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Improved laser-induced dynamic wetting behavior and spreading mechanism of non-reactive Mg/steel systems with the assistance of Cu coating
A Cu coating was introduced on the steel surface by electroplating, and the wetting and spreading behavior of Mg alloys on Cu-coated steel substrates during the laser machining process was investigated. Wettin...
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Article
Deposition of Pd–Pt alloy zigzag shell over Au nanorods for boosted catalysis and thermo-photo catalysis
Multimetallic plasmonic nanostructures, with appropriate morphology, elemental proportions and sizes, can be used to accelerate photocatalytic reactions. Here, we designed zigzag trimetallic nanostructures wit...
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Article
An Improved YOLOv5s Fire Detection Model
It is well-established that contact fire sensors are susceptible to interference from non-fire particles and cannot be applied to fire alarms in both large indoor and outdoor open spaces. On the other hand, th...
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Article
Temperature-insensitive electrical performance of the potassium sodium niobate-based ceramics modified by barium zirconate
A series of barium zirconate modified potassium sodium niobate-based lead-free piezoelectric ceramics [(0.97-x)(K0.45Na0.55)(Nb0.97Sb0.03)O3-0.03Bi0.5K0.075Na0.425ZrO3-xBaZrO3, KNNS–BKNZ–xBZ, x = 0 ~ 0.02] were p...
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Article
Enhancement of Track Damage Identification by Data Fusion of Vibration-Based Image Representation
In this paper, the vibration-based image representation and data fusion demonstrates distinctive benefit in feature extraction, yielding superior performance for damage identification in railway engineering. S...
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Article
Open AccessRecent Trends in Plasma-Assisted CO2 Methanation: A Critical Review of Recent Studies
In recent years, enormous efforts have been devoted to alleviating global energy demand and the climate crisis. This has instigated the search for alternative energy sources with a reduced carbon footprint. Ca...
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Article
Preparation of one-step organic anion-modified MgAl-LDH films under mild conditions for Mg alloy corrosion protection
The chelator-assisted method is considered to be an effective strategy for the in-situ growth of layered double hydroxide (LDH) films on magnesium alloy at atmospheric pressure. In this study, two organic anio...
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Article
Effect of Yarn Reduction Types on the Mechanical Response and Damage Mechanism of 3D Woven Composites Subjected to Low-velocity Impact
Yarn reduction is the core technology of near-net forming conical rotating components. This paper presents the influence of yarn reduction defects on the low-velocity impact (LVI) and compression after impact ...
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Article
Effects of fused silica surface roughness on the interfacial adsorption mechanism of contaminant
Since surface contaminants can make optical components such as fused silica highly susceptible to damage, how to maintain the cleanliness of fused silica is an effective way to improve the laser damage thresho...
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Article
Characterization of deep-level defects in highly-doped silicon with asymmetric structure by transient capacitance spectroscopy
Deep-level transient spectroscopy (DLTS) is a widely used method to analyze the properties of deep defects in semiconductors. However, it has been rarely reported to measure the deep-levels of highly-doped sil...
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Article
Influence of sodium fluoride in acidic electrolytic solution on the structure and properties of plasma electrolytic oxidation coating on AZ91D magnesium alloy
By adopting the strategy of generating chelating agents during plasma electrolytic oxidation (PEO), PEO coatings were prepared in acidic eletrolytic solution by constant current mode. The effect of NaF concent...
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Article
A study of size-controlled Au@Cu2O nanocomposite for highly improved methyl orange catalytic performances
In this study, we synthesized Au-Cu2O core–shell nanoparticles (Au@Cu2O NPs) with epitaxial Cu2O shell, which have highly improved catalytic performances in methyl orange reduction reaction. We have obtained Au@C...
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Article
Flowable MXene/cellulose nanofibers conductor for linear and high-accuracy strain sensing
Stretchable strain sensors can detect the bio-signals generated by human motions in real-time and play an important role in human health monitoring. However, due to the balance between sensitivity and stretcha...
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Article
Significantly enhanced mechanical quality factor with favorable piezoelectricity in K0.5Na0.5NbO3-based ceramics
The apparent incompatibility between d33 and Qm in potassium sodium niobate-based lead-free ceramics is an obstacle to their applications. In this study, (K0.5Na0.5)0.98Li0.02Nb0.82Ta0.18O3 (LT-KNN) system near t...
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Article
A novel covalent organic framework with high-density imine groups for lithium storage as anode material in lithium-ion batteries
A novel hexaaminobenzene-based triangular topology covalent organic framework (HAB-COF) was first synthesized and studied as an anode material in the lithium-ion batteries. Benefiting from its conjugated struc...
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Article
Study on the effect of dynamic disturbance on creep behavior of frozen fractured red sandstone
The freezing method is an effective water shut-off method for shaft construction in water-rich Cretaceous strata in Northwest China. Blasting is an efficient excavation method for vertical shafts crossing the ...
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Article
Coiled Tubing Erosion Prediction and Fracturing Fluid Parameters Optimization During Hydraulic Jet Fracturing
The erosion wear of coiled tubing wound on the drum by fracturing fluid gravel greatly affects its service life and the operation safety during hydraulic jet fracturing operation in oilfield applications. Base...
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Article
MnO2/carbon nanotube free-standing electrode recycled from spent manganese-oxygen battery as high-performance supercapacitor material
Metal–oxygen batteries have been growing rapidly as an energy storage technology in light of their high specific energy density. However, waste metal–oxygen batteries will raise many environmental issues; ther...
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Article
Temperature induced electrical transport in n-Bi2Te3/p-InAs thermoelectric heterojunctions
Thermoelectric semiconductor devices have recently attracted more interest since their electrical properties can be further adjusted by the temperature field. Many efforts have been made in thermoelectric junc...
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Article
Analysis on Fishing Failure Mechanism of Downhole Choke in Tight Gas Well
In view of the failure causes of downhole choke fishing in tight gas wells, taking the choke fishing failure in Daning–Jixian block as representative, the failure causes are summarized through the actual fishi...