A5066186251- Terahertz technology and applications
- Microwave Engineering and Waveguides
- Gyrotron and Vacuum Electronics Research
- Plasmonic and Surface Plasmon Research
- Metamaterials and Metasurfaces Applications
- Photonic and Optical Devices
- Spectroscopy and Laser Applications
- Particle accelerators and beam dynamics
- Advanced Antenna and Metasurface Technologies
- Antenna Design and Analysis
- Photonic Crystals and Applications
- Spectroscopy and Quantum Chemical Studies
- Millimeter-Wave Propagation and Modeling
- Pulsed Power Technology Applications
- Microbial Inactivation Methods
- Superconducting and THz Device Technology
- Electromagnetic Simulation and Numerical Methods
- Radio Frequency Integrated Circuit Design
- Graphene research and applications
- Advanced Chemical Sensor Technologies
- Magnetic confinement fusion research
- Optical Coatings and Gratings
- Microwave and Dielectric Measurement Techniques
- Particle Accelerators and Free-Electron Lasers
- Plant and animal studies
University of Electronic Science and Technology of China
2016-2025
Nanjing Agricultural University
2025
Southeast University
2012-2023
Huzhou University
2023
Ministry of Education of the People's Republic of China
2018-2021
Chongqing University of Arts and Sciences
2021
Beihang University
2020
China Academy of Launch Vehicle Technology
2020
Anhui Normal University
2019
Wuhan University of Science and Technology
2018
Computer-aided highly efficient electromagnetic particle-in-cell (PIC) (CHIPIC) code, developed at the University of Electronic Science and Technology China, is a fully computer-aided code which combines modeling, calculations, analysis with an integrated environment. CHIPIC specifically designed for modeling simulation. includes design (CAD) system physical kernel. The CAD based on common flowchart PIC simulation to provide analysis, kernel fast accurate calculations. can run single...
Terahertz (THz) molecular fingerprint sensing provides a powerful label-free tool for the detection of trace-amount samples. Due to weak light–matter interaction, various metallic or dielectric metasurfaces have been adopted enhance absorbance signals. However, they suffer from strong background damping complicated sample coating on patterned surfaces. Here, we propose an inverted metagrating and broadband THz trace analytes planar surface. Enhancement signal originates effects evanescent...
We theoretically and experimentally demonstrate a label-free terahertz biosensor with ultrahigh sensitivity distinctive discretion. By constructing metal-air-metal (MAM) metamaterial perfect absorber (MPA) metallic paired-ring resonator array, hollow microfluidic channel, backed reflector, novel dual-band absorptive sensing platform is proposed in the THz range. The near field coupling by dipole-induced trapped modes magnetic momentum caused vertical to transverse power flux that...
Terahertz (THz) sensing of molecular fingerprint enables wide applications in biomedicine and security detection. Conventional detection approaches face big barriers trace analysis analyte due to the difficulties enhancing broadband absorption. In order achieve strong wave–matter interaction for analyte, we propose a method based on THz wave angular scanning dielectric metagrating. virtue guided-mode resonance, one can strengthen local electric field various trace-amount analytes by tuning...
Dielectric metasurfaces typically have much lower terahertz (THz) optical losses than metallic and attracted great attention in boosting trace sensing of THz molecular fingerprints. Previous studies usually neglect the dielectric materials their ideal physical models, lack experimental validation. Despite low extinction coefficient metastructures, cannot be neglected practice, especially when thicknesses are larger those samples. This would hinder retrieval In this work, we fabricate...
Abstract Refractive index sensing is attracting extensive interest. Limited by the weak light–matter interaction and broad bandwidth of resonance, figure merit (FoM) terahertz (THz) sensors much lower than their counterparts in visible infrared regions. Here, these two issues are addressed incorporating a microfluidic channel as slot layer into grating waveguide (GSW), where guided‐mode resonance results narrowband resonant peak sensitivity increases remarkably due to greatly concentrated...
Terahertz waves have found wide applications in the biological and medical areas. Since water is one of most important ingredients systems, it necessary to investigate its optical dielectric properties terahertz range. These fundamental physical parameters play an role many applications, such as imaging hyperthermia are temperature dependent. In order shed more light on property dependence, we performed a systematic investigation by changing sample using time-domain spectrometer. The...
Autonomous navigation in agricultural environments requires precise obstacle classification to ensure collision-free movement. This study proposes a convolutional neural network (CNN)-based model designed enhance for robots, particularly orchards. Building upon previously developed YOLOv8n-based real-time detection system, the incorporates Ghost Modules and Squeeze-and-Excitation (SE) blocks feature extraction while maintaining computational efficiency. Obstacles are categorized as...
