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An optical carbon nanotube fibre probe for measurement of nano structures with large aspect ratio

Nano Research 2025年第3期18卷 436-443页

作者： Weihao Tao Shuhao Zhao Hanjin Dong Ze Zhang Peirui Ji Shenghan Qin Wenbo Hu Jinlong Zhu Renjie Zhou Shuming Yang State Key Laboratory for Manufacturing Systems Engineering Xi’an Jiaotong UniversityXi’an 710049China State Key Laboratory of Intelligent Manufacturing Equipment and Technology Huazhong University of Science and TechnologyWuhan 430074China Department of Biomedical Engineering The Chinese University of Hong KongHong KongChina

With the development of imaging and measurement technologies,scanning near-field optical microscopy(SNOM)has achieved high signal-to-noise *** resolution of a fibre probe-based SNOM system is capable of reaching 10 ***,SNOM applications are presently constrained to the measurement of near-field optical information to relatively straightforward structures,including quantum dots,carbon nanotubes,graphene,and so *** geometry of conventional fibre probes,with tips at an angle of 30°-60°,presents a challenge for accurately imaging complex surface *** paper proposes a carbon nanotube composite fibre probe(CNT-FP)with a large aspect *** key point is that a carbon nanotube bundle is composited at the tip of conventional surface plasmon polaritons fibre probes(SPPs-FP),which are the fibre probes coated with gold film to excite the *** coupling,propagation,and focusing effects of SPPs on the carbon nanotube bundle are ***-FPs have been fabricated and applied to measure a grating with the depth of 400 nm and the width of 400 *** experimental results show that the measurement accuracy and imaging quality of CNT-FP are nearly one order of magnitude higher than that of conventional SPPs-FP,as evidenced by evaluation criteria such as line roughness and volatility ***,it achieves an optical resolution of 72.1 nm in the measurements of a nano structure with large aspect *** provides an effective solution of measuring structures with larger aspect ratios.

关键词： carbon nanotubes fibre optic probes surface plasmon polaritons nano-focusing large aspect ratio

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Space charge characteristics and dielectric properties of PANI/PP-g-MAH/PP ternary composite

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High Voltage 2025年第1期10卷 178-185页

作者： Guochang Li Tianzhen Liu Zhenlu Gu Xiaolong Chen Beibei Sun Yuanwei Zhu Shengtao Li Yanhui Wei College of Materials Science and Engineering Qingdao University of Science and TechnologyQingdaoChina State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong UniversityXi'anChina

Space charge accumulation in polypropylene materials for direct current capacitor will accelerate the ageing of the materials,resulting in the degradation of their insulation ***,it will also affect the dielectric properties of the capacitor in a long *** this paper,a ternary composite of polyaniline(PANI)/maleic anhydride functionalised PP(PP-g-MAH)/polypropylene(PP)based on the PANI@dopamine(PDA)coating structure is constructed from two perspectives of PP matrix grafting and PANI nano *** method takes advantage of the high permittivity and good compatibility of PANI to improve the relative dielectric constant of the composite while introducing deep traps inside the composite to inhibit space charge accumulation *** experimental results show that with the increase in PANI content,the maximum relative permittivity can be increased by 62%.The addition of the appropriate amount of PANI can effectively inhibit the space charge *** relative dielectric constant of the composite decreases significantly due to the heteropolar space *** relative dielectric constant of the modified polyaniline composites decreased *** reduction rate decreased from 38%before modification to 12%after *** work has certain guiding significance for solving space charge problem of direct current capacitor.

关键词： composite composites dielectric

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Revealing the thermal stability of sodium-ion battery from material to cell level using combined thermal-gas analysis

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Journal of Energy Chemistry 2025年第4期103卷 838-849页

作者： Anqi Teng Yue Zhang Lihua Jiang Yue Zhang Hongbin Dang Chenchen Wang Zheng Fang Yong Liu Xuefeng Wang Huang Li Wenxin Mei Qingsong Wang State Key Laboratory of Fire Science University of Science and Technology of China College of Safety and Environmental Engineering Shandong University of Science and Technology Anhui Provincial Emergency Management Research Institute Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences

The future large-scale application of sodium-ion batteries（SIBs） is inseparable from their excellent electrochemical performance and reliable safety *** present,there are few studies focusing on their safety *** analysis of thermal stability and structural changes within a single material cannot systematically describe the complex interplay of components within the battery system during the thermal runaway ***,the reaction between the battery materials themselves and their counterparts within the system can stimulate more intense exothermic behavior,thereby affecting the safety of the entire battery ***,this study delved into the thermal generation and gas evolution characteristics of the positive electrode(NaxNi1/3Fe1/3Mn1/3O2,NFM111) and the negative electrode（hard carbon,HC） in SIBs,utilizing various material *** the integration of microscopic and macroscopic characterization techniques,the underlying reaction mechanisms of the positive and negative electrode materials within the battery during the heating process were *** important results are derived from this study:（Ⅰ） The instability of the solid electrolyte interphase（SEI） leads to its decomposition at temperatures below 100℃,followed by extensive decomposition within the range of 100-150 ℃,yielding heat and the formation of inorganic compounds,such as Na2CO3and Na2O;（Ⅱ） The reaction between NFM111 and the electrolyte constitutes the primary exothermic event during thermal abuse,with a discernible reaction also occurring between sodium metal and the electrolyte throughout the heating process;（Ⅲ） The heat production and gas generation behaviors of multi-component reactions do not exhibit complete correlation,and the occurrence of gas production does not necessarily coincide with thermal *** results presented in this study can provide useful guidance for the safety improvement of SIBs.

关键词： Decomposition Gas generation Sodium-ion battery safety Thermal stability

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Long term ingestion of dietary ALEs induces metabolic disorders in mice by inducing gut dysbiosis and inhibiting AMPK/SIRT1 pathway

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Food science and Human Wellness 2025年第2期14卷 439-449页

作者： Yaya Wang Tianchang Zhang Linqing Nie Yan Zhