A5025265931- Advanced Antenna and Metasurface Technologies
- Metamaterials and Metasurfaces Applications
- Antenna Design and Analysis
- Laser-Plasma Interactions and Diagnostics
- Nuclear Physics and Applications
- Laser Design and Applications
- Liquid Crystal Research Advancements
- Semantic Web and Ontologies
- Microwave Engineering and Waveguides
- Engineering and Test Systems
- Business Process Modeling and Analysis
- Semiconductor Lasers and Optical Devices
- Water Treatment and Disinfection
- Advanced X-ray Imaging Techniques
- Fuel Cells and Related Materials
- Access Control and Trust
- Advanced Radiotherapy Techniques
- Advanced Frequency and Time Standards
- Lignin and Wood Chemistry
- Cardiac Ischemia and Reperfusion
- Groundwater and Isotope Geochemistry
- Laser-Matter Interactions and Applications
- Radiation Therapy and Dosimetry
- Advanced Materials and Mechanics
- Concrete and Cement Materials Research
China Mobile (China)
2025
China Academy of Space Technology
2018-2024
Peking University
2022-2024
State Key Laboratory of Nuclear Physics and Technology
2022-2024
China Three Gorges University
2023-2024
Harbin Institute of Technology
2019-2023
Shenzhen Polytechnic
2022-2023
Wuhan Institute of Physics and Mathematics
2018
University of Chinese Academy of Sciences
2018
Army Medical University
2017
In this paper, a design method for tunable liquid crystal (LC)-based metamaterial absorber (MMA) with the compact unit cell and wideband absorption is proposed. A LC-based MMA dimension of 0.204 λ × designed based on method, full-wave numerical simulations experiments are conducted to demonstrate its performance. Results show that central frequency tuned from 11.04 10.21 GHz as bias voltage increases null saturation, tuning range reaches up 7.8%. The exhibits arbitrary states. Moreover,...
Abstract In this paper, a design method for tunable liquid crystal (LC)-based frequency selective surface (FSS) with the compact unit cell, large tuning range, and passband of flat-top sharp roll-off is proposed. A very LC-based bandpass FSS cell dimension 0.077 λ × designed based on pair planar vortex-shaped metallic structure two parallel patches, between which LC sandwiched. Results show that central tuned from 11.56 to 12.58 GHz, range reaches up 8.5%. order obtain transmission...
In this paper, a systematic design method for polarization-insensitive tunable liquid crystal (LC)-based metamaterial filter with the passband of flat-top and sharp roll-off is proposed. A compact LC-based bandpass unit cell dimension 0.09 λ × designed. The element consists pair planar pinwheel-shaped metallic structures four symmetrically distributed isosceles triangular patches. LC sandwiched in structures. metal pattern on each layer 90° rotationally symmetrical leading that insensitive...
Abstract In this paper, a systematic design method for tunable metasurface based on liquid crystal (LC) is proposed, which exhibits the property of polarization selection. A compact LC-based meta-atom with dimension 0.12 λ × designed. The element consists pair planar metallic structures, between LC sandwiched. equivalent circuit, electric field distribution, and current distribution elaborate operating principle in detail. Full wave simulations show that provides bandpass bandstop...
In this work, a low-cost all-metal metamaterial near-field lens based on laser cutting technology is proposed. A novel spiral-slot structure proposed to achieve miniaturized unit cells with an adjustable 360-degree phase shift at length smaller than 0.2 times the operating wavelength. Since entirely constructed of stainless steel, it resistant high temperatures and pressures compared existing results. Moreover, four-layer used increase transmission coefficient. The final L-band 20 × units....
In this paper, a novel design approach for microwave tunable balanced phase shifters with the common-mode (CM) suppression is proposed based on liquid crystal (LC) technology. The shifter (LCPS) designed by LC-based microstrip differential line periodical T-shaped stubs, which supports spoof surface plasmon polaritons (SSPP) mode. Thanks to slow-wave characteristic induced SSPP mode, both shifts and figure of merit (FoM) LCPS are effectively enhanced. addition, defected ground structure...
