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Research progress on bio-inspired composite structures based on ceramic 3D printing:a review 认领 引用
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作者 Dekun Kong Hailong Wu +4 位作者 Qingquan Zhang Dechao Lyu Yumeng Han Zhihui Zhang Luquan Ren 《International Journal of Extreme Manufacturing》 SCIE EI CAS CSCD 2026年第3期430-468,共39页
Ceramic materials demonstrate great application potential in multiple fields such as aerospace and biomedical engineering due to their excellent mechanical properties,high-temperature resistance,and good biocompatibil... Ceramic materials demonstrate great application potential in multiple fields such as aerospace and biomedical engineering due to their excellent mechanical properties,high-temperature resistance,and good biocompatibility,but their inherent brittleness and processing defects urgently need to be broken through.Inspired by the biological structures found in nature,the integration of biomimicry and additive manufacturing(AM)technologies offers a new pathway for the innovative design of high-performance ceramic materials.This article systematically reviews the fundamental principles and classifications of ceramic AM technology,focusing on six typical elements of biomimetic structural design:coaxial composite structures,surface reinforcement structures,layered composite structures,porous structures,composite multicomponent structures,and intelligent bionic structures.The review delves into their biomimetic principles,preparation strategies,performance advantages,and research progress.Research indicates that through multiscale topological design and functional integration,these structures can significantly enhance the mechanical properties and environmental adaptability of ceramics.Nevertheless,current technologies still face numerous challenges in balancing manufacturing precision and efficiency,controlling cracks and residual stresses caused by interface defects,ensuring long-term material stability under extreme environments,enhancing intelligent response capabilities,and guaranteeing process scalability and performance consistency in clinical applications.Future research should integrate multidisciplinary approaches to optimize structural design and dynamic response,transforming biomimetic ceramic materials from‘biological replication'to‘performance exceeding',thereby providing theoretical and technical support for the customized development of high-performance ceramic devices. 展开更多
关键词 bio-inspired composite structures ceramic additive manufacturing coaxial composite structures composite multicomponent structures intelligent bionic structures
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A novel Angle-Constrained Optimization method of Conformal Lattice Structures 认领 引用 被引量：1
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作者 Jun Yan Weibin Xu +2 位作者 Fuhao Wang Sixu Huo Kun Yan 《Computer Modeling in Engineering & Sciences》 SCIE EI 2026年第2期269-295,共27页
Conformal truss-like lattice structures face significant manufacturability challenges in additive manufac-turing due to overhang angle limitations.To address this problem,we propose a novel angle-constrained optimizat... Conformal truss-like lattice structures face significant manufacturability challenges in additive manufac-turing due to overhang angle limitations.To address this problem,we propose a novel angle-constrained optimization method grounded in the global adjustment of nodal coordinates.First,a build direction is selected to minimize the number of violating struts.Then,an angular-constraint matrix is assembled from strut direction vectors,and analytical sensitivities with respect to nodal coordinates are derived to enable efficient constrained optimization under nonlinear angular inequality constraints.Numerical studies on two complex curved-surface lattices demonstrate that all overhang violations are eliminated while only minor changes are induced in global stiffness and strength.In particular,the maximum displacement of an ergonomic insole varies by only 2.87%after optimization.The results confirm the method’s versatility and engineering robustness,providing a practical approach for additive manufacturing-oriented lattice structure design. 展开更多
关键词 Conformal lattice structures additive manufacturing structural optimization complex structures
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Multi-objective topology optimization for cutout design in deployable composite thin-walled structures 认领 引用
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作者 Hao JIN Ning AN +3 位作者 Qilong JIA Chun SHAO Xiaofei MA Jinxiong ZHOU 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2026年第1期674-694,共21页
Deployable Composite Thin-Walled Structures(DCTWS)are widely used in space applications due to their ability to compactly fold and self-deploy in orbit,enabled by cutouts.Cutout design is crucial for balancing structu... Deployable Composite Thin-Walled Structures(DCTWS)are widely used in space applications due to their ability to compactly fold and self-deploy in orbit,enabled by cutouts.Cutout design is crucial for balancing structural rigidity and flexibility,ensuring material integrity during large deformations,and providing adequate load-bearing capacity and stability once deployed.Most research has focused on optimizing cutout size and shape,while topology optimization offers a broader design space.However,the anisotropic properties of woven composite laminates,complex failure criteria,and multi-performance optimization needs have limited the exploration of topology optimization in this field.This work derives the