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Tunable structured laser over full spatial spectrum 认领 引用
1
作者 Quan Sheng Jing-Ni Geng +12 位作者 Jia-Qi Jiang Tian-Chang Liu David James Spence Helen Margaret Pask Allam Srinivasa Rao Takashige Omatsu Shi-Jie Fu Zhen-Xu Bai Zhi-Wei Lv Wei Shi Jian-Quan Yao Carmelo Rosales-Guzmán Zhi-Han Zhu 《Light: Science & Applications》 SCIE EI CAS CSCD 2026年第6期1926-1935,共10页
Modern tunable lasers are indispensable instruments in fundamental science and optical frequency applications.With the growing interest in structured light,there’s a need for tunable structured lasers with high trans... Modern tunable lasers are indispensable instruments in fundamental science and optical frequency applications.With the growing interest in structured light,there’s a need for tunable structured lasers with high transverse electromagnetic(TEM)modal purity across a broad spatial spectrum,but no commercial solutions exist.Here,we present the first tunable structured laser that can emit all possible single TEM modes with extremely high purity over a wide range.This is achieved by the collaborative use of intracavity pump geometry and astigmatic detuning to selectively gain a desired mode while blockading others.Our astigmatic oscillator can tunably generate any TEM mode within the spatial bandwidth,achieving over 40,000 orthogonal Hermite-Gauss modes in the experiment,and each can be further expanded into numerous Hermite-Laguerre-Gauss modes via unitary transformation.This approach does not require extra intracavity beam shaping components,offering a promising design for commercially available structured lasers with full spatial spectrum tunability. 展开更多
关键词 tunable lasers high transverse electromagnetic modal purity structured lightthere s tunable structured laser fundamental science spatial spectrum structured laser intracavity pump geometry
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Millimeter/Nano‐Structured Metal Monolithic Catalysts:A Privileged Opportunity for Sustainable Water Purification 认领 引用
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作者 Jia‐Cheng E.Yang Min‐Ping Zhu +2 位作者 Zhimin Ao Darren Delai Sun Yu‐Ming Zheng 《Rare Metals》 SCIE EI CAS CSCD 2026年第6期51-90,共40页
Cross‐scale assembly of metal(sub)nanoparticles and/or single atoms into millimeteranostructured metal monolithic catalysts(Min‐SMCs)is highly appealing for sustainable water cleanup,due to energy‐efficient catalys... Cross‐scale assembly of metal(sub)nanoparticles and/or single atoms into millimeteranostructured metal monolithic catalysts(Min‐SMCs)is highly appealing for sustainable water cleanup,due to energy‐efficient catalyst recyclability,high infrastructure compatibility,and low metal‐releasing risks.However,it is still far from establishing a common paradigm for practical catalytic water purification,which requires not only high‐performance metal catalysts that drive pollutants mineralization/conversion but also highly efficient reaction processes and systems that enable scalable deployment.Herein,we discuss the state‐of‐the‐art status in the design of Min‐SMCs and their challenges encountered in activating hydrogen peroxide,persulfate,and ozone as well as coupled catalytic processes for water decontamination.By bridging the gap between materials chemists and water engineers,who are both interested in developing new Min‐SMCs but possess different expertise and focus areas,we propose an acronym“NICER”framework for sustainable Min‐SMCs design comprising five priority themes:near‐zero carbon footprint(N),intensifying catalytic processes(I),cost management(C),emerging contaminant elimination(E),and resource recovery(R).The proposed“NICER”paradigm fostering Min‐SMCs innovation will stimulate application‐oriented pilot‐and full‐scale trials for(de)centralized water purification,promote societal acceptance to revolutionize clean water production,and ultimately advance water resilience toward Sustainable Development Goals 6. 展开更多
关键词 emerging contaminants heterogeneous catalytic oxidation metal catalysis structured monolithic catalysts water resilience
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Design of Flexible Buoyancy Modules for Deep-Sea Bionic Robots Via Structured Grid-Based Contour Adaptation 认领 引用
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作者 Ruilong Luo Jiawei Lin +1 位作者 Biao Wang Fang Wang 《Journal of Bionic Engineering》 SCIE EI CSCD 2026年第2期701-715,共15页
Due to their lightweight and flexibility,soft bionic robots are popular in deep-sea exploration.However,existing buoyancy materials lack optimal compatibility.This study proposes a flexible,pressure-resistant,multi-me... Due to their lightweight and flexibility,soft bionic robots are popular in deep-sea exploration.However,existing buoyancy materials lack optimal compatibility.This study proposes a flexible,pressure-resistant,multi-medium buoy-ancy module comprising a flexible cavity filled with a Hollow Glass Microsphere(HGM)-water mixture and introduces structured-grid thinking,which enables contour adaptation to complex bionic robot morphologies.The density and pressure resistance of the buoyancy modules were experimentally tested,and the effects of varying silicone hardness,wall thickness,and volume percentage of HGM in the mixture on the performance of the buoyancy modules were compared.The results indicate that the density of the buoyancy modules ranges from 0.751 to 0.964 g/cm3.Under a pressure of 30 MPa,the volume change rate of the buoyancy modules is between 1.74%and 2.13%.The effect of air content in the flexible cavity on buoyancy modules under high pressure was examined by comparing experimental findings with simulations. 展开更多
