31 Result(s)
within
Kejun **
Characterization and Evaluation of Materials
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Article
Delamination Initiation Identification of Mode II Based on AE Characterization of Composite Damage Mechanism
In order to understand the delamination growth under mode II loading from the perspective of composite damage mechanisms, this study conducted in-depth research on the damage evolution of laminated plates usin...
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Article
Abnormal Grain Growth and Strain Behavior of Friction Stir Welding Joint for 6061 Aluminum Alloy
The abnormal grain growth (AGG) and strain behavior of friction stir welding (FSW) joints for a 6061 aluminum alloy subjected to various solution treatments was investigated using electron backscattering diffr...
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Article
Cotton swabs wrapped with three-dimensional silver nanoflowers as SERS substrates for the determination of food colorant carmine on irregular surfaces
A lightweight, portable, low-cost, and accessible cotton swab was employed as surface enhanced Raman spectroscopy (SERS) matrix template. The silver nanoflowers were in situ grown on the surface of cotton swa...
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Article
Optimization of wideband RCS reduction via controlled phase and amplitude in metasurface design
In this study, we introduce a strategy for constructing an absorptive metasurface, which integrates the absorption and phase cancellation mechanisms. Through topological optimization and the synthesis of a che...
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Article
High-efficiency photocatalyst based on a MoSiGeN4/SiC heterojunction
The construction of an environmentally friendly and efficient photocatalyst for water splitting and hydrogen evolution can effectively alleviate the pressure of current energy consumption and environmental pol...
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Article
Twist Angle-Dependent Interface Thermal Conductance in MoS2 Bilayers
The interface effect on the interface thermal conductivity of twisted MoS2 bilayers was calculated, based on an interface adhesion model that combines the Born–von Karman (BvK) phonon dispersion method and the Le...
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Article
Effect of annealing temperature on the electromagnetic properties of La0.8Sr0.2MnO3 prepared by sol–gel process
La0.8Sr0.2MnO3 (LSMO) powder was prepared using the sol–gel method and treated at different annealing temperatures (AT), and the effects of AT on the crystal structure, oxygen vacancies, magnetic, electromagnetic...
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Article
Preparation and Evaluation of the Supercapacitive Performance of MnO2/3D-reduced Graphene Oxide Aerogel Composite Electrode Through In Situ Electrochemical Deposition
Composite supercapacitive materials can combine two different kinds of electrode materials with different energy storage mechanisms, as well as present enhanced supercapacitive performance. In this paper, a re...
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Article
Synthesis and photoluminescence properties of a novel red-emitting Eu3+-doped LiSrGd(WO4)3 phosphors
Rare-earth (RE)-doped tungstate LiSrGd1−x(WO4)3:xEu red-emitting phosphors were prepared by traditional high-temperature solid-state reaction method. These samples were characterized by X-ray diffraction, scannin...
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Article
Open AccessIntersystem crossing and exciton–defect coupling of spin defects in hexagonal boron nitride
Despite the recognition of two-dimensional (2D) systems as emerging and scalable host materials of single-photon emitters or spin qubits, the uncontrolled, and undetermined chemical nature of these quantum def...
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Article
Analysis of glycan expression on cell surfaces by using a glassy carbon electrode modified with MnO2 nanosheets and DNA-generated electrochemical current
Electrochemical assay for analysis of cell surface glycan expression is reported. Mannose on human breast cancer cells (type MCF-7) is selected as the glycan model. Gold nanoparticles are modified with binding...
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Article
Upconversion photoluminescence analysis of fluoroquinolones
The characteristics of the upconversion (UC) photoluminescence (PL) of fluoroquinolones (FQs) are reported here for the first time. Using UC PL, a simple, sensitive, and cost-effective method of determining FQ...
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Article
Construction of novel Cu2O/PbBiO2Br composites with enhanced photocatalytic activity
In this work, novel Cu2O/PbBiO2Br heterojunction composites have been successfully prepared by hydrothermal method and oxidation–reduction process. The structure, morphology, optical and electronic properties of ...
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Article
The Effect of Flowing Velocity and Impact Angle on the Fluid-Accelerated Corrosion of X65 Pipeline Steel in a Wet Gas Environment Containing CO2
This study investigated the effect of flowing velocity and impact angle on the fluid-accelerated corrosion (FAC) of X65 pipeline steel in a wet CO2-containing environment by corrosion morphology analysis, electro...
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Article
Progress in low-frequency microwave absorbing materials
Electromagnetic wave equipment and devices working at low frequency of 0.5–8 GHz have been extensively used in wireless data communication systems, local area network, household appliances and so on. It is fou...
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Article
Facile synthesis of 2D single-phase Ni0.9Zn0.1O and its application in decolorization of dye
A novel single-phase Ni0.9Zn0.1O was synthesized by using a simple hydrothermal method. The crystal structure, morphology and element distribution have been analyzed by X-ray diffraction, transmission electron mi...
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Article
Morphological Simulation of Phase Separation Coupled Oscillation Shear and Varying Temperature Fields
This paper explores the effect of the shear frequency and Prandtl number (Pr) on the procedure and pattern formation of phase separation in symmetric and asymmetric systems. For the symmetric system, the periodic...
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Article
Easy hydrothermal synthesis of multi-shelled La2O3 hollow spheres for lithium-ion batteries
Herein, uniform triple-shelled La2O3 hollow spheres were synthesized for the first time by a facile one-pot hydrothermal method capable of controlling the number of internal thin-shells, which can be achieved by ...
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Article
Amperometric detection of microRNA based on DNA-controlled current of a molybdophosphate redox probe and amplification via hybridization chain reaction
An electrochemical sensor is described for the determination of microRNA-21 by combing the DNA generated current with target-triggered hybridization chain reaction (HCR). A thiol-modified hairpin capture probe...
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Article
Open AccessModification of Ammonia Decomposition Activity of Ruthenium Nanoparticles by N-Do** of CNT Supports
The use of ammonia as a hydrogen vector has the potential to unlock the hydrogen economy. In this context, this paper presents novel insights into improving the ammonia decomposition activity of ruthenium nano...