sensitivities of bending stiffness,critical buckling load,and the failure index of woven composite materials with respect to element density,and formulates both single-objective and multi-objective topology optimization models using a linear weighted aggregation approach.The developed method was integrated with the commercial finite element software ABAQUS via a Python script,allowing efficient application to cutout design in various DCTWS configurations to maximize bending stiffness and critical buckling load under material failure constraints.Optimization of a classical tubular hinge resulted in improvements of 107.7%in bending stiffness and 420.5%in critical buckling load compared to level-set topology optimization results reported in the literature,validating the effectiveness of the approach.To facilitate future research and encourage the broader adoption of topology optimization techniques in DCTWS design,the source code for this work is made publicly available via a Git Hub link:http://gffzz188fe103f8f1460asu0nu0556noop6xqk.ffgz.tsg.suse.edu.cn/jinhao-ok1/Topo-for-DCTWS.git. 展开更多
关键词 Composite laminates Deployable structures Multi-objective optimization Thin-walled structures Topology optimization
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Realization of Polytype Heterostructures via Delicate Structural Transitions from a Doped Mott Insulator 认领 引用
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作者 Yanyan Geng Manyu Wang +9 位作者 Shumin Meng Shuo Mi Chang Li Huiji Hu Jianfeng Guo Rui Xu Fei Pang Wei Ji Weichang Zhou Zhihai Cheng 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第3期118-135,共18页
Transition-metal dichalcogenides hosting multiple competing structural and electronic phases are thus ideal platforms for constructing polytype heterostructures with emergent quantum properties.However,controlling pha... Transition-metal dichalcogenides hosting multiple competing structural and electronic phases are thus ideal platforms for constructing polytype heterostructures with emergent quantum properties.However,controlling phase transitions to form diverse heterostructures inside a single crystal remains challenging.In this study,we realize vertical/lateral polytype heterostructures in a hole-doped Mott insulator via thermal annealing-induced structural transitions.Raman spectroscopy,atomic force microscopy and scanning Kelvin probe force microscopy confirm the coexistence of T-H polytype heterostructures.Atomic-scale scanning tunneling microscopy/spectroscopy measurements reveal the transparent effect in 1H/1T vertical heterostructures,where positive bias voltage induces in a pronounced superposition of the√13×√13 CDW of the 1T-layer on the 1H-layer.By systematically comparing the 1T/1H and 1T/1T interfaces,we demonstrate that the metallic 1H-layer induces a Coulomb screening effect on the 1T-layer,suppressing the formation of CDW domain walls and forming more ordered electronic states.These results clarify the interfacial coupling between distinct quantum many-body phases and establish a controllable pathway for constructing two-dimensional polytype heterostructures with tunable electronic properties. 展开更多
关键词 Raman spectroscopy polytype heterostructures structural electronic phases spectroscopyatomic force microscopy thermal annealing structural transitions emergent quantum propertieshowevercontrolling phase transitions constructing polytype heterostructures
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Response of wind turbine loads to multi-scale turbulent structures:a study based on turbulence signals observed in the field 认领 引用 被引量：2
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作者 Yongfen Chai Yan Wang +2 位作者 Haolin Li Jingjing Zhang Jian Zheng 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2026年第2期593-609,共17页
Accurately assessing the impact of turbulence structures on load fluctuation is crucial for the long-term stable operation of wind turbines.Based on turbulence signals observed at the Qingtu Lake Observed Array in Chi... Accurately assessing the impact of turbulence structures on load fluctuation is crucial for the long-term stable operation of wind turbines.Based on turbulence signals observed at the Qingtu Lake Observed Array in China,the aerodynamic load responses of the wind turbine to different turbulence scales are quantitatively analyzed in this study.The results indicate that very large-scale motions(VLSMs)are associated with significant load fluctuations due to its low frequency and high energy characteristics,increasing the risk of extreme loads.Large-scale motions coupled with the natural frequency of wind turbines in the medium frequency range,result in resonance phenomena.Small-scale motions,due to their high-frequency rapid vibration characteristics,cause instantaneous oscillations in wind turbine loads.Furthermore,correlation analysis indicates that the flapwise moment and thrust are most sensitive to VLSMs,while the edgewise moment is less affected by the scale characteristics.It is worth noting that this study is the first to explore the modulation effects of different scales of turbulent structures on the amplitude of wind turbine load fluctuation.It was found that turbulent structures exceeding a scale of 3δ have the most significant impact on modulating the load amplitudes,where δ is the boundary layer thickness,which is 99% of the flow velocity outside the boundary layer.These findings contribute to the enhancement of understanding regarding the load response of wind turbines in multi-scale turbulent environments and provide important references for the optimization of wind turbine design and load control. 展开更多