Graphene-based silica fiber-optic sensors, with high sensitivity, fast response, and low cost, have shown great promise for gas sensing applications. In this letter, by covering a monolayer of p-doped graphene on D-shaped microstructured polymer fiber Bragg grating (FBG), we propose demonstrate novel biochemical probe sensor, the graphene-based FBG (GDPFBG). Due to surface evanescent field enhancement, sensor shows sensitivity detect surrounding parameters. By monitoring peak locations...
Cracks and crack propagation in cement-based materials are key factors leading to failure of structures, affecting safety construction engineering. This work investigated the application terahertz (THz) non-destructive imaging inspections on structures materials, so as explore potential THz detection. Two kinds disk specimens made plain cement mortar UHMWPE fiber concrete were prepared respectively. A mechanical expansion load device was deployed generate cracks control whole process...
With the rapid development of millimeter wave technology, it is a fundamental requirement to understand permittivity materials in this frequency range. This paper describes dielectric measurement undoped silicon E-band (60–90 GHz) using free-space quasi-optical system. system capable creating local plane wave, which desirable for Details design and performance are presented. The principle retrieval process described incorporating theories propagation scattering parameters. Measured results...
A polarization-insensitive broadband terahertz absorber based on single-layer graphene metasurface has been designed and simulated, in which the is composed of isolated circular patches. After simulation optimization, absorption bandwidth this with more than 90% absorptance up to 2 THz. The results demonstrate that can be achieved by combining localized surface plasmon (LSP) resonances patches caused coupling between them. changed changing chemical potential structural parameters. Due...
Up to date, reconfigurable terahertz (THz) band-pass filters based on the design of metamaterials with vanadium dioxide (VO2) have been investigated extensively. However, VO2-based THz high-quality tunable narrowband transmission and good stop-band rejection yet be reported, which are essential for wave filtering components or systems. Here, we propose a filter in combination dielectric metastructure VO2 thin film. Utilizing optical tunneling effects cavity layer, has high up 98% at 0.246...
Abstract Microsecond pulsed electric fields (PEF) have previously been used for various tumour therapies, such as gene therapy, electrochemotherapy and irreversible electroporation (IRE), due to its demonstrated ability. However, recently nanosecond (nsPEF) also a potential tumor therapy via inducing cell apoptosis or immunogenic death prevent recurrence metastasis by interacting with intracellular organelles. A large proportion of the existing in-vitro studies nsPEF on cells suggests...
The concept and experimental results of a light source given in recent paper by Adamo et al. [Phys. Rev. Lett. 103, 113901 (2009)] are very interesting attractive. Our presents detailed theoretical investigations on such source, our confirm that the mechanism radiation experimentally detected published is special kind diffraction waveguide with nanoscale periodic structure excited an electron beam. numerical calculations based theory digital simulations agree well results. This significance...
We have theoretically investigated the electromagnetic radiation excited by a charged particle moving along semi-infinite space filled with double-negative metamaterial (DNM). Cherenkov in region exhibits reversed or backward behavior. The spectral density of has continuous distribution over frequency region. influence some important parameters on energy per unit length been discussed. surface wave vacuum presented here also is investigated. conclude that amplitude greatly enhanced normal...
The particle-in-cell-Monte Carlo collision method has been widely used in simulation studies of ion thrusters. Due to the huge computational demand such simulations, numerical acceleration techniques are required. However, effects on results not clear. In this study, three investigated using a series simulations that implement different factors. resulting plasma potentials, density distributions, and currents discharge chamber compared for accelerated by increasing vacuum permittivity,...
A practical two-dimensional beam steering solid-state system based on the synthesis of one-dimensional wavelength tuning and a optical phased array is demonstrated investigated. The incorporates an integrated multiple-channel-interference widely tunable laser, 32-channel array, offline phase error correction unit, home-made control electronics. introduction laser avoids traditional bulky light source fed into making architecture promising to be miniaturized. In addition, calibration method...
Abstract In this paper we show that under the excitation of a line current electron beam, dielectric medium loading in lower half-space sub-wavelength hole array brings essential changes to diffraction radiation. half-space, surface wave becomes radiation wave. The fundamental space harmonic is transformed into Cherenkov with unique characteristics and first negative converted angle Smith–Purcell Consequently, interference happens due these two kinds results numerical calculations based on...