A5100461952- Antenna Design and Optimization
- Direction-of-Arrival Estimation Techniques
- Radar Systems and Signal Processing
- Antenna Design and Analysis
- Advanced SAR Imaging Techniques
- Microwave Engineering and Waveguides
- Stochastic processes and financial applications
- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Stochastic processes and statistical mechanics
- Grey System Theory Applications
- Magnetism in coordination complexes
- Electronic and Structural Properties of Oxides
- Magnetic and transport properties of perovskites and related materials
- Speech and Audio Processing
- Diverse Aspects of Tourism Research
- Advanced MIMO Systems Optimization
- Lanthanide and Transition Metal Complexes
- Millimeter-Wave Propagation and Modeling
- Target Tracking and Data Fusion in Sensor Networks
- Advanced battery technologies research
- Indoor and Outdoor Localization Technologies
- Metal-Organic Frameworks: Synthesis and Applications
- Advanced Antenna and Metasurface Technologies
University of Electronic Science and Technology of China
2016-2025
Tianjin University
2014-2024
Jiangsu University of Science and Technology
2024
South China Agricultural University
2023-2024
Sun Yat-sen University
2024
Ningbo University of Technology
2011-2024
Chinese Academy of Social Sciences
2024
University of Chinese Academy of Social Sciences
2024
Shenzhen University
2024
Yellow River Conservancy Technical Institute
2024
It is available to constrain and tune the coordination geometries around lanthanide ions in metal–organic frameworks (MOFs) for study of single-molecule-magnet (SMM) behavior. A series DyIII-MOFs are synthesized via a solvothermal method by using furan-2,5-dicarboxylic acid (H2FDA) as ligand. {[Dy2(FDA)3(DMF)2]·1.5DMF}n (1) [Dy2(FDA)3(DMF)2(CH3OH)]n (2) show similar three-dimensional structures, but dysprosium(III) 1 2 exhibit different deviations from ideal square antiprism (D4d symmetry)...
Two-dimensional electron gases (2DEGs) at oxide interfaces, which provide unique playgrounds for emergent phenomena, have attracted increasing attention in recent years. While most of the previous works focused on 2DEGs LaAlO_{3}/SrTiO_{3} here we report a new kind formed between magnetic insulator EuO and high-k perovskite KTaO_{3}. The are not only highly conducting, with maximal Hall mobility 111.6 cm^{2}/V s 2 K, but also well spin polarized, showing strongly hysteretic magnetoresistance...
Two-dimensional electron gas (2DEG) at the perovskite oxide interface exhibits a lot of exotic properties, presenting promising platform for exploration emergent phenomena. While most previous works focused on SrTiO3-based 2DEG, here we report fabrication high-quality 2DEGs by growing an amorphous LaAlO3 layer (001)-orientated KTaO3 substrate, which is 5d metal with polar surface, high temperature that usually adopted crystalline LaAlO3. Metallic Hall mobility as ∼2150 cm2/(V s) and sheet...
This paper presents a novel accurate array response control algorithm, abbreviated as A <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> RC, and its application to pattern synthesis. The proposed RC algorithm deals with the problem of how accurately at given direction. Starting from adaptive theory, deep analysis optimal weight vector is carried out. It found that normalized direction can be adjusted an arbitrary level, by means making...
Controlling electronic processes in low-dimension electron systems is centrally important for both fundamental and applied researches. While most of the previous works focused on SrTiO3-based two-dimensional gases (2DEGs), here we report a comprehensive investigation this regard amorphous-LaAlO3/KTaO3 2DEGs with Fermi energy ranging from ∼13 meV to ∼488 meV. The observation dramatic variation Rashba spin–orbit coupling (SOC) as sweeps through 313 meV: SOC effective field first jumps then...
Abstract Increasing both the energy barrier for magnetization reversal and coercive field of hysteresis loop are significant challenges in single‐molecule magnets (SMMs). Coordination geometries lanthanide ions magnetic interactions between important guiding behavior SMMs. We report a high 657 K (457 cm −1 ) diamagnetic‐ion‐diluted chain compound with constrained bisphenoid symmetry ( D 2 d ); this is substantially higher than 567 (394 non‐diluted intrachain ferromagnetic interactions....