关键词 Flexibility Buoyancy module Pressure-resistant Structured grid thinking
Mineralized DNA tetrahedron-structured hydrogels:a dual-functional Scaffold for immunomodulation and bone regeneration 认领 引用
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作者 Lan Yao Jiafei Sun +9 位作者 Zhiqiang Liu Jiale Liang Yun Wang Ye Chen Ruiqing Wang Tao He Yichen Yang Yao He Yunfeng Lin Taoran Tian 《Bone Research》 SCIE CAS CSCD 2026年第3期846-860,共15页
Clinical limitations of autografts and allografts have driven advances in bone tissue engineering.Emerging biomaterials offer tunable mechanical and bio-regenerative properties for bone reconstruction.DNA hydrogels ha... Clinical limitations of autografts and allografts have driven advances in bone tissue engineering.Emerging biomaterials offer tunable mechanical and bio-regenerative properties for bone reconstruction.DNA hydrogels have attracted increasing attention due to their extracellular matrix–like architecture and excellent cargo-loading capacity.However,their rapid degradation and limited immunomodulatory activity have hindered their long-term efficacy in bone regeneration.To address these limitations,a mineralized tetrahedral framework nucleic acids(tFNAs)hydrogel(Cap-gel)was engineered to integrate early immunoregulation with sustained osteogenic activity.The stable and programmable spatial structure of tFNAs not only promotes macrophage polarization toward the M2 phenotype by presenting immunomodulatory ligands but also serves as a nucleation template for calcium phosphate crystallization,leading to the formation of nano-mineralized structures with controlled morphology.In vitro,Cap-gel promoted osteogenic differentiation via both immune-dependent and independent pathways,while in vivo,it modulated early immune responses and accelerated bone regeneration in a calvarial defect model.In summary,this study introduces a novel tFNA-based mineralized DNA hydrogel system that integrates immunomodulation and osteogenesis,providing a promising strategy for enhanced bone repair in tissue engineering applications. 展开更多
关键词 mineralized dna hydrogels extracellular matrix architecture mineralized t tetrahedron structured hydrogels immunomodulation immunomodulatory activity bone regeneration bone reconstructiondna hydrogels
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Structured representation and compression method of viewshed:An example analysis of communication viewshed 认领 引用
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作者 WANG Yiwen ZHU Jun DOU Wanfeng 《Journal of Geographical Sciences》 SCIE CSCD 2026年第5期1299-1320,共22页
Terrain viewshed analysis,which is a core spatial analysis technology,holds an important position in GISs.Viewsheds are typically represented as field models of discrete sets of visible scattered points in which the l... Terrain viewshed analysis,which is a core spatial analysis technology,holds an important position in GISs.Viewsheds are typically represented as field models of discrete sets of visible scattered points in which the local clustering and spatial structural characteristics of the points are neglected.As a branch of terrain viewsheds,communication viewsheds are used to analyze signal reception with signal towers as observation points.In this study,a structured representation method in which communication viewsheds are used as examples,is proposed.First,each terrain point is treated as a base station,and the communication viewsheds are obtained.Second,each communication viewshed is segmented into subregions using feature recognition,and seven parameters are defined to describe the characteristics of each subregion.Finally,consistency and application verification are used to evaluate the effectiveness of the proposed methods.The experimental results show that the method can effectively reveal the spatial distribution characteristics of communication signal coverage,thereby providing theoretical support for quickly obtaining solutions to base station site planning problems.Furthermore,the structured representation method is also a lossy data compression method.This method is compared with the existing visibility data compression method,and the results indicate that the compression ratio can reach hundreds and increases exponentially with increasing terrain complexity. 展开更多
关键词 communication viewshed structured representation spatial structure characteristics DEM lossy compression
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Self-powered horizontally structured n–n heterojunction photodetector based on Si–GaN/β-Ga2O3 for UV detection 认领 引用
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作者 Muzi Li Maolin Zhang +3 位作者 Xueqiang Ji Shan Li Lili Yang Weihua Tang 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第2期639-646,共8页