The near-field convergent lens has aroused wide attention in the field of microwave passive imaging, medicine, and beam shaping recent years as it can converge electromagnetic energy with high efficiency. main objective paper is to exhibit design process a multiple-conductor-layers using all-metallic elements. A quad-layer metal cross-Jerusalem-slot structure proposed obtain compact unit cells without dielectric substrate, then an based on constructed. To validate method, L-band sample 20 ×...
In this paper, a new co-design approach for bifunctional band-stop filtering tunable phase shifter is proposed. The microwave component consists of liquid crystal (LCPS) and filter. It can simultaneously achieve shift self-embedded functions. Particularly, LCPS designed by LC loaded coplanar waveguide (CPW), which magnetically coupled with series split-ring resonators (SRRs). case, when the LC's permittivity tuned external bias magnetic field, both continuously LC-CPW constant function...
Chronic obstructive lesions of the subclavian artery (SCA) often result in steal syndrome, which leads to arm claudication, transient cerebral ischemia, and other serious complications. The are classified as stenosis occlusion, according degree obstruction. Unlike totally occlusive lesions, including ostial occlusions, stenotic have an excellent technical success rate. In present study, occlusions were into 4 types their angiographic appearance. A total 8 patients (6 male, 2 female) with SCA...
Epichlorohydrin (ECH) is toxic to humans via multiple routes and a potential carcinogen. The accurate measurement of ECH at trace level (<0.1 μg/L) still an obstacle hindering the monitoring regulation municipal water systems. In this study, improved headspace solid-phase microextraction (HS-SPME) procedure developed optimized extract enrich with high sensitivity, accuracy, precision. A total 17.4-time enhancement in extraction efficiency achieved compared default condition. Specifically,...
In this study, the significance of oxidized low-density lipoprotein (ox-LDL) in promoting progression atherosclerosis was investigated by inducing differentiation macrophages into M2 subtype within a high-fat diet-induced ApoE -/- mouse model. The study also evaluated effects β2-AR agonists and blockers on process. Ox-LDL found to have significantly promoted type induced related functional alterations. Furthermore, it activated pyroptosis pathway encouraged release lactate dehydrogenase....
Isomers, ubiquitous populations of relatively long-lived nuclear excited states, play a crucial role in physics. However, isomers with half-life times several seconds or less barely had experimental cross section data due to the lack suitable measuring method. We report method online {\gamma} spectroscopy for ultra-short-lived from photonuclear reactions using laser-driven ultra-intense {\gamma}-rays. The fastest time resolution can reach sub-ps level {\gamma}-ray intensities >10^{19}/s...
In the vacuum thermal test of communication satellites, waveguide are often used to establish satellite uplink or downlink links. As satellites become more and complex, use also increases. Before is used, electrical performance needs be tested. The measurement parameters mainly standing wave ratio insertion loss. order meet work different types frequency bands, improve efficiency. Based on LabVIEW integrated development environment, this paper establishes data between microwave network...
Large language models have achieved notable success across various domains, yet efficient inference is still limited by the quadratic computation complexity of attention mechanism. The consists prefilling and decoding phases. Although several attempts been made to accelerate decoding, inefficiency phase, especially for long-context tasks, remains a challenge. In this paper, we observe locality in query criticality during phase processing: adjacent tokens tend focus on similar subsets past...
DC-SRF-II gun, a high-brightness continuous-wave photocathode has greater potential in electron beam irradiation applications. This paper presents the in-vacuum and in-air dosimetry study of high repetition rate from gun with both Monte Carlo simulations experiments. Especially, high-dose uniform irradiations flexible accurate tuning dose across orders magnitude are demonstrated. Good stability repeatability doses also shown. The ultra-wide range precise control time expected to pave way for...