Li-CO2 batteries are widely studied as a promising technology for greenhouse-gas CO2 fixation well energy conversion and storage devices. Their further development, however, is hindered by the refractory discharge products, leading to large polarization voltage low round-trip efficiency. Here, W2C nanoparticles embedded in walls of carbon nanotubes (W2C-CNTs) prepared successfully. An efficient battery with W2C-CNTs cathode displays ultralow charge (3.2 V) high efficiency (90.1%). The comes...
Lithium sulfide (Li2S) is a critical material for two systems of next-generation advanced lithium batteries. However, its practical applications are seriously impeded by expensive price due to troublesome storage and problematic production. Herein we report the synthesis Li2S thermally reducing sulfate with hydrogen. Compared industrial approach carbothermal reduction, this new method using gaseous reductant advantageous because emitting zero amount carbon oxides, having no solid byproducts...
This paper presents a new scheme based on Weight vector ORthogonal Decomposition (WORD) to control the array response at given direction and novel WORD-based approach pattern synthesis for arbitrary arrays. The central concept of proposed methods stems from adaptive theory. More precisely, it is found that inverse noise-plus-interference covariance matrix in beamforming can be regarded as linear combination two orthogonal projection matrices, and, accordingly, optimal weight vectors. With...
As an important method for crop phenotype quantification, three-dimensional (3D) reconstruction is of critical importance exploring the phenotypic characteristics crops. In this study, maize seedlings were subjected to 3D based on imaging technology, and their characters analyzed. first stage, a multi-view image sequence was acquired via RGB camera video frame extraction method, followed by structure from motion algorithm. Next, original point cloud data preprocessed through Euclidean...
In this paper, the problem of pattern synthesis with antenna arrays is addressed, and new approaches based on recently developed accurate array response control (A <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> RC) algorithm are presented. It shown that weight vector obtained by A RC to normalized at a single direction in each step belongs specific set. Thus, an appropriate chosen from intersection sets corresponding desired responses...
In this paper, the problem of how to optimally and precisely control array response levels is addressed. By using concept optimal weight vector from adaptive theory adding virtual interferences one by one, change rule found a new formulation update thus devised. Then, issue level single direction investigated. More specifically, we assign interference such that can be controlled. Moreover, parameters, as interference-to-noise ratio, figured out according desired level. Additionally,...
This letter proposes a new approach for knowledge-aided estimation of structured clutter covariance matrices (CCMs) in airborne radar systems with limited training data. First, we model the CCM space-time adaptive processing (STAP) as sum low-rank Kronecker products. We then apply permutation operation to convert factors into linear structures and propose novel method under maximum-likelihood framework. Employing proximal gradient algorithm, proposed simultaneously exploits knowledge about...
This paper presents a new method to synthesize high-performance beampatterns, with the aid of linear fractional semidefinite relaxation (LFSDR) technique and quasi-convex optimization approach. We consider two beampattern synthesis problems. The first one is how determine weight vector maximize array gain (or equivalently, minimize loss in mainlobe), under condition that amplitude response satisfies specific requirements. second notch level at given region, on premise permissible mainlobe....
This paper presents a flexible array response control algorithm via oblique projection, abbreviated as FARCOP, and its application to pattern synthesis. The proposed FARCOP stems from the adaptive theory, it can flexibly, precisely simultaneously adjust levels at multiple angles based on an arbitrarily given weight vector. Different existing approaches, controls multi-point responses by linearly transferring vector, with transformation matrix containing set of parameters, each which be very...
The inappropriate application of pesticides to vegetable crops often results in environmental pollution, which seriously impacts the environment and human health. Given that current methods pesticide residue detection are associated with issues such as low accuracy, high equipment cost, complex flow, this study puts forward a new method for detecting residues on lettuce leaves. To establish method, spectral analysis was used determine characteristic wavelength (709 nm), machine vision...
The efficient conversion and utilization of CO 2 is imminent due to the increase global emissions year by year, so strategy electrocatalytic reduction high value‐added chemicals comes into being. reaction (CO RR) can yield diversified products, including C 1 (like CO, CH 4 , etc.), H 5 OH, other multicarbon compounds. Thereinto, selective transformation compounds relatively significative reason industrial value but being greatly challenging, particularly involving complex CC coupling....
In this paper, the optimal and precise array response control (OPARC) algorithm proposed in Part I of two paper series is extended from single point to multi-points. Two computationally attractive parameter determination approaches are provided maximize gain under certain constraints. addition, applications multi-point OPARC signal processing studied. It applied realize pattern synthesis (including general case large case), multi-constraint adaptive beamforming, quiescent control, where an...