With the rapid advancement of optoelectronic technology,high-performance photodetectors are increasingly in demand in fields such as environmental monitoring,optical communication,and defense systems,where ultraviolet... With the rapid advancement of optoelectronic technology,high-performance photodetectors are increasingly in demand in fields such as environmental monitoring,optical communication,and defense systems,where ultraviolet detection is critical.However,conventional semiconductor materials suffer from limited UV-visible detection capabilities owing to their narrow bandgaps and high dark currents.To address these challenges,wide-bandgap semiconductors have emerged as promising alternatives.Here,we fabricated a horizontally structured n–n heterojunction photodetector by growingβ-Ga2O3 on Si–GaN via plasma-enhanced chemical vapor deposition.The device exhibits a self-powered photocurrent of 3.5 nA at zero bias,enabled by the photovoltaic effect of the space charge region.Under 254-nm and 365-nm illumination,it exhibits rectification behavior,achieving a responsivity of 0.475 m A/W(0 V,220??W/cm~2 at 254 nm)and 257.6 mA/W(-5 V),respectively.Notably,the photodetector demonstrates a high photocurrent-to-dark current ratio of 10~5 under-5-V bias,highlighting its potential for self-powered and high-performance UV detection applications. 展开更多
关键词 Si–GaN/β-Ga2O3 horizontally structured n–n heterojunction self-powered
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Structured Random Cycle-Guided Algorithm (SRCA): An Adaptive Metaheuristic Combining Directionally-Guided and Stochastic Search Strategies 认领 引用
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作者 Giuseppe Marannano Antonino Cirello Tommaso Ingrassia 《Computers, Materials & Continua》 SCIE EI 2026年第6期1873-1898,共26页
In response to the growing need for adaptive optimization algorithms capable of handling complex,multimodal,and high-dimensional search spaces,this paper introduces the Structured Random Cycle-guided Algorithm(SRCA).S... In response to the growing need for adaptive optimization algorithms capable of handling complex,multimodal,and high-dimensional search spaces,this paper introduces the Structured Random Cycle-guided Algorithm(SRCA).SRCA is not presented as a fundamentally new optimization paradigm,but rather as an architectural synthesis and a unified adaptive framework for dynamic operator selection.Based on a cycle-structured architecture,directional and stochastic search behaviors are dynamically selected at the individual level.The algorithm orchestrates well-established structured movements with a diverse pool of stochastic exploration strategies,enabling a coherent and adaptive balance between exploration and exploitation throughout the optimization process.Unlike traditional metaheuristics that rely on fixed behavioral roles or static movement schemes,SRCA allows each individual to adapt its search strategy based on real-time population feedback,monitored through convergence and dispersion indicators.The performance of SRCA is quantitatively assessed under strictly identical experimental conditions on a comprehensive set of 23 benchmark functions,including multimodal and high-dimensional problems,as well as on six classical constrained engineering design problems.Numerical results demonstrate competitive convergence reliability and robustness across diverse optimization tasks,confirming the effectiveness of the proposed adaptive cycle-based framework. 展开更多
关键词 Metaheuristic algorithms optimization constrained optimization benchmark functions structured random cycle-guided algorithm
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Pathway analogy for computational fluid dynamics simulations of fluid flow through structured packed beds 认领 引用
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作者 Maxim Nikitin Dmitry Pashchenko 《Particuology》 SCIE EI CAS CSCD 2026年第7期384-393,共10页
Predicting pressure drop in structured packed beds is critical for the design of industrial chemical reactors and heat exchangers.While particle-resolved Computational Fluid Dynamics(CFD)offers high fidelity,its prohi... Predicting pressure drop in structured packed beds is critical for the design of industrial chemical reactors and heat exchangers.While particle-resolved Computational Fluid Dynamics(CFD)offers high fidelity,its prohibitive computational cost for large-scale systems necessitates efficient modeling strategies.This study introduces a novel pathway analogy for fluid flow through structured packed beds in a simple cubic arrangement.The approach deconstructs the complex interstitial flow field into a finite set of discrete,hydraulically independent pathways—classified as full,half,or quarter based on their proximity to the container walls.High-fidelity CFD simulations confirm that cross-flow between these pathways is negligible(<1%)both in laminar and turbulent regimes,justifying their treatment as independent flow units.Universal correlations for the friction factor and a normalized pressure drop are derived for each pathway type as a function of Reynolds number,demonstrating negligible dependence on particle diameter.These foundational correlations are synthesized into a mechanistic engineering model that reconstructs the total pressure drop for a bed of any dimension by summing the weighted contributions of all individual pathways.The model is rigorously validated against experimental data from the literature,showing strong agreement across a wide range of Reynolds numbers and bed configurations.This pathway analogy provides a robust,physics-based framework for drastic computational domain reduction,offering a valuable tool for the efficient design and scaling of structured packed bed systems. 展开更多
