A5080870111- Electromagnetic Scattering and Analysis
- Electromagnetic Simulation and Numerical Methods
- Chalcogenide Semiconductor Thin Films
- Microwave Imaging and Scattering Analysis
- Thin-Film Transistor Technologies
- Electromagnetic Compatibility and Measurements
- Advanced Antenna and Metasurface Technologies
- Advanced Cellulose Research Studies
- Semiconductor materials and interfaces
- Advanced Semiconductor Detectors and Materials
- Corrosion Behavior and Inhibition
- Copper-based nanomaterials and applications
- Enhanced Oil Recovery Techniques
- Quantum Dots Synthesis And Properties
- Phase-change materials and chalcogenides
- Semiconductor Quantum Structures and Devices
- Integrated Circuits and Semiconductor Failure Analysis
- Silicon and Solar Cell Technologies
- ZnO doping and properties
- Material Properties and Processing
- Conducting polymers and applications
- Fuel Cells and Related Materials
- Semiconductor materials and devices
- Advanced Surface Polishing Techniques
- Advanced Battery Materials and Technologies
City University of Hong Kong
2023-2024
Hong Kong Science and Technology Parks Corporation
2024
Nanjing University
1987-2024
Marine Biomedical Research Institute of Qingdao
2023
China University of Petroleum, Beijing
2019-2023
Dongguk University
2021-2022
Shaanxi University of Science and Technology
2018-2022
Ministry of Education of the People's Republic of China
2020
Zhejiang University
2017
The University of Texas at Austin
2010-2016
Aqueous metal-ion batteries are considered next-generation energy storage devices with improved safety. However, they suffer from sluggish kinetics and side reactions. This work presents a zinc-ion encapsulation strategy based on the poloxamer pre-solvation sheath for realization of efficient zinc anode–electrolyte interfaces. The poloxamers can reversibly self-assemble into by electron-donating effect effectively shield ions surrounding water. also lowers activation desolvation, endowing...
A 3-D extension of the adaptive integral method (AIM) is presented for fast analysis scattering from electrically large perfect conducting structures embedded inside a single layer planar layered medium. The proposed scheme accelerates iterative method-of-moments (MOM) solution combined-field equation by employing auxiliary regular grid. It uses grid to execute standard four-stage AIM procedure; unlike procedure free space, two different sets matrices are obtained propagation stage...
Nitrogen‐doped carbon‐coated transition‐metal sulfides (TMS@NCs) have been considered as efficient anodes for sodium‐ion batteries. However, the uncontrollable morphology and weak core–shell binding forces significantly limit sodium storage performance life. Herein, based on reversible ring‐opening reaction of epoxy group tertiary amino group‐rich epoxide cationic polyacrylamide (ECP) at beginning hydrothermal process (acidic environment) irreversible (cross‐linking reactions) late period...
To produce high-performance devices on flexible plastic substrates, it is essential to form Ge-based group IV semiconductors insulating substrates at low temperatures (≤250 °C). We have developed a technique for solid phase crystallization of amorphous GeSn (≤220 °C) enhanced by Sn doping, and combined with seeding induced melting (∼250 This combination produces lateral from seed arrays no incubation time. As result, extremely high growth velocities 220 °C, depending concentration, e.g.,...
Thin films of new alloy semiconductor CuxZnyS are fabricated by the photochemical deposition (PCD) method. In PCD, sulfide is formed owing to reactions activated ultraviolet radiation in a solution. with bandgap between 2.5–3.7 eV deposited from an aqueous solution containing CuSO4, ZnSO4 and Na2S2O3, influences various parameters on film composition investigated. The larger than 3 shows high optical transmission (70–80%) visible region. P-type conduction photosensitivity confirmed...
High crystalline quality thick films of single crystal CdTe were grown directly on (211) Si substrates using MOVPE growth technique for gamma ray detector fabrication. A highest growth-rate 65 mum/h was achieved at a substrate temperature 600 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">deg</sup> C. Films monocrystalline as confirmed from the X-ray diffraction pattern. Results 4.2 K photoluminescence measurement showed good quality. The...
Abstract This article presents a detailed comparison of the moment, near‐field, and far‐field matching schemes that are used in precorrected FFT/adaptive integral method solvers to anterpolate currents (interpolate fields) on nonuniform mesh structure interest terms sources (observers) an auxiliary regular grid. A general error measure is developed evaluate free space or layered media for high‐ low‐frequency regime operation. It shown moment most robust scheme, accurate scheme high‐frequency...