关键词 Multi-scale turbulent structures Wind turbine load response Field observation experiment Wavelet analyze
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Quantum computing-enhanced topology optimization with stress constraints for truss structures 认领 引用 被引量：2
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作者 Yan Wang Dixiong Yang +1 位作者 Zhenzeng Lei Guohai Chen 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2026年第6期41-57,共17页
Quantum computing,leveraging the properties of quantum physics such as quantum superposition and entanglement,possesses the potential for exponential acceleration compared to classical computing.It can significantly e... Quantum computing,leveraging the properties of quantum physics such as quantum superposition and entanglement,possesses the potential for exponential acceleration compared to classical computing.It can significantly enhance solution efficiency in topology optimization and effectively avoid the entrapment in local optima.This paper proposes a hybrid classical-quantum computing framework to solve the stress-constrained topology optimization problem for truss structures.Initially,structural analyses are performed on a classical computer to determine the stresses of truss members.Then,the optimization problem is formulated through incremental updates of member cross-sectional areas to make it compatible with a quantum annealer.The update strategy consists of a directional-control function and a magnitude-control function.By embedding stress constraints directly into the directional-control function,the original optimization problem is reformulated as a quadratic unconstrained binary optimization model suitable for quantum annealing.To realize a balance between solution accuracy and iteration efficiency,a dynamic strategy for adjusting the magnitude of area increments is proposed.Thus,the quantum annealer can effectively achieve the optimal solutions.When only the access time of the quantum processing unit is considered,the results from 2D and 3D examples of truss topology optimization validate the effectiveness of the proposed framework,and demonstrate the great potential of quantum computing in structural optimization. 展开更多
关键词 Topology optimization Truss structures Quantum computing Quantum annealing algorithm Quadratic unconstrained binary optimization problem
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Energy absorption characteristics of additively manufactured sea sponge-inspired lattice structures under low-velocity impact loading 认领 引用
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作者 J Jefferson Andrew Jabir Ubaid +4 位作者 Mohammed Ayaz Uddin Omar Waqas Saadi Kamran Ahmed Khan Rehan Umer Andreas Schiffer 《Defence Technology（防务技术）》 SCIE EI CAS CSCD 2026年第1期118-129,共12页
Low-velocity impact tests are carried out to explore the energy absorption characteristics of bio-inspired lattices,mimicking the architecture of the marine sponge organism Euplectella aspergillum.These sea sponge-ins... Low-velocity impact tests are carried out to explore the energy absorption characteristics of bio-inspired lattices,mimicking the architecture of the marine sponge organism Euplectella aspergillum.These sea sponge-inspired lattice structures feature a square-grid 2D lattice with double diagonal bracings and are additively manufactured via digital light processing(DLP).The collapse strength and energy absorption capacity of sea sponge lattice structures are evaluated under various impact conditions and are compared to those of their constituent square-grid and double diagonal lattices.This study demonstrates that sea sponge lattices can achieve an 11-fold increase in energy absorption compared to the square-grid lattice,due to the stabilizing effect of the double diagonal bracings prompting the structure to collapse layer-bylayer under impact.By adjusting the thickness ratio in the sea sponge lattice,up to 76.7%increment in energy absorption is attained.It is also shown that sea-sponge lattices outperform well-established energy-absorbing materials of equal weight,such as hexagonal honeycombs,confirming their significant potential for impact mitigation.Additionally,this research highlights the enhancements in energy absorption achieved by adding a small amount(0.015 phr)of Multi-Walled Carbon Nanotubes(MWCNTs)to the photocurable resin,thus unlocking new possibilities for the design of innovative lightweight structures with multifunctional attributes. 展开更多
关键词 Sea sponge-inspired lattice structures Additive manufacturing Energy absorption Low-velocity impact Lattice structure Nanocomposite
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Periosteal mitochondria DNA structures drive agingassociated poor skeletal repair 认领 引用 被引量：1
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作者 Yanlin Wu Chuyi Han +9 位作者 Xue Yang Yitian Wang Weidong Tian Quan Yuan Hui Wang Haisheng Wang Bei Yin Ling Ye Feifei Li Fanyuan Yu 《Bone Research》 SCIE CAS CSCD 2026年第3期819-831,共13页