关键词 Packed beds Computational fluid dynamics Pressure drop Structured packings Pathway analogy
Enhanced visible light response and cytocompatibility of TiO2-TiC shell-core structured S-scheme photocatalyst 认领 引用
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作者 Yuanyuan Li Sujun Guan +6 位作者 Yingda Qian Liang Hao Sheikh Mohamed Mohamed Lijun Wang Takaomi Itoi Yun Lu Xinwei Zhao 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2026年第3期999-1011,共13页
To enhance the visible light response of titanium dioxide(TiO2),titanium carbide(TiC)nanoparticles(NPs)were thermally treated in carbon powder,effectively overcoming the challenges associated with conventional dopi... To enhance the visible light response of titanium dioxide(TiO2),titanium carbide(TiC)nanoparticles(NPs)were thermally treated in carbon powder,effectively overcoming the challenges associated with conventional doping methods.During the treatment,a TiO2thin shell with oxygen vacancies(OVs)formed around the TiC NPs,creating a shell-core structure S-scheme photocatalyst.Transmission electron microscopy(TEM)and ultraviolet-visible(UV-vis)spectroscopy confirmed the successful formation of the TiO2shell.By optimizing the shell thickness,the TiO2-TiC shell-core structure achieved an ideal shell-core ratio,resulting in strong visible light absorption(400-800 nm),and the degradation rate constant of Rhodamine B(RhB)of sample cHT500 reached 0.0687 min−1,which is 20.8times higher than that of pristine TiO2(0.0033 min−1)under visible-light irradiation.In addition,cytocompatibility tests showed that sample cHT500 exhibits favorable cell viability,which is comparable to that of TiO2nanoparticles,and thus remarkably mitigates the poor biocompatibility inherent to TiC,making them promising candidates for biomedical and photocatalytic applications. 展开更多
关键词 S-scheme heterojunction photocatalysis titanium dioxide shell-core structure cytocompatibility
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Coral-Like Yolk-Shell-Structured CoNi@Void@C Microspheres for Enhanced Microwave Absorption,Photothermal,Anti-Corrosion,and Radiation Shielding Properties 认领 引用
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作者 Jiale Wu Kaizhao Wang +6 位作者 Kaijun Wang Hyeona Park Jangyeon Hwang Junkai Li Yafei Wang Jin Hu Shizhao Xiong 《Rare Metals》 SCIE EI CAS CSCD 2026年第2期887-903,共17页
Considering the multiple challenges faced by stealth coatings in complex service environments,the development of multifunctional integrated microwave absorbing materials (MAMs) that combine efficient electromagnetic (... Considering the multiple challenges faced by stealth coatings in complex service environments,the development of multifunctional integrated microwave absorbing materials (MAMs) that combine efficient electromagnetic (EM) attenuation with environmental tolerance has become an urgent need.In this work,coral-like CoNi@Void@C microparticle (MP) with the yolk-shell structure was synthesized through a continuous process combining conventional solvothermal,sol-gel,oxidative self-polymerization,and acid etching.The precise construction of the magnetic core-cavity-carbon shell structure synergistically optimizes impedance matching and multiple loss mechanisms,endowing the material with outstanding microwave dissipation performance.A minimum reflection loss (RLmin) of -81.24 dB and an effective absorption bandwidth (EAB) of 6.21 GHz are achieved at an ultra-thin matching thickness (dm),and the excellent EM stealth capability is confirmed by a radar cross-section value of 51.82 dB m2.Additionally,the barrier effect of the cavity buffer layer and nonpolar carbon shell simultaneously endow it with low density,super-hydrophobicity,efficient photothermal conversion,corrosion resistance,and performance reinforcement for ionizing radiation shielding,demonstrating potential adaptability in various environments.This work provides a new paradigm for the next generation of environmentally adaptive MAMs through a three-level synergistic strategy of“morphology-cavity-interface”. 展开更多
关键词 CoNi@Void@C microwave absorption multifunctional integration photothermal and anti-corrosion yolk-shell structure
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Gradient structured nanocrystalline-amorphous Fe-based composite coatings with superior strength and wear resistance 认领 引用
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作者 Guoliang Ma Hongzhi Cui +4 位作者 Qing Du Xiaojie Song Hao Zhang Hongwei Zhang Hao Chen 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2026年第1期144-155,共12页
