current, the mechanism of perfect absorption was explained. After optimizing the structural parameters, an average absorptance of 95.1% in the frequency range of 1.33 to 2.43 THz was achieved.
RESULTS IN PHYSICS
(2022)
Article
Optics
Zekai Zhou et al.
Summary: Gradient metasurface provides a new way for controlling electromagnetic wave by adjusting the wavefront, and graphene-based metasurfaces can dynamically adjust the wavefront of circularly polarized waves in the terahertz band, which is beneficial for improving wireless communication performance.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Qianyi Shangguan et al.
Summary: The paper proposes an ultra-narrow band graphene refractive index sensor with high absorption efficiency, adjustability, and sensitivity, which can be applied to photon detection in the terahertz band and biochemical sensing.
Article
Chemistry, Physical
Zhipeng Zheng et al.
Summary: A novel and structurally simple multifunctional broadband absorber is presented, using the thermogenic phase change properties of vanadium dioxide material to flexibly adjust absorption intensity and achieve near-perfect absorption in an ultra-broadband range.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Manpreet Kaur et al.
Summary: The study presents a super-compact ultra-wideband metamaterial absorber with high absorption and wide absorption bandwidth. The absorption mechanism and practicality are confirmed through analyzing surface current distribution and validating stability under different conditions.
INTERNATIONAL JOURNAL OF MICROWAVE AND WIRELESS TECHNOLOGIES
(2021)
Article
Engineering, Electrical & Electronic
Zohreh Vafapour et al.
Summary: Colon cancer is a common and deadly disease in the United States, with late detection being a major factor in the high number of deaths. Colonoscopies are currently the main method of detection, but they are invasive and time-consuming. A new diagnostic technique using an InSb based device shows promise in differentiating between healthy and cancerous colon tissue based on spectral responses.
IEEE SENSORS JOURNAL
(2021)
Article
Optics
Fang-Zhou Shu et al.
Summary: This study demonstrates electrically tunable broadband polarization states by combining phase-change material (vanadium dioxide) and dispersion-free metasurface for the first time. The polarization states can be continuously tuned through electrically driven phase transition of vanadium dioxide, allowing modulation from horizontal to vertical or from circular to linear polarization. Additionally, a proof-of-concept demonstration for dynamically independent control of multiple polarization display is carried out.
LASER & PHOTONICS REVIEWS
(2021)
Article
Optics
Wenwen Liu et al.
Summary: A bifunctional metamaterial based on a hybrid graphene and vanadium dioxide configuration can switch between beam steering and broadband absorption, depending on the state of VO2. By adjusting the Fermi energy level of graphene and design of the top VO2 square, scattering patterns and absorptance can be controlled, showing potential for applications in terahertz switching and modulation.
Article
Physics, Applied
Mehmet Bagmanci et al.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2019)
Article
Materials Science, Multidisciplinary
Tran Van Huynh et al.
COMPUTATIONAL MATERIALS SCIENCE
(2019)
Article
Nanoscience & Nanotechnology
Wilton J. M. Kort-Kamp et al.
Article
Optics
Xinyan Ling et al.
JOURNAL OF MODERN OPTICS
(2017)
Article
Engineering, Electrical & Electronic
Jianjun Liu
OPTICAL AND QUANTUM ELECTRONICS
(2017)
Article
Chemistry, Physical
Jingyao Tang et al.
Article
Materials Science, Multidisciplinary
Xinyan Ling et al.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2016)
Article
Engineering, Electrical & Electronic
Ben-Xin Wang et al.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2016)
Article
Materials Science, Multidisciplinary
Xu Zhang et al.
OPTICAL MATERIALS EXPRESS
(2016)
Article
Engineering, Electrical & Electronic
Gui-Zhen Wang et al.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2015)
Article
Physics, Applied
Bei-Yin Wang et al.
JOURNAL OF APPLIED PHYSICS
(2014)
Article
Engineering, Electrical & Electronic
S. A. Kuznetsov et al.
PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER
(2012)
Article
Physics, Applied
N. Papasimakis et al.
APPLIED PHYSICS LETTERS
(2009)
Article
Physics, Multidisciplinary
N. I. Landy et al.
PHYSICAL REVIEW LETTERS
(2008)
Article
Physics, Multidisciplinary
DR Smith et al.
PHYSICAL REVIEW LETTERS
(2000)