Insufficient skeletal repair is the primary threat of health span and lifespan in elders with increasingly vast global burden;yet,to date,the knowledge of resolving this crisis remains limited.In this study,we address... Insufficient skeletal repair is the primary threat of health span and lifespan in elders with increasingly vast global burden;yet,to date,the knowledge of resolving this crisis remains limited.In this study,we addressed the specific mechanisms underlying agingassociated poor bone repair,which are driven by the mitochondrial DNA structures mitochondrial G-quadruplex(mtG4).We found that mtG4 is spatiotemporal-wisely accumulated within Pdgfra+periosteal mesenchymal stromal/stem cells(PPM)both in healthy and premature aging,which substantially increases cellular senescence and the degenerative alterations of PPM.By utilizing transgenic lineage tracking,PPM organoids formation,mitochondrial transgenic mutation,organoids transplantation,and serial cellular molecular investigations,we reveal that mtG4 in PPM restricts vital mitochondrial genes’transcription to cause mitochondrial dysfunction,which utterly leads to severe mitophagy and cell senescence.These senescent PPM demonstrates impaired stemness and disrupted fate determination,finally phenocopying aging-associated poor bone repair.This study decodes the mitochondrial genomic reasons for insufficient bone repair during aging,which offers insights for developing cell-type-and disease-specific senolytic therapies in the future. 展开更多
关键词 bone repair mitochondrial G quadruplex mitochondrial DNA periosteal mesenchymal stem cells mitochondrial dysfunction insufficient skeletal repair mitochondrial dna structures cellular senescence
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Germinal Center–Like Tertiary Lymphoid Structures Mark Immune Responsiveness and Enable Checkpoint Immunotherapy in Bladder Cancer 认领 引用
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作者 Zhihao Yin Xi Zhen +13 位作者 Haonan Li Haiqiang Duan Xiaowei Hu Tianxi Yu Qing Shi Ziyi Liu Yaowei Li Peng Zhang Peng Dai Meihui Zhao Ziqi Wang Changfu Li Di Wang Zhichao Tong 《Oncology Research》 SCIE 2026年第7期595-624,共30页
Backgrounds:Tertiary lymphoid structures(TLSs)are increasingly recognized as modulators of anti-tumor immunity,yet their clinical relevance in bladder cancer remains incompletely understood,partly owing to heterogenei... Backgrounds:Tertiary lymphoid structures(TLSs)are increasingly recognized as modulators of anti-tumor immunity,yet their clinical relevance in bladder cancer remains incompletely understood,partly owing to heterogeneity in their maturation states.Here,we demonstrate that germinal center(GC)–like TLS maturity,rather than TLS presence alone,is closely associated with immune activation and therapeutic response to Programmed Death-Ligand 1(PD-L1)blockade in bladder cancer.The objective of this study was to systematically investigate the clinical significance,biological function,and therapeutic potential of tertiary lymphoid structure(TLS)maturation in bladder cancer.Specifically,we aimed to determine whether GC-like TLS maturity provides prognostic and predictive value beyond TLS presence alone,to elucidate the immune programs and tumor microenvironment remodeling associated with TLS maturation,and to explore whether TLS maturation can be therapeutically induced to enhance responsiveness to PD-L1 blockade.Methods:We performed an integrative analysis combining multi-cohort transcriptomics,spatially resolved histopathology,single-cell RNA sequencing,and functional murine experiments.TLS maturation states were defined using gene-expression–based GC-like TLS signatures and validated through multiplex immunohistochemistry.Clinical relevance was assessed in public immunotherapy cohorts and an independent neoadjuvant PD-L1–treated muscle-invasive bladder cancer(MIBC)cohort.Tumor immune microenvironment remodeling and chemokine-mediated cellular crosstalk were analyzed using deconvolution,Weighted Gene Co-expression Network Analysis(WGCNA),and CellChat.The therapeutic inducibility of TLS maturation was examined using a lymphotoxin-βreceptor(LTβR)agonist in combination with PD-L1 blockade in a syngeneic bladder cancer model.Results:Across multiple transcriptomic cohorts,tumors enriched for GC-like TLS signatures exhibited significantly prolonged survival and higher objective response rates to anti–PD-L1 therapy,whereas less mature TLS phenotypes showed no consistent association with clinical association.These observations were independently validated in a neoadjuvant PD-L1–treated muscle-invasive bladder cancer cohort,in which high mature TLS density was associated with major pathological response and prolonged event-free survival,outperforming PD-L1 expression.Integrative histopathological and transcriptomic analyses indicated that GC formation marks a functional transition linking humoral immune programs with cytotoxic effector activity and shaping a memory-prone,pro-inflammatory tumor immune microenvironment.Chemokine signaling via the CC chemokine ligand 21(CCL21)–C-C chemokine receptor type 7(CCR7)and C-X-C motif chemokine ligand 12(CXCL12)–C-X-C chemokine receptor type 4(CXCR4)axes was strongly associated with TLS maturation and spatial organization.Finally,in a syngeneic bladder cancer model,pharmacological activation of lymphotoxin-βreceptor signaling promoted TLS maturation and enhanced the antitumor efficacy of PD-L1 blockade.Conclusions:Together,these findings suggest that GC-like TLS maturity represents a clinically relevant biomarker and a potential therapeutic entry point for precision immunotherapy in bladder cancer.Therapeutic strategies that promote TLS maturation may convert immune-cold tumors into checkpoint-responsive states,providing a mechanistically grounded precision immunotherapy approach. 展开更多
关键词 Tertiary lymphoid structures bladder cancer germinal center(GC)–like tertiary lymphoid structure tumor microenvironment programmed death-ligand 1
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Fabrication and performance analysis of TC4 pyramidal lattice structures via alternating pin-press and brazing:A study on truss angle optimization 认领 引用
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作者 Hui WANG Rui WANG +2 位作者 Zhongxu LIU Xingrong CHU Kongxun ZHAO 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2026年第7期630-644,共15页