Gradient nanocrystalline–amorphous nanostructures are considered to be an effective approach to achieve exceptional strength–plasticity synergy,with significantly improved wear performance.Here,gradient nanostructur... Gradient nanocrystalline–amorphous nanostructures are considered to be an effective approach to achieve exceptional strength–plasticity synergy,with significantly improved wear performance.Here,gradient nanostructured Fe-based coatings were successfully fabricated by extremely high-speed-rate laser deposition and remelting.The microstructure evolution along the depth direction varies in a nanocrystalline,equiaxial dendrites,columnar dendrites gradient,respectively.Noticeably,amorphous grain boundaries and carbide nanoprecipitates could be identified within the topmost surface nanocrystalline layer owing to the extremely high cooling rate during remelting,which exhibits the highest hardness and wear resisance(microhardness of ~1136 HV,and wear rate of 4.36×10−6mm3/(m N)).The superior wear resistance is mainly attributed to the synergistic nanocrystalline–amorphous deformation and gradient refinement effects.Meanwhile,multi-scale carbides effectively impede dislocation motion and further improve strength and wear resistance at different depths.This gradient structure provides promising insights into the design of high-performance wear-resistant alloys. 展开更多
关键词 Gradient nanostructure Nanocrystalline-amorphous structure Extremely high-speed-rate laser remelting Wear resistance
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An Integrated Flexible Bioelectrical and Biochemical Monitoring System Based on Spindle‑Structured Directional Sweat‑Pumping Nanomesh 认领 引用
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作者 Jingzhi Wu Rongkuan Han +16 位作者 Jianfeng Ma Jinyi Gong Tianxin Guan Peiyan Dong Hao Tang Haidong Liu Jinan Luo Chang Liu Yuanfang Li Degong Zeng Chuting Liu Zhikang Deng Xinyi Qu Lvjie Chen Tian‑Ling Ren Jianhua Zhou Yancong Qiao 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第8期252-267,共16页
Wearable epidermal monitoring holds significant importance in health assessment.However,current electronic skins are limited by poor conformability caused by sweat accumulation,discomfort from low breathability and si... Wearable epidermal monitoring holds significant importance in health assessment.However,current electronic skins are limited by poor conformability caused by sweat accumulation,discomfort from low breathability and single signal,making long-term,stable,and high-throughput signal recording much challenging.In this study,a spindle-structured directional sweat-pumping nanomesh(SDSN)is developed via electrospinning.By combining multiple asymmetries,including wettability,pore size,and spindle-knots structure,the SDSN establishes synergistic forces that enable unidirectional liquid transport at a rate over 1000 times faster than human sweat production during exercise.To demonstrate the advantages in fluid guidance,a dual-architecture and dual-perspective comparative model framework is constructed.The introduction of Au nanomesh as electrodes allows the Au nanomesh electrode to simultaneously monitor electrochemical and electrophysiological signals,while maintaining excellent skin conformability and motion stability.Additionally,a nanomesh-encapsulated flexible circuit is developed capable of continuous wireless monitoring.This system shows potential for correlation analysis of metabolic energy output and cardiovascular response,making it an ideal tool for health management during intense physical labor and exercise. 展开更多
关键词 Permeable electronics Nanomesh Multimodal wearable sensors Sweat unidirectional transportation Spindle structure
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High strength and malleable lamellar-structured Mg/Mg2Sn alloy 认领 引用
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作者 Xu-Jian Lin Si-Mian Liu Wei-Zhong Han 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2026年第2期285-293,共9页
Lightweight Mg alloys are appealing as structural materials for improving energy efficiency in various applications.However,the tradeoff between strength and deformability of Mg at room temperature is a major obstacle... Lightweight Mg alloys are appealing as structural materials for improving energy efficiency in various applications.However,the tradeoff between strength and deformability of Mg at room temperature is a major obstacle to widespread use of Mg alloys.The plasticity of Mg is particularly related to dislocations,which dominates c-axis strain,while it is rarely activated under ambient conditions because of a high critical resolved shear stress.Here,we prepare a lamellar-structured Mg/Mg2Sn alloy consisting of two phases,Mg and Mg2Sn,arranged alternately with high-density phase interfaces,which shows a synergy of high strength and deformability.High-density Mg/Mg2Sn interfaces act as strong barriers for dislocations motion,obstructions for crack propagation,and efficient dislocation sources,which contribute to the strengthening and plasticity of the laminated Mg/Mg2Sn alloy.This unique interface-mediated plasticity provides a new pathway to improve the mechanical properties of hexagonal close-packed Mg alloys. 展开更多
关键词 Mg-Sn alloy Lamellar structure Interface Malleable dislocation
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Core-shell structured CoFe-PBA@NiFe-LDH as efficient electrocatalysts for oxygen evolution reaction 认领 引用
