Partial loss of upper limb motor function is a typical sequela of stroke. To help such patients actively cope with daily challenges and improve their quality of life, limb functional assistances play important roles. ...
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This study demonstrates the fabrication of mesoporous tungsten trioxide(WO3)-decorated flexible polyimide(PI) electrodes for the highly sensitive detection of catechol(CC) and hydroquinone(HQ),two environmenta...
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This study demonstrates the fabrication of mesoporous tungsten trioxide(WO3)-decorated flexible polyimide(PI) electrodes for the highly sensitive detection of catechol(CC) and hydroquinone(HQ),two environmental ***-inorganic composite dots are formed on flexible PI electrodes using evaporation-induced self-assembly(EISA) and electrospray *** EISA process is induced by a temperature gradient during electrospray,and the heated substrate partially decomposes the organic parts etched by O2plasma,creating mesoporous *** pulse voltammetry and cyclic voltammetry demonstrate a linear correlation between analyte concentration and the electrochemical *** studies support the spontaneous adsorption of CC and HQ molecules on model *** proposed sensor shows high sensitivity,a wide linear range,and a low detection limit for both individual and simultaneous determination of CC and *** sample analysis on river water confirms practical *** WO3-decorated PI electrode presents an efficient and reliable approach for detecting these pollutants,contributing to environmental safety measures.
Hydrogen embrittlement in Al-Zn-Mg-Cu alloys is suggested to originate from debonding of the η phase interface. Previous studies have shown that intragranular T phase precipitation, facilitated by increased Mg conten...
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Inspired by molecular catalysts,researchers developed atomically precise nitrogen-coordinated single or dual metal sites imbedded in graphitized carbon(M-N-C)to fully utilize metallic sites for *** catalysts performed...
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Inspired by molecular catalysts,researchers developed atomically precise nitrogen-coordinated single or dual metal sites imbedded in graphitized carbon(M-N-C)to fully utilize metallic sites for *** catalysts performed remarkably well in the electrocatalytic oxygen reduction reaction(ORR)due to their distinct coordination and electrical structures,Nonetheless,their maximum efficacy in practical applications has yet to be *** agenda identifies tailoring the coordination environment,spin states,intersite distance,and metal-metal interaction as innovative approaches to regulate the ORR performance of these ***,it is necessary to undertake a precise assessment of these methodologies and the knowledge obtained to be implemented in the design of future M-N-C catalysts for ***,this review aims to analyze recent progress in M-N-C ORR catalysts,emphasizing their innovative engineering with aspects such as alteration in intersite distance,metal-metal interaction,coordination environment,and spin ***,we critically discuss how to logically monitor the atomic structure,local coordination,spin,and electronic states of M-N-C catalysts to modulate their ORR *** have also highlighted the challenges associated with M-N-C catalysts and proposed suggestions for their future design and fabrication.
Refractory high-entropy alloys(RHEAs)exhibit outstanding strength at room temperature,but their high-temperature applications are hindered by severe ***,we report slip-band-driven dy-namic recrystallization to enhance...
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Refractory high-entropy alloys(RHEAs)exhibit outstanding strength at room temperature,but their high-temperature applications are hindered by severe ***,we report slip-band-driven dy-namic recrystallization to enhance the high-temperature strain hardening of HfNbTaTiZr *** intro-ducing partial lattice defects through hot forging,we increase the nucleation sites for dynamic recrys-tallization during subsequent thermomechanical deformation,thus suppressing the strain-softening *** reveal that the high-temperature deformation is governed by the formation of heterogeneous bimodal grains along slip bands,which effectively constrain dislocation motion and improve strength,while microbands prevent premature *** fracture mode also changes from ductile to mixed to cleavage-dominated with increasing *** results demonstrate a simple and effective method for overcoming high-temperature strain-softening for BCC high entropy alloys.
Due to the rapid development and potential applications of iron(Ⅲ)-alginate(Fe-Alg)microgels in biomedical as well as environmental engineering,this study explores the preparation and characterization of spherical Fe...
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Due to the rapid development and potential applications of iron(Ⅲ)-alginate(Fe-Alg)microgels in biomedical as well as environmental engineering,this study explores the preparation and characterization of spherical Fe-Alg microgels using droplet microfluidics combined with an external ionic crosslinking *** study focused on the role of Fe^(3+)and examined its effects on the physical/chemical properties of microgels under different ionic conditions and reduced or oxidized *** pH-dependent release behavior of Fe^(3+)from these microgels demonstrates their potential biomedical and environmental ***,the microgels can exhibit magnetism simply by utilizing in situ oxidation,which can be further used for targeted drug delivery and magnetic separation technologies.
Aeroelastic limit cycle oscillation results are presented for a three-degree-of-freedom plunge, pitch, and flap structural model with flap free-play in a viscous transonic flow airfoil. A nonlinear frequency domain ha...
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The glass-forming ability(GFA)of metallic glasses is a key scientific challenge in their development and application,with compositional dependence playing a crucial *** studies have demonstrated that the addition of s...
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The glass-forming ability(GFA)of metallic glasses is a key scientific challenge in their development and application,with compositional dependence playing a crucial *** studies have demonstrated that the addition of specific minor elements can greatly enhance the GFA of parent alloys,yet the underlying mechanism remains *** this study,we use the ZrCuAl system as a model to explore how the addition of minor Al influences the crystallization rate by modulating the properties of the crystal-liquid interface,thereby affecting the *** results reveal that the minor addition of Al significantly reduces the crystal growth rate,a phenomenon not governed by particle density fluctuations at the *** impact of minor element additions extends beyond a modest increase in crystal-unfavorable motifs in the bulk supercooled *** importantly,it leads to a significant enrichment of these motifs at the crystal-supercooled liquid interface,forming a dense topological network of crystal-unfavorable structures that effectively prevent the growth of the crystalline interface and enhance *** results provide valuable insights for the design and development of high-performance metallic glasses.
Graphene fiber supercapacitors(GFSCs)have garnered significant attention due to their exceptional features,including high power density,rapid charge/discharge rates,prolonged cycling durability,and versatile weaving *...
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Graphene fiber supercapacitors(GFSCs)have garnered significant attention due to their exceptional features,including high power density,rapid charge/discharge rates,prolonged cycling durability,and versatile weaving ***,inherent challenges in graphene fibers(GFs),particularly the restricted ion-accessible specific surface area(SSA)and sluggish ion transport kinetics,hinder the achievement of optimal capacitance and rate *** existing reviews on GFSCs,a notable gap exists in thoroughly exploring the kinetics governing the energy storage process in *** review aims to address this gap by thoroughly analyzing the energy storage mechanism,fabrication methodologies,property manipulation,and wearable applications of *** theoretical analysis of the energy storage process,specific parameters in advanced GF fabrication methodologies are carefully summarized,which can be used to modulate nano/micro-structures,thereby enhancing energy storage *** particular,enhanced ion storage is realized by creating more ion-accessible SSA and introducing extra-capacitive components,while accelerated ion transport is achieved by shortening the transport channel length and improving the accessibility of electrolyte *** on the established structure-property relationship,several critical strategies for constructing optimal surface and structure profiles of GF electrodes are *** on the exceptional flexibility and wearability of GFSCs,the review further underscores their potential as foundational elements for constructing multifunctional e-textiles using conventional textile *** conclusion,this review provides insights into current challenges and suggests potential research directions for GFSCs.
This paper investigates the Mode I interlaminar fracture toughness of hybrid composites reinforced with recycled carbon fiber and various unidirectional fiber (glass, carbon, and flax). Specimens were tested using a m...
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