The 3D lattice structure is increasingly recognized in various applications due to its high porosity and excellent mechanical properties.However,fabricating these complex structures,especially using low-plasticity mat... The 3D lattice structure is increasingly recognized in various applications due to its high porosity and excellent mechanical properties.However,fabricating these complex structures,especially using low-plasticity materials like titanium alloys,has posed significant challenges.The alternating pin-press method was successfully applied to produce titanium pyramidal 3D lattice core based on the high temperature forming mold.A brazing fixture was designed to protect the core during brazing,resulting in fully functional TC4 pyramidal 3D lattice structures.The fabrication structure achieved a compressive strength of 2.96 MPa and a relative compressive strength of108.65 MPa at a relative density of 0.0272.Metallographic analysis revealed that forming at 800℃resulted in equiaxedαphase with dispersedβphase,while brazing at 980℃,near theβ-transformation temperature,led to coarseαand strip-likeβphases.Experimental tests and finite element simulations demonstrated the variation in truss rod stiffness constant with geometry,identifying optimal truss angles of 33.4°for maximum flatwise compressive strength of 3.7 MPa and 44.8°for maximum relative compressive strength of 163.7 MPa.These findings offer valuable insights for the design of high-performance,low-density lattice structures in aerospace and related engineering fields. 展开更多
关键词 Compression testing Finite element method Lattice structures Optimization Titanium alloy
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Multi-order evolution of lacustrine shale sedimentary structures in Qingshankou Formation of Songliao Basin,NE China,and its implications 认领 引用
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作者 Ke-Rui Wu Yu Sun +4 位作者 Jie Zhou Da-Ming Yang Bai-Quan Yan Li-Min Yu Tao Yu 《Petroleum Science》 SCIE EI CAS CSCD 2026年第5期2467-2484,共18页
Fine-grained sedimentology is crucial to understanding paleoclimatology and unconventional oil and gassedimentology.However,the controllingfactors andevolutionary patterns ofsedimentarystructuresin shale-the most fund... Fine-grained sedimentology is crucial to understanding paleoclimatology and unconventional oil and gassedimentology.However,the controllingfactors andevolutionary patterns ofsedimentarystructuresin shale-the most fundamental andwidespread featuresof fine-grained sediments-remain enigmatic.In this study,five types of organic-rich lacustrine shale sedimentary structures were identified in the lower Qingshankou Formation in Well C41-70 in the Songliao Basin:massive structures,layered structures,weakly laminated structures,laminated structures,and event sediment structures.Furthermore,Milankovitch cycles were identified using the gamma-ray logging curve of Well C41-70,and an astronomical time scale(ATs)was established.The frequencyand combinationpatterns of different types of sedimentary structures,referred to as"sedimentary structure evolution sets(SSESs)",exhibit covariations at multiple scales with changes in lake levels,short eccentricity,and precession.This suggests that lake levels and orbital cycles are the multi-order controls on SSESs variations.Crosswell correlations of geochemical proxies based on the ATSs further indicate that shifts in SSESs coincide with changes in the lacustrine sedimentary environment.Notably,marine incursion events appear to have induced significant variations in both the sedimentary environment and the SSESs.These findings implythat SSESs may preserve more information on paleoclimatic-paleoenvironmental changes and geological events,which challenges the conventional wisdom of strong heterogeneity and weak distribution patterns in sedimentary structures withinshale reservoirs.Furthermore,SSESs not only provide critical references for optimizing fracturing process parameters in lacustrine shale development,but also help reveal the dilution of organic matter during deposition and elucidate the genesis of TOC heterogeneity.This demonstrates the significant value of depiction and analysis of sedimentary structures for shale oil and gas exploration and development. 展开更多
关键词 Lacustrine shale Sedimentary structures Orbital cycle Lake levels Qingshankou Formation
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Rigid urea-based structures drive analysis of chiral amino acids 认领 引用
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作者 Yanhui Zhong Peisi Xie +8 位作者 Chengyi Xie Lei Guo Weiwei Chen Shuyi Wang Xiaoxiao Wang Fuyue Wang Zian Lin Gongke Li Zongwei Cai 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第2期735-740,共6页