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作者 Guang-Long Wang Jun-Hui Cao +7 位作者 Shu-Sen Hou Yu Zhang Hu Zhou Chun Ouyang Long-Feng Lin Yan-Xin Qiao Yi-Shan Jiang Qi-Chao Zhang 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第7期158-167,共10页
NiFe-based layered double hydroxide(NiFe-LDH)nanosheets were hydrothermally anchored onto the surface of CoFe-based Prussian blue analogue(CoFe-PBA)nanocubes,resulting in the formation of core-shell-structured CoFe-PB... NiFe-based layered double hydroxide(NiFe-LDH)nanosheets were hydrothermally anchored onto the surface of CoFe-based Prussian blue analogue(CoFe-PBA)nanocubes,resulting in the formation of core-shell-structured CoFe-PBA@NiFe-LDH.Electrochemical characterizations revealed that this material exhibits exceptional oxygen evolution reaction(OER)activity coupled with remarkable long-term stability in alkaline media.The optimized CoFe-PBA@NiFe-LDH catalyst achieves a low OER overpotential of 287 mV to reach a current density of 10 mA cm−2,accompanied by a favorable Tafel slope of 77 mV dec−1.Notably,the catalyst can maintain the initial catalytic activity even after 18 h of continuous operation,with its morphology and crystalline structure remaining well-preserved.The superb electrocatalytic performance is fundamentally attributed to the synergistic core-shell architecture,where the uniform decoration of NiFe-LDH nanosheets on CoFe-PBA nanocubes maximizes the exposure of abundant and highly accessible active sites while facilitating the mass transport of reactive intermediates. 展开更多
关键词 Oxygen evolution reaction Electrocatalyst Core–shell structure Prussian blue analogue Layered double hydroxide
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Gyroid-structured SiOC composite with excellent broadband microwave absorption and load-bearing performance 认领 引用
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作者 Hanjun Wei Siyu Chen +5 位作者 Zhiyong Chen Lu Tang Jimei Xue Cunxian Wang Zhijun Wang Ying Li 《Defence Technology（防务技术）》 SCIE EI CAS CSCD 2026年第1期277-288,共12页
Designing materials with both structural load-bearing capacity and broadband electromagnetic(EM)wave absorption properties remains a significant challenge.In this work,SiOC/SiC/SiO2composite with gyroid structures ... Designing materials with both structural load-bearing capacity and broadband electromagnetic(EM)wave absorption properties remains a significant challenge.In this work,SiOC/SiC/SiO2composite with gyroid structures were prepared through digital light processing(DLP)3D printing,polymer-derived ceramics(PDCs),chemical vapor infiltration(CVI),and oxidation technologies.The incorporation of the CVISiC phase effectively increases the dissipation capability,while the synergistic interaction between the gyroid structure and SiO2phase significantly improves impedance matching performance.The SiOC/SiC/SiO2composite achieved a minimum reflection loss(RL min)of-62.2 d B at 4.3 mm,and the effective absorption bandwidth(EAB)covered the X-band,with a thickness range of 4.1 mm-4.65 mm.The CST simulation results explain the broadband and low-frequency absorption characteristics,with an EAB of 8.4 GHz(9.6-18 GHz)and an RL min of-21.5 dB at 5 GHz.The excellent EM wave attenuation performance is associated primarily with polarization loss,conduction loss,the gyroid structure's enhancement of multiple reflections and scattering of EM waves,and the resonance effect between the structural units.The SiOC/SiC/SiO2composite also demonstrated strong mechanical properties,with a maximum compressive failure strength of 31.6 MPa in the height direction.This work opens novel prospects for the development of multifunctional structural wave-absorbing materials suitable for broadband microwave absorption and load-bearing properties. 展开更多
关键词 Digital light processing Gyroid structure SiOC/SiC/SiO2composite Microwave absorption Load-bearing properties
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Phosphorus modification-induced dense crystalline-amorphous heterostructured P-Sn6O4(OH)4@RGO for high-rate and ultra-stable lithium storage 认领 引用
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作者 Zhen Kong Chaoyang Sun +9 位作者 Mingyuan Pang Wei Liu Haohao Zhang Min Yang Jiajia Ye Juan An Yijie Wang Yen Leng Pak Xing Gao Jibin Song 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第1期637-643,共7页
The large volume expansion and rapid capacity attenuation of tin-based electrodes are the main factors limiting their commercial application.The reasonable design of electrode material structure is particularly import... The large volume expansion and rapid capacity attenuation of tin-based electrodes are the main factors limiting their commercial application.The reasonable design of electrode material structure is particularly important for improving its electrochemical performance.Herein,phosphorus-modified graphene encapsulated Sn6O4(OH)4nanoparticles composite(P-Sn6O4(OH)4@RGO)with crystalline-amorphous heterostructure has been successfully designed and prepared.The design of crystalline-amorphous structure has largely enhanced the active sites,and the construction of a graphene encapsulation structure has greatly alleviated volume expansion.Notably,P-Sn6O4(OH)4@RGO obtained an excellent high-rate longterm cycling performance for lithium-ion batteries anode,reaching a high specific capacity of 970 m Ah/g at 1.0 A/g after 1450 cycles.This work demonstrates that restructuring the electrode material's structure and phase through phosphorus modification can effectively improve the electrochemical performance of tin-based electrode materials. 展开更多
