A5100342341- Metamaterials and Metasurfaces Applications
- Plasmonic and Surface Plasmon Research
- Advanced Antenna and Metasurface Technologies
- Photonic Crystals and Applications
- Photonic Crystal and Fiber Optics
- Optical Coatings and Gratings
- Advanced Fiber Laser Technologies
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced Fiber Optic Sensors
- Orbital Angular Momentum in Optics
- Antenna Design and Analysis
- Near-Field Optical Microscopy
- Optical Systems and Laser Technology
- Perovskite Materials and Applications
- Advanced optical system design
- Strong Light-Matter Interactions
- Photonic and Optical Devices
- Quantum optics and atomic interactions
- Thermal Radiation and Cooling Technologies
- Adaptive optics and wavefront sensing
- Solid State Laser Technologies
- Laser Design and Applications
- Terahertz technology and applications
- ZnO doping and properties
- Laser Material Processing Techniques
Zhejiang University
2023-2025
Shanghai University
2024-2025
Nanjing University
2014-2024
China Electronics Technology Group Corporation
2024
Qingdao University
2018-2023
National Center for Nanoscience and Technology
2016-2023
Chongqing University
2016-2023
Xidian University
2023
Chinese Academy of Sciences
2012-2023
University of Chinese Academy of Sciences
2023
Load-carrying horses, climbing mountain goats, and galloping cheetahs all exhibit impressive locomotion abilities, prompting the development of quadruped robots. Among different types robots, hydraulically actuated robots have been widely concerned with their higher speed limit load-bearing capacity. However, hydraulic usually comprise numerous components high-pressure pipes, posing challenges to design component layout To tackle these problems, this paper proposes a modular method for...
In this Letter, we construct a metamaterial with dual-mode electromagnetically induced transparency (EIT)-like behavior by introducing "bright atoms," "quasi-dark and "dark atoms" simultaneously. The EIT-like has been demonstrated both experimentally theoretically in terahertz (THz) regime. At two modes, slow light is also observed as time-delayed wave packets, the effective group refractive index can reach 10(2). Furthermore, stable verified for wide range of oblique incident angles. Our...
In this paper, a metal-dielectric metamaterial absorber is proposed to achieve ultrabroadband absorption at frequencies from ultraviolet near-infrared. Based on finite element method solutions, the average of 97.75% 382 nm 1100 nm, with maximum 99.92%, resulting multiple resonance coupling. The influences geometric parameters and incident conditions are investigated. Broadband narrowband changes realized by changing light polarization. Polarization-independent properties can be dielectric...
In this letter, we demonstrated <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\beta $ </tex-math></inline-formula> -Ga2O3 lateral Schottky barrier diodes (SBDs) with breakdown voltage (BV) over 10 kV via anode engineering techniques. Post-anode deposition annealing (PAA) was implemented to enhance the height (SBH) minimize leakage current and suppress interface state density (...
In this paper, we theoretically demonstrate that electromagnetic transparency can be induced by optical magnetism in a metamaterial, which is composed of metamolecules. Each metamolecule consists metallic split-ring resonator, as one bright meta-atom (which optically magnetic), and also cut-wire pair, dark nonmagnetic). It found magnetic resonances occur at frequencies due to the local interaction between ``bright'' meta-atoms ``dark'' meta-atoms; thereafter, window emerges upon original...
In this letter, we have proposed a bi-functional switchable broadband polarization converter based on the hybrid graphene-metal metasurface. Turning bias voltage to change Fermi level E f from 0 1.0 eV, metasurface can switch between quarter-wave plate (QWP) and half-wave (HWP) in frequency band 1.38-1.72 THz. Besides, simultaneously works as QWP HWP different range when = eV. addition, is of 0.3 eV-0.6 work frequencies well. The physical mechanism be explained by electric field amplitude...
Optical super-resolution diffractive metalenses have been promising candidates for realizing optical imaging and a microscope beyond the Abbe diffraction limit. An achromatic metalens is particularly important practical applications; however, it remains challenging to achieve high-numerical-aperture subwavelength focusing. Herein, holographic approach of multiwavelength focusing proposed. Through wavefront engineering synthesis, demonstrated at five different wavelengths 520, 555, 632.8,...
Previous studies have demonstrated the utility of microarray expression analysis to identify potential microRNA targets. Nevertheless, technical limitations intrinsic this platform constrain its ability fully exploit assessing transcript level changes explore targetomes. High-throughput multiplexed Illumina-based next-generation sequencing (NGS) provides a digital readout absolute levels and imparts higher accuracy dynamic range than platforms. We used Illumina NGS analyze transcriptome...
In traditional optics, the focal spot size of a conventional lens is restricted to diffraction limit 0.5λ/NA, where λ wavelength in vacuum and NA numerical aperture lens. Recently, various sub-diffraction focusing optical devices have been demonstrated, but they usually short length high aperture. Moreover, always suffer problem huge sidelobes near small field view, especially when less than super-oscillation criteria 0.38λ/NA. To address problem, here, we reported far-field point-focusing...
In this work, we propose a multi-functional broadband terahertz polarization converter based on graphene-VO2 hybrid metamaterial, which can switch between transmissive linear-to-linear conversion and reflective linear-to-circular conversion. The function of the metamaterial be controlled by both temperature Fermi energy graphene. At 298K, converts y-polarized wave into x-polarized in 0.39-1.22THz. meanwhile, changing graphene, converted angle tuned from 90° to 45°. Increasing 358K, incident...
We propose a temperature-tunable and dual-broadband switchable coherent perfect absorber (CPA) composed of an annulus-disk-shaped InSb pattern complementary graphene layer. By controlling the Fermi level graphene, temperature InSb, or relative phase incident beams, working frequency absorption CPA can be continuously adjusted. For energy 0 eV, dual-band absorptivities exceed 99%. The designed structure achieves broadband absorptance over 90% in range 0.145 THz to 1.24 THz, with bandwidth...
This study proposes and demonstrates a high-performance picosecond mid-infrared optical parametric oscillator (OPO) based on harmonic mode-locked erbium-doped fiber laser synchronous pumping. The OPO exhibits unparalleled advantages including compact structure, high repetition rate, excellent stability, signal-to-noise ratio (SNR). output pulse maintains rate of 0.8 GHz while exhibiting highly uniform amplitude SNR 52 dB at 2.3 µm, its cavity length is only 16 cm. signal light wavelength...
Abstract In the past two decades, metamaterials have captivated scientists worldwide due to their unique bandgap characteristics, which been extensively validated through numerous numerical simulations and experiments. This study presents a novel elastic metamaterial designed function under load conditions. The band structure was computed using finite element method (FEM) software, revealing frequency range from 440 Hz 2880 Hz, with relative bandwidth of approximately 1.47. Experimental...
A focusing device is one of the key elements for terahertz applications, including homeland security, medicine, industrial inspection, and other fields. Sub-wavelength tight-focusing waves attractive microscopy spectroscopy. Flat optical lenses based on metasurfaces have shown potential in diffraction-limit advantages ultrathin thickness lightweight large-aperture optics. However previously reported THz metalenses suffered from either polarization-dependency or small numerical aperture (NA),...
Abstract The generation of a sub-diffraction optical hollow ring is great interest in various applications, such as microscopy, tweezers, and nanolithography. Azimuthally polarized light good candidate for creating an structure. Various methods have been proposed theoretically sub-wavelength by focusing azimuthally light, but without experimental demonstrations, especially focusing. Super-oscillation promising approach shaping In this paper, planar diffractive lens proposed, which has...
In this work, we have proposed an actively tunable bi-functional metamirror based on a bi-layer graphene structure. The acts as spin-selective absorber under circularly polarized incidence, which behaves nearly perfect absorption and reflection for right left waves, respectively, leading to giant circular dichroism. On the other hand, it is polarization converter linearly reflects wave into wave. Both can be switched between ON OFF states, with working frequency controlled by voltages...
A crucial point of restricting its development and application is the lack dynamically tunable devices in terahertz fields. In this work, shape memory alloys (SMAs) are innovatively introduced into design THz metamaterials absorber (MMA). An optimized structure proposed, MMA exhibits perfect properties dynamical tuning, polarization insensitivity, dual-band absorption. detail, two discrete resonance peaks can be detected, their corresponding absorbance up to 98.8% at 0.9982 96.8% 1.5328 THz,...
We propose a dual-pattern broadband polarization converter in the terahertz band using vanadium dioxide (VO2) and graphene metasurface. The can be switched between transmission reflection patterns by controlling phase of VO2. In insulating state VO2 with Fermi energy (Ef) set to 1 eV, works mode convert linearly polarized waves. metallic Ef = 0 function as quarter-wave plate. proposed is expected have applications integrated devices that control