Chiral amino acids(AAs)serve as essential building blocks of proteins and play vital physiological roles in living organisms.To achieve accurate,rapid,and high-throughput analysis of chiral AAs,this work proposed a me... Chiral amino acids(AAs)serve as essential building blocks of proteins and play vital physiological roles in living organisms.To achieve accurate,rapid,and high-throughput analysis of chiral AAs,this work proposed a methylbenzyl isocyanate(MBIC)derivatization strategy coupled with ultra-high performance liquid chromatography-mass spectrometry or trapped ion mobility spectrometry-mass spectrometry.The integration of a chiral carbon atom with a rigid urea-based structure can significantly enhance the separation of chiral MBIC-labeled AA enantiomers.This phenomenon can be attributed to the labeled l-AAs allow the carboxyl group to form intramolecular hydrogen bonds with the amino group in the rigid urea-based structure,whereas labeled d-AAs are unable to form such bonds.The method based on MBIC derivatization coupled with ultra-performance liquid chromatography-tandem mass spectrometry achieved simultaneous separation of 19 pairs of chiral AAs using only a C18 column within 30 min,enabling quantitatively detect twelve types of chiral AAs in the serum of healthy humans and Parkinson's patients.The distribution of twenty-four chiral AAs is observed in mouse brain using MBIC labeling-based matrix-assisted laser desorption/ionization-trapped ion mobility spectrometry-mass spectrometry imaging without prior separation.Our work elucidates the principles governing the separation of chiral AAs using derivatization methods,providing valuable guidance for the separation of chiral compounds. 展开更多
关键词 Chiral amino acids Rigid urea-based structures Intramolecular hydrogen bonds UPLC-MS MALDI-TIMS-MS
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Preface to the Focus Issue on Pathways to Advanced Flexible Electronics:Materials,Structures,and Systems 认领 引用
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作者 Desheng Kong Rongrong Bao +2 位作者 La Li Chunfeng Wang Yue Liu 《Journal of Semiconductors》 EI CAS CSCD 2026年第8期1-4,共4页
Flexible electronics have established themselves as a key frontier in next-generation electronic technologies,driving sustained breakthroughs that span from material design and structural innovation to system-level in... Flexible electronics have established themselves as a key frontier in next-generation electronic technologies,driving sustained breakthroughs that span from material design and structural innovation to system-level integration. 展开更多
关键词 innovation advanced electronics materials systems flexible electronics structures integration material design structural innovation
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Achieving exceptional strength-ductility synergy in additively manufactured Hastelloy X superalloys by stabilizing cellular structures via Ta addition 认领 引用
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作者 Nan Chen Kefu Gan +4 位作者 Dan Zheng Pengda Niu Haoping Peng Tiechui Yuan Ruidi Li 《International Journal of Extreme Manufacturing》 SCIE EI CAS CSCD 2026年第2期591-619,共29页
Additive manufacturing of Hastelloy X superalloys remains challenges for practical aerospace applications due to the inadequate mechanical property at both ambient and high temperatures.To this end,this work proposes ... Additive manufacturing of Hastelloy X superalloys remains challenges for practical aerospace applications due to the inadequate mechanical property at both ambient and high temperatures.To this end,this work proposes a novel Ta-modified strategy manipulating elemental segregation to stabilize cellular structures,thereby obtaining an outstanding combination between strength and ductility across a wide temperature regime.In particular,the tensile strength and elongation of Ta-modified superalloys can reach up to 1214 MPa and 28.4%,respectively,highly increased by 47%and 10%compared to original Hastelloy X superalloys at 25℃.Meanwhile,the tensile strength and elongation at 650℃significantly increase to 843 MPa and 26.8%respectively,38%and 150%stronger than their counterparts of the original Ta-free Hastelloy X superalloys at identical conditions.Microstructural observations reveal that prominent local segregation of Ta/Mo elements and in situ MC precipitates along cellular boundaries synergistically enhanced the stability of cellular structures.The stabilized cellular structures serve as continuous and skeleton-like networks during deformation,synergistically contributing to outstanding ductility and enhanced mechanical strength,as well as sustained strain-hardening ability.The present work provides new insights into an efficient alloy design method for additively manufactured nickel-based superalloys with outstanding mechanical property within a wide temperature regime. 展开更多
关键词 additive manufacturing Hastelloy X superalloys cellular structures elemental segregation strength-ductility synergy
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Revealing the dominant influenceof joints:Soil-structurecomponent-joint adaptivity for prefabricated underground structures 认领 引用
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作者 Tong Qiu Kaibin Ye +3 位作者 Xiangsheng Chen Tianjun Wu Wei Rao Xiaohua Bao 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2026年第7期5468-5488,共21页
Compared to the traditional cast-in-situ technique,the novel prefabricated underground structure(PUS)employs machinery excavation and assembly.Notably,the PUS assembly system undergoes multi-level force transmission t... Compared to the traditional cast-in-situ technique,the novel prefabricated underground structure(PUS)employs machinery excavation and assembly.Notably,the PUS assembly system undergoes multi-level force transmission through soil,structure,component,and joint interactions.This transmission mechanism remains inadequately understood,consequently posing frequent instability risks during PUS construction.Hereby,this study foremost addresses this problem for multi-level information modeling and planning for PUS under joint principal control.Three modules of numerical modeling,design theory and adaptive planning were constructed and integrated into the Soil-structure-component-joint Adaptive Planning Model(SAPM).Through a real-project application of SAPM,key insights are as follows:(1)SAPM achieves multi-level information adaptivity by planning the joint properties,which mitigates the soil-structure interaction effect of main and secondary structures by 18% and 63%,respectively.(2)Different joints and components may not achieve optimum solutions with uniform joint properties.Top,bottom and midslab joints achieve multi-level information adaptivity only when their respective joint stiffness factors are 0.90,0.61 and 0.65.(3)The use of semi-rigid joints in PUS has multiple advantages over the common cast-in-situ rigid joints.The semi-rigid scheme reduces ring assembly time and cost by approximately 40%and 20%,respectively,compared to hinged and rigid joint schemes.The research results provide a theoretical and instrumental basis for the safe construction of PUS in complex urban and geotechnical environments. 展开更多
关键词 Prefabricated underground structures Soil-structure-component-joint adaptivity Multi-level information planning Automatic modeling Semi-rigid joint
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Investigation of dynamic seismic response in liquid-containing structures for nuclear reactors using the hybrid Eulerian-Lagrangian method 认领 引用
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作者 Shi-Lin Chen Qing-Xi Yang +3 位作者 Qing-Zhou Yu Hao Xu Jian Chen Zhao-Xi Chen 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2026年第6期159-177,共19页
Liquid-containing structures,including steam generators,water-cooling systems,in-containment refueling water storage tanks,suppression tanks,and tritiated water storage facilities,are integral components of nuclear re... Liquid-containing structures,including steam generators,water-cooling systems,in-containment refueling water storage tanks,suppression tanks,and tritiated water storage facilities,are integral components of nuclear reactor systems and are crucial for ensuring operational safety and stability.Traditional seismic analysis methods often struggle to accurately predict the dynamic behavior of such structures,particularly under transient events such as earthquakes.This paper presents a comprehensive study that applies the hybrid Eulerian-Lagrangian method to analyze fluid-structure interactions within these structures.The efficacy of this method for capturing the complex dynamics induced by liquid movement is demonstrated through simulations conducted primarily in a vertical storage tank.A comparative analysis with traditional response-spectrum analysis methods underscores the limitations of conventional approaches,particularly in terms of accounting for nonlinear free-surface motions and dynamic velocity distributions.The structural response of the tank containing liquid calculated using the hybrid Eulerian-Lagrangian method is approximately twice that calculated using the response-spectrum method,whereas in the case of a tank without liquid,the response is the same.Additionally,a high dynamic stress distribution exists near the liquid level of the structure.This study addresses the intricate interplay between structural components and fluid dynamics,thereby extrapolating insights from tanks to enhance safety protocols and design considerations for future nuclear devices. 展开更多
关键词 Liquid-containing structures Nuclear reactors Seismic analysis methods Hybrid Euler-Lagrangian method Complex dynamics
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Durian-Shell-Inspired Biostructures for Energy Absorption and Impact Protection 认领 引用
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作者 Bin Xu Wenjun Bai 《Journal of Bionic Engineering》 SCIE EI CSCD 2026年第3期1697-1718,共22页
This study presents a novel bionic thin-walled tube with a complex cross-section(BS),inspired by the protective thorns of the durian fruit,to enhance crashworthiness and impact protection.The spiky durian shell dissip... This study presents a novel bionic thin-walled tube with a complex cross-section(BS),inspired by the protective thorns of the durian fruit,to enhance crashworthiness and impact protection.The spiky durian shell dissipates impact energy and shields non-impact regions,motivating the biomimetic design.Quasi-static compression tests demonstrate that BS5 achieves a 9%higher Specific Energy Absorption(SEA)than Sinusoidal corrugated tubes(SIN)and 22%higher than Double Corrugated Tapered tubes(DT).The three BS configurations also exhibit 31-60%higher Crushing Force Efficiency(CFE)while reducing Undulation of Load-carrying Capacity(ULC)by 26-74%,resulting in smoother force-displacement responses.Bulkheads provide no advantage in axial energy absorption;in fact,BS5 without bulkhead achieves a 33%higher SEA.Structures with polygonal mid-sections show lower imperfection sensitivity than square ones,and when the side length-to-thickness ratio is preserved,larger-scale structures retain stable absorption efficiency,indicating potential for protective applications such as shelters.By integrating two antiprism units,BS5 delivers 45%higher SEA,71%higher CFE,and 35%lower ULC than a single antiprism tube.A calibrated linear elastic constitutive model accurately predicts crushing behavior under quasi-static loading.Unlike SIN and DT double-layer structures that collapse in thick-walled modes,deformation analysis reveals that double-layer BSs possess an optimal interlayer spacing to avoid such degeneration,exhibit a more complex plastic hinge evolution mechanism and higher energy absorption efficiency.Low-velocity drop-weight tests confirm superior impact resistance of BSs compared with SIN and DT,while high-velocity simulations reveal only a 21%increase in Initial Peak Crushing Force(IPCF)from 5 to 50 m/s,demonstrating robust dynamic performance.Overall,the durian-inspired BS tubes exhibit excellent crashworthiness and strong potential for advanced defense and engineering impact protection applications. 展开更多
关键词 Bio-inspired structures Double layered thin-walled tube Crashworthiness Impact protection Additive manufacturing
Boosting the intermittent alkaline seawater electrolysis stability up to 10,000h via in-situ formation of dynamically passivating structures 认领 引用
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作者 Bo Chen Peiyu Duan +1 位作者 Ying Zhang Lianhui Wang 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第1期4-6,共3页
With the in-depth implementation of sustainable development strategies,hydrogen energy as a clean energy source is receiving increasing attention[1,2].Among the various methods of hydrogen production,the electrocataly... With the in-depth implementation of sustainable development strategies,hydrogen energy as a clean energy source is receiving increasing attention[1,2].Among the various methods of hydrogen production,the electrocatalytic decomposition of abundant seawater into hydrogen utilizing renewable energy has emerged as a green and promising approach.However,natural seawater contains complex components,such as halide ions,which lead to the corrosion of catalysts or the occurrence of competitive side reactions during the electrolysis process[3]. 展开更多
关键词 intermittent alkaline seawater electrolysis electrocatalytic decomposition renewable energy clean energy source sustainable development strategies halide ionswhich sustainable development strategieshydrogen energy dynamically passivating structures
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Electric-Field-Driven Generative Nanoimprinting for Tilted Metasurface Nanostructures 认领 引用 被引量：1
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作者 Yu Fan Chunhui Wang +6 位作者 Hongmiao Tian Xiaoming Chen Ben QLi Zhaomin Wang Xiangming Li Xiaoliang Chen Jinyou Shao 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第1期290-305,共16页
Tilted metasurface nanostructures,with excellent physical properties and enormous application potential,pose an urgent need for manufacturing methods.Here,electric-field-driven generative-nanoimprinting technique is p... Tilted metasurface nanostructures,with excellent physical properties and enormous application potential,pose an urgent need for manufacturing methods.Here,electric-field-driven generative-nanoimprinting technique is proposed.The electric field applied between the template and the substrate drives the contact,tilting,filling,and holding processes.By accurately controlling the introduced included angle between the flexible template and the substrate,tilted nanostructures with a controllable angle are imprinted onto the substrate,although they are vertical on the template.By flexibly adjusting the electric field intensity and the included angle,large-area uniform-tilted,gradient-tilted,and high-angle-tilted nanostructures are fabricated.In contrast to traditional replication,the morphology of the nanoimprinting structure is extended to customized control.This work provides a cost-effective,efficient,and versatile technology for the fabrication of various large-area tilted metasurface structures.As an illustration,a tilted nanograting with a high coupling efficiency is fabricated and integrated into augmented reality displays,demonstrating superior imaging quality. 展开更多
关键词 Generative nanoimprinting Electric field assistance Tilted metasurface structures Large-area fabrication
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Optimization of Truss Structures Using Nature-Inspired Algorithms with Frequency and Stress Constraints 认领 引用 被引量：1
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作者 Sanjog Chhetri Sapkota Liborio Cavaleri +3 位作者 Ajaya Khatri Siddhi Pandey Satish Paudel Panagiotis G.Asteris 《Computer Modeling in Engineering & Sciences》 SCIE EI 2026年第1期436-464,共29页
Optimization is the key to obtaining efficient utilization of resources in structural design.Due to the complex nature of truss systems,this study presents a method based on metaheuristic modelling that minimises stru... Optimization is the key to obtaining efficient utilization of resources in structural design.Due to the complex nature of truss systems,this study presents a method based on metaheuristic modelling that minimises structural weight under stress and frequency constraints.Two new algorithms,the Red Kite Optimization Algorithm(ROA)and Secretary Bird Optimization Algorithm(SBOA),are utilized on five benchmark trusses with 10,18,37,72,and 200-bar trusses.Both algorithms are evaluated against benchmarks in the literature.The results indicate that SBOA always reaches a lighter optimal.Designs with reducing structural weight ranging from 0.02%to 0.15%compared to ROA,and up to 6%–8%as compared to conventional algorithms.In addition,SBOA can achieve 15%–20%faster convergence speed and 10%–18%reduction in computational time with a smaller standard deviation over independent runs,which demonstrates its robustness and reliability.It is indicated that the adaptive exploration mechanism of SBOA,especially its Levy flight–based search strategy,can obviously improve optimization performance for low-and high-dimensional trusses.The research has implications in the context of promoting bio-inspired optimization techniques by demonstrating the viability of SBOA,a reliable model for large-scale structural design that provides significant enhancements in performance and convergence behavior. 展开更多
关键词 Optimization truss structures nature-inspired algorithms meta-heuristic algorithms red kite opti-mization algorithm secretary bird optimization algorithm
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