A5002191947- Advanced Antenna and Metasurface Technologies
- Metamaterials and Metasurfaces Applications
- Orbital Angular Momentum in Optics
- Supercapacitor Materials and Fabrication
- Electromagnetic wave absorption materials
- Conducting polymers and applications
- Electrospun Nanofibers in Biomedical Applications
- Digital Media Forensic Detection
- Advanced Steganography and Watermarking Techniques
- Antenna Design and Analysis
- Optical Wireless Communication Technologies
- Advanced Multi-Objective Optimization Algorithms
- Underwater Vehicles and Communication Systems
- Photonic and Optical Devices
- Adaptive optics and wavefront sensing
- Biometric Identification and Security
- Plasmonic and Surface Plasmon Research
- Electrochemical sensors and biosensors
- Turbomachinery Performance and Optimization
- Robotic Path Planning Algorithms
- Advanced Computing and Algorithms
- Microwave Engineering and Waveguides
- Adaptive Control of Nonlinear Systems
- MXene and MAX Phase Materials
- Advanced Aircraft Design and Technologies
Air Force Engineering University
2011-2024
Northwestern Polytechnical University
2018-2023
China Aerodynamics Research and Development Center
2023
Hebei University of Science and Technology
2022
Lightweight absorption-dominated electromagnetic interference (EMI) shielding materials are more attractive than conventional reflection-dominated counterparts because they minimize the twice pollution of reflected (EM) wave. Here, porous Ti2CTx MXene/poly(vinyl alcohol) composite foams constructed by few-layered (f-Ti2CTx) MXene and poly(vinyl (PVA) fabricated via a facile freeze-drying method. As superior EMI materials, their calculated specific effectiveness reaches up to 5136 dB cm2 g–1...
Two-dimensional (2D) few-layered Ti3C2TX MXene (f-Ti3C2TX) has been proved to be one of the most promising electromagnetic interference (EMI) materials, but its (EM) absorption properties and loss mechanism have not studied so far. Herein, for first time, ordered lamellar f-Ti3C2TX/SiCnws hybrid foams with ultralow density are synthesized by a combination self-assembly bidirectional freezing processes. The freestanding exhibit excellent EM superior current foam-based counterparts. effective...
This paper presents a study on controlling the out-of-water motion of amphibious multi-rotor UAVs using cascade control method based Active Disturbance Rejection Control (ADRC) algorithm. The aim is to overcome challenges time-varying model parameters and complex external disturbances. research involves developing an underwater dynamic analyzing hydrodynamic forces calculate theoretical inertial simulate viscous forces. establishes relationship between exit velocity. A complete air then...
Three-dimensional chiral materials with intrinsic chirality play a crucial role in achieving strong response and flexible light manipulation. Reconfigurable through the 3D morphological transformation of is significant for greater freedom tailoring but remains challenge. Inspired by unique memory capability shape alloys (SMAs), we demonstrate discuss resonator microwave regime that can realize reconfigurable transformation. The introduction heating film realizes voltage control SMA’s...
Abstract Vortex beams carrying orbital angular momentum (OAM) are considered to hold significant prospects in fields such as super-resolution imaging, high-capacity communications, and quantum optics. Therefore, the techniques of vortex beam generation have attracted extensive studies, which development metasurfaces brings new vigor vitality it. However, reconfigurable by at incidence arbitrary polarized electromagnetic (EM) waves holds challenges. In this study, an efficient strategy...
This paper considers optimizing the performance of high-temperature combustion chamber an aero-engine based on a concentric and hierarchical model. First, sample data for design variables are obtained Latin hypercube sampling method, one-dimensional program is used to obtain true values efficiency total pressure loss corresponding each group variables. The then pre-processed establish dataset. Second, multi-layer artificial neural network (ANN) architecture designed surrogate model...
Few-layer Ti3C2Tx was prepared in high yield by a solvothermal intercalation and exfoliation method. Due to the abundant oxygen-containing functional groups on surface present after reaction, polyaniline (PANI) nanorods were loaded sheets situ polymerization obtain Ti3C2Tx/PANI composite electrode material. Benefiting from tight molecular binding fast ion transport channels, material exhibited excellent capacitor properties with specific capacity of 508 F g−1 at 1 A an energy density 8.93 Wh kg−1.
A planar circularly polarized (CP) array antenna based on polarization conversion electromagnetic band-gap (PCEBG) and sequential phase (SP) feed network with wideband circular low radar cross section (RCS) is presented. The formed by 2 × PCEBG elements. CP performance obtained due to the PCEBG, SP contributes wide bandwidth symmetric radiation pattern. proposed antenna, an overall size of 64 mm 2.008 (1.6 λ0 1.6 0.05 at 7.5 GHz) has been fabricated measured. measured results are as follows,...
The match between the orbital angular momentum (OAM) transmission and receipt is a prerequisite for vortex beams as carrier of wireless optical communication system in free space. However, splitting induced by atmospheric turbulence results an offset average OAM measured after propagating over space link. Therefore, how to reduce effect improve stability propagation studied this paper. First, new parameter (m) introduced modulate radial distribution polarization state autofocusing Airy...
How efficiently generating a multi-mode vortex beam is the key to new system of wireless communication technology based on orbital angular momentum. Due advantages simple structure and flexible tunability metasurface, in recent years, people have been devoted dynamic momentum more simply using programmable metasurfaces. To address current problem single number modes for beams from reflective metasurface has designed realize function dynamically tunable beams. By loading two varactor diodes...
The circular dichroism resonator (CDR) can produce spin selective absorption for left-handed circularly polarized (LCP) and right-handed (RCP) waves. However, in the microwave band, previously proposed CDRs only absorb designated CP waves lack versatility practical applications. Here, we propose a switchable CDR based on pair of PIN diodes. It switches between left-hand right-hand modes through alternate ON-OFF two absorbs LCP converts RCP into opposite is true CDR. thickness one-tenth...