关键词 Phosphorus modification P-Sn6O4(OH)4@RGO Crystalline-amorphous heterostructure Graphene encapsulation structure Lithium-ion batteries
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Construction and Clinical Application of a Structured Training Project on Perioperative Diabetes for Non-endocrinology Specialist Nurses 认领 引用
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作者 Zhiqin Li Siyu Zhou +3 位作者 Fang Liu Yangyang Wang Lanlan Zhao Min Li 《Journal of Clinical and Nursing Research》 2026年第6期234-241,共8页
Objective:To address the poor prognosis of patients caused by the weak knowledge and non-standard operation of blood glucose management among non-endocrinology specialist nurses during the perioperative period,this st... Objective:To address the poor prognosis of patients caused by the weak knowledge and non-standard operation of blood glucose management among non-endocrinology specialist nurses during the perioperative period,this study aims to establish a scientific and systematic structured training system.Through a training model that combines theory with practice,it aims to enhance the perioperative blood glucose management ability of nurses,improve the blood glucose control effect,and clinical outcomes of patients.Method:A mixed research method was adopted.The training theoretical framework was constructed through literature analysis.The weights of the course modules were determined by combining semi-structured interviews(n=35)and two rounds of Delphi expert inquiries(expert authority coefficient 0.89)(first-level indicator weights:theoretical foundation 0.25,skill operation 0.35,clinical application 0.28,emergency treatment 0.12).Finally,a structured training program containing 4 first-level indicators and 12 second-level indicators was formed.A total of 86 non-endocrinology specialist nurses(working years 2–15 years,average 6.8±3.2 years;professional titles:32 nurses,38 senior nurses,16 charge nurses)were selected by stratified random sampling and underwent a 4-week training.The training included theoretical lectures,scenario simulations,case studies,and bedside practical operations.After the training,the effects were comprehensively evaluated through theoretical assessments,operational scores,and patients’blood glucose monitoring data.Result:After the training,the standardized rate of perioperative blood glucose monitoring among nurses increased from 54.2%to 91.7%(p<0.001),the qualified rate of standardized insulin injection increased from 58.3%to 91.8%(p<0.001),and the average score of theoretical assessment increased from 62.5±8.3 points to 89.6±5.7 points(p<0.001).The preoperative blood glucose compliance rate of patients increased from 54.3%to 76.8%(p<0.001),the 24-hour blood glucose fluctuation range after surgery decreased from(5.8±1.6)mmol/L to(2.9±0.9)mmol/L(p<0.001),and the incidence of perioperative hypoglycemic events decreased from 8.0%to 2.0%(p=0.008).Multivariate analysis showed that nurses with a training duration of≥4 weeks had a 68%lower risk of postoperative infection in the patients under their charge(OR=0.32,95%CI 0.13–0.79).Conclusion:Structured training significantly enhances the perioperative blood glucose management ability of non-endocrinology specialist nurses and improves the clinical outcomes of patients.It is suggested that such training be incorporated into the compulsory content of nurses’continuing education,a regional homogeneous training and certification system be established,and patient-participatory evaluation tools and digital training platforms be developed to promote the continuous improvement of perioperative nursing quality. 展开更多
关键词 Perioperative diabetes Non-endocrinology specialist nurse Structured training
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Effect of gadolinium substitution on layer-structured Aurivillius Bi5Ti3FeO15 ceramics 认领 引用
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作者 Jelena Bobić Nikola Ilić +9 位作者 Robertas Grigalaitis Aleksandar Radojković Mirjana Vijatovic Petrović Sašo Gyergyek Ivan Stijepović Bojan Stojadinović Adis Džunuzović Algimantas Kežionis Tomas Salkus Juras Banys 《Journal of Rare Earths》 SCIE EI CAS CSCD 2026年第5期1583-1592,共10页
