A5101495494- Advanced Antenna and Metasurface Technologies
- Metamaterials and Metasurfaces Applications
- Antenna Design and Analysis
- IPv6, Mobility, Handover, Networks, Security
- Acoustic Wave Resonator Technologies
- Image Processing Techniques and Applications
- Microwave Engineering and Waveguides
- Microwave Imaging and Scattering Analysis
- Geophysical Methods and Applications
- Advanced Fluorescence Microscopy Techniques
- Ultrasonics and Acoustic Wave Propagation
- Advanced Materials and Mechanics
- Network Traffic and Congestion Control
- Advanced MEMS and NEMS Technologies
- Semiconductor materials and interfaces
- Innovations in Concrete and Construction Materials
- Advanced Machining and Optimization Techniques
- Optical Coherence Tomography Applications
- Thermal Radiation and Cooling Technologies
- Advanced Authentication Protocols Security
- Wireless Networks and Protocols
- UAV Applications and Optimization
- Phase Equilibria and Thermodynamics
- Advanced SAR Imaging Techniques
- Photopolymerization techniques and applications
Chongqing University of Posts and Telecommunications
2021-2024
Nanchang Hangkong University
2022
University of Electronic Science and Technology of China
2003-2021
Wuhan Ship Development & Design Institute
2021
National Engineering Research Center of Electromagnetic Radiation Control Materials
2018-2021
Taiyuan Heavy Industry (China)
2021
NARI Group (China)
2020
Foxconn (China)
2019
China Electronics Technology Group Corporation
2019
University of Maryland, College Park
2018
A new double-taper microfiber Mach-Zehnder interferometer (MZI) biosensor is applied for <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Staphylococcus aureus</i> ( xmlns:xlink="http://www.w3.org/1999/xlink">S. ) detection. The MZI structure fabricated by creating two tapers along a traditional single mode fiber (SMF) firstly and tapering the SMF sandwiched between into very small diameter (in order of micrometers). measured refractive index...
We propose a radar-infrared bi-stealth rasorber that not only provides broad microwave absorptivity and low infrared emissivity but also possesses transmission window at frequency. It is composed of three functional layers, which are carefully designed to independently control the emission, absorption, transmission, respectively. The structure exhibits broadband (8.1–19.3 GHz) high-efficiency (>90%) absorption. A appears frequency with peak 80% 2.68 GHz. thermal about 0.27 in atmosphere...
High-temperature-resistant coatings with low infrared emissivity were prepared using polysiloxane resin and flake aluminum as the adhesive pigment, respectively. The heat resistance mechanisms of polysiloxane/Al coating systematically investigated. composition, surface morphology, reflectance spectra, thermal expansion dimension (ΔL) characterized by X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FE-SEM), Fourier transform spectroscopy, mechanical...
The microwave backscattering of the sea surface is investigated with wedge-shaped breaking waves for super events at low grazing angles (LGA).According to relationship between wave and whitecap, finite three-dimensional wedges are utilized approximately model waves, which spatial distribution simulated whitecap coverage.The phasemodified two-scale method (TSM) equivalent currents (MEC) used calculate volume scattering respectively.The spikes in LGA observed by this model, strong...
The swarm operation of unmanned marine vehicle (UMV) has been developed and evolved from concept to practical application. In view the mission requirements UMV swarms, this paper summarizes development concepts aerial (UAV), surface (USV) underwater (UUV), cross-domain operations in naval warfare. It then analyzes key technologies cooperative engagement, including self-organizing communication, collaborative situational awareness, tasking, path planning, formation control virtual testing....
Abstract Taking the concept of service-oriented design as concept, paper designs digital platform architecture based on integrated application ideas and technical methods IFC standard three-dimensional geospatial engineering cost information platform, builds a 3DGIS+BIM power B/S network architecture. platform. Combined with value BIM technology in field cost, applicability management transmission transformation is first analysed; then studied layer by from aspects graphical calculation,...
The investigation of how to control themicrowave scattering from strong sources has vital applications in military and civilian areas. As a typical target, right-angle dihedral corner reflector been extensively investigated because its electromagnetic over wide observation angle range. In this letter, with three loading conditions the camouflage grass described our previous is discussed investigate radar cross-section (RCS) reduction effect for target. For different RCS effects conditions,...