Hydrophobically associating polymer (HAMDP) was synthesized by using acrylamide, acrylic acid, 2-acrylamido-2-methylpropane sulfonic acid and dodecyl 2-methylacrylate as main monomers. Dynamic rheometer self-made simulation evaluation apparatus were used to test the rheological drag reduction properties of HAMDP. With mass concentration increased, apparent viscosity HAMDP increased. The critical aggregation 2.29g/L. changement strain, elastic modulus larger than viscous modulus. increment...
The effectiveness of multigrid and fast Fourier transform (FFT) based methods are investigated for accelerating the solution volume integral equations encountered in bioelectromagnetics (BIOEM) analysis. typical BIOEM simulation is mixed-frequency regime analysis because field variations domain dictated by a combination free space wavelength, geometrical features, wavelengths/skin depths tissues. In this case, multigrid-based (when appropriately truncated at high-frequency levels) can...
Cu x Zn y S thin films were deposited on indium–tin oxide-coated glass substrates by the electrochemical deposition (ECD) method using aqueous solutions containing CuSO 4 , ZnSO and Na 2 O 3 . The film under optimum conditions exhibited a high optical transmission, its energy band gap was about 3.2 eV. It confirmed that showed p-type conduction photosensitivity. To fabricate ZnO/Cu heterojunction, an n-type ZnO ECD. In current–voltage measurement, heterojunction rectification properties.
An efficient integral-equation method is presented for the fast analysis of scattering from arbitrarily shaped 3-D structures in a rectangular cavity. The proposed employs: 1) frequency-domain surface-volume electric field integral equation to model conductors and dielectrics; 2) rectangular-cavity Green functions account cavity walls; 3) Ewald spatial interpolation accelerate function computations; 4) adaptive (AIM) reduce computational complexity iterative method-of-moments solution...
Abstract Solvent-free and highly branched water-soluble polyester (WPET) is prepared through self-emulsification methodology, using dimethyl terephthalate (DMT), sodium isophthalate-5-sulfonate (SIPM), trimethylolpropane (TMP), ethylene glycol (EG) by the transesterification polycondensation. The WPET were first utilized as surface-sizing agents for cellulose fiber paper. structure, average molecular weights, physical properties of characterized FTIR, 1 H NMR, gel permeation chromatography...
Piezoionics is an emerging mechanical-electrical energy conversion paradigm that enables self-powered sensing systems for next-generation intelligent wearable electronics. However, there are currently no rational design approaches to enhance the stimulus response of piezoionic devices. Here, we present a strategy using crown ether as ion-selective mobility differential amplifiers enhancing pressure-induced voltage in ionic polyvinyl alcohol (PVA) hydrogels. The grafted PVA (PVA-CE) hydrogel...
Purpose The purpose of this study is to evaluate the effect graphene, basalt flakes and their synergy on corrosion resistance zinc-rich coatings. As important heavy-duty anticorrosion coatings, coatings provided cathodic protection for substrate. However, ensure protection, a large number zinc powder made penetration known as weakness Therefore, graphene were introduced into coordinate its shielding performance. Design/methodology/approach Three kinds prepared; they modified graphene-basalt...
Temporary plugging and diversion fracturing technology play a vital role in boosting the production of tight reservoirs. The increase net pressure fractures is core temporary fracturing, which closely related to permeability aggregates. However, evolution bodies has received limited research attention. In this paper, novel experimental system for evaluating capacity agents firstly established. This device allows us measure critical parameters such as injection pressure, length body during...
The iterative method-of-moments solution of the volume electric field integral equation is used to analyze electromagnetic scattering from arbitrarily shaped, three-dimensional anisotropic lossy dielectrics that reside in uniaxial planar layered media. A dyadic contrast ratio defined, Green functions are used, and two testing schemes evaluated. Numerical results validate method's accuracy compare performance schemes.
This paper characterizes the frequency domain near-field coupling effects from complicated three-dimensional transmission lines, monopole/dipole radiators, and printed circuit boards (PCBs) located in a metallic rectangular cavity with an efficient iterative fast Fourier transform-accelerated integral-equation method. The simulation method combines rectangular-cavity Green's functions frequency-domain electric field integral equation, which is further accelerated by extension of adaptive for...
The multiple-grid adaptive integral method (MG-AIM) is extended for fast analysis of scattering from piecewise homogeneous structures on or above a perfect electrically/ magnetically conducting plane. Because the Green functions in relevant equations contain (i) reflection terms that are correlation form direction normal to plane and (ii) direct convolution all directions, MG-AIM propagation stage gives rise Hankel-(two level) block-Toeplitz matrices addition usual (three matrices. These...