Lately,considerable attention has been given to developing magnetoelectric-active materials in microelectronics and spintronics.Motivated by that,the influence of partial substitution of isovalent rareearth gadolinium... Lately,considerable attention has been given to developing magnetoelectric-active materials in microelectronics and spintronics.Motivated by that,the influence of partial substitution of isovalent rareearth gadolinium ions for bismuth in multiferroic four-layered Aurivillius Bi5FeTi3O15(BFT)compounds to improve magnetic and electric properties is reported in this work.Polycrystalline ceramics of Gd-doped BFT according to formula Bi5-xGdxFeTi3O15(x=0,0.1,0.2,0.3,0.5,1.0)were prepared by conventional solid-state reaction.Crystal structure,phase purity,and structural evaluation were investigated via X-ray diffraction,Rietveld refinement,and Raman spectroscopy.Scanning electron microscopy(SEM)images show a significant influence of Gd content on microstructure,and it is found that x=0.3 is a critical amount of Gd that affects the grain growth dynamics.Ferroelectric measurements show unsaturated leaky hysteresis loops in all samples,still showing a slight improvement of ferroelectric properties by low-level Gd substitution and their breakdown strength is enhanced.Magnetic measurements confirm the paramagnetic nature of BFT ceramics with the nonlinear,hysteretic behavior at 5 K in the sample with the highest Gd substitution level.Dielectric properties were investigated in various temperatures(300-1000 K)and frequencies(1 Hz-1 MHz).At temperatures above 990 K,a jump in the real part of the dielectric permittivity,related to the ferroelectric phase transition,appears and moves slightly toward higher temperatures with the increase of Gd content. 展开更多
关键词 Aurivillius structure Gd3+doping Ferroelectrics Magnetic properties Dielectrics Rare earths
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Dual-regulation tailoring of tunnel-structured hexagonal tungsten oxide for high-performance ammonium-ion hybrid supercapacitors 认领 引用
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作者 Guochuang Tian Shuang Luo +4 位作者 Jinglv Feng Yina Xiang Hui Zhou Bingsuo Zou Jien Li 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第1期261-273,I0007,共13页
Ammonium-ion hybrid supercapacitors(A-HSCs)have emerged as promising candidates for next-generation energy storage owing to their inherent safety and environmental sustainability.Hexagonal tungsten oxide(h-WO3),wit... Ammonium-ion hybrid supercapacitors(A-HSCs)have emerged as promising candidates for next-generation energy storage owing to their inherent safety and environmental sustainability.Hexagonal tungsten oxide(h-WO3),with its well-defined tunnel structure,holds great promise as a negative electrode material for NH4+storage.However,its practical application is hindered by structural instability and poor intrinsic electrical conductivity.To address these challenges,a dual-regulation strategy is proposed,integrating molybdenum(Mo)doping and NH4+pre-intercalation to concurrently optimize the tunnel structure and electronic environment of h-WO3(Mo-NWO).Comprehensive experimental and theoretical analyses reveal that Mo doping narrows the bandgap of WO3and reduces the diffusion energy barrier,thereby accelerating NH4+adsorption and diffusion.Simultaneously,NH4+pre-intercalation stabilizes the tunnel framework via hydrogen bonding,ensuring structural reversibility.As expected,the Mo-NWO/AC electrode achieves a high areal capacitance of 13.6 F cm−2at 5 mA cm−2and retains 80.14%of its capacitance after 5000 cycles,demonstrating exceptional rate capability and cycling stability.Moreover,the assembled Mn3O4//Mo-NWO/AC device delivers a high energy density of 3.41 mWh cm−2and outstanding long-term stability(85.75%retention after 12,000 cycles).This work provides a viable strategy for designing high-performance NH4+storage materials and advances the development of sustainable energy storage systems. 展开更多
关键词 Ammonium-ion supercapacitors Mo-doping Hexagonal tungsten trioxide NH4+storage mechanism Structural stability
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Molecular structure and fatty acyl chain length-driven differences in digestive fate and intestinal cellular uptake:A comparative study of natural and structured triacylglycerols 认领 引用
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作者 Yandan Wang Qianqian Bi +4 位作者 Lei Wang Dan Yao Lingzhi Cheong Xingguo Wang Wei Wei 《Grain & Oil Science and Technology》 EI CAS 2026年第2期107-114,共8页
This study utilized a simulated in vitro dynamic digestion model for infants,combined with lipidomics technology and a Caco-2 cell model,to systematically investigate the effects of triacylglycerol molecular structure... This study utilized a simulated in vitro dynamic digestion model for infants,combined with lipidomics technology and a Caco-2 cell model,to systematically investigate the effects of triacylglycerol molecular structure and fatty acyl chain length in lipids on lipolysis and cellular uptake.The results indicated that medium-and long-chain triacylglycerols(MLCT)exhibited higher lipolysis efficiency during gastrointestinal digestion,with a greater final lipolysis degree and higher free fatty acid release compared to the physical mixture of MCT/LCT.Moreover,MLCT significantly promoted the expression of genes related to lipid uptake and transport(CD36,FABP4,and SLC27A4)in intestinal cells.The composition of the digestion products of MLCT was highly correlated with its initial triacylglycerol structure.While providing medium-chain fatty acids,it can effectively release long-chain fatty acids,which better meets the physiological needs of lipid digestion and absorption in infants.This study provides a scientific basis for the precise application of MLCT as a functional lipid in infant formula. 展开更多
关键词 Molecular structure Medium-and long-chain triacylglycerol Digestive fate Absorption Molecular species
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