In this work, the complex electromagnetic model of a camouflage grass was accurately generated in geometry, which leaves were represented by lathy curved rectangular metal surfaces. To investigate scattering characteristics radar band, its cross section (RCS) from 4 GHz to 18 calculated multilevel fast multipole method (MLFMM). For validation, sample manufactured and measured. A relatively good agreement observed between results calculation measurement. Based on modeling method, with...
A novel design approach for dual-polarized 2-bit reconfigurable reflectarray element is proposed. The transmission phase shifter designed using a single-layer Jerusalem cross loaded with four PIN diodes. By spatially cascading it 1-bit reflective Malta integrated 2 diodes, resolution achieved by switching these six simulated results show that the proposed has good performance at states, where average insertion loss 2.2 dB 5.8 GHz. Compared conventional multi-bit design, method advantages on...
The quality of through-wall-radar building layout image is affected seriously by the grating lobes when element spacing array bigger than half a wavelength. Moreover, defocusing caused unknown wall penetration makes problem worse. Based on opposite characteristics low-frequency phase change area and high-frequency area, in this paper, low-pass spatial filter designed properly to reduce lobes. simulation results demonstrate frequency characteristic experiment validate feasibility suppressing
Community search over heterogeneous information networks has been applied to wide domains, such as activity organization and team formation. From these scenarios, the members of a group with same treatment often have different levels workloads, which causes unfairness in between active inactive (called individual unfairness). However, existing works do not pay attention fairness sufficiently consider rich semantics HINs (e.g., high-order structure), disables complex queries. To fill gap, we...
Due to the molding-free property and dry shrinkage of extrusion-based three-dimensional printable concrete (3DPC), precision issues 3DPC have not been solved effectively. One viable solutions for improvement is print using ultra-thin filaments. The challenges ultra-thin-filament printing are extrudability, flowability, fast solidification. To overcome these enhance precision, a customized 3D printer with an diameter nozzle (6 mm) fully sealed extrusion system was developed, mix design...
We integrate infrared-to-visible upconverting nanoparticles with an asymmetric dielectric metasurface to enhance their upconversion efficiency. An enhancement of up ~100 times is achieved. also demonstrate imaging using fabricated devices.
In through-wall-radar imaging (TWRI), this paper presents a fast wall compensation algorithm to deal with the problem of image defocusing and displacement target behind multiple parallel equivalent walls in case known parameters including thickness relative permittivity. Based on Snell law, we combine these into virtual by translating second edge first but keep focusing delay same. Therefore, instead searching for refraction points surfaces actual walls, just need find point surface...
Langasite with Euler angle of (0°, 22°, 30°) was regarded as suitable substrate for high temperature pressure sensor in previous research. Nevertheless, the spurious modes on this cut restrict its performance. In order to suppress modes, two different structures, a triple-electrodes one and grooved one, are proposed. Simulation results utilized evaluate optimize constructions. The modifies distribution acoustic field. With well designed parameters, can be suppressed electrically. While...
This paper analyzes the advantages and disadvantages of existing 3GPP WLAN-4G converged network access authentication protocol EAP-AKA. Aiming at design power private network, this introduces WAPI certificate mechanism designs an WEAP. The proposed WLAN4G interconnection structure model in solve problem unified for WLAN terminals a networking environment. Analysis simulation results show that compared with original protocol, WAPI-XG1, has higher security execution efficiency.
Deposition of SiO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> cladding layer is adopted as an option to promote the high temperature performance LGS based applications. Besides improving stability electrode, also protects substrate and provides indirect bonding possibility. By means a weak form nonlinear FEM simulation, we get thorough understanding influences brings. With layer, electromechanical coupling factor (K2) decreases wave...
A method based on the particle swarm optimization (PSO) algorithm is presented to design quasi-two-dimensional (Q2D) materials. With this development, various single-layer and bi-layer materials in C, Si, Ge, Sn, Pb were predicted. new Si structure found have a much-favored energy than previously widely accepted configuration. Both small band gaps, limiting their usages optoelectronic applications. Hydrogenation has therefore been used tune electronic optical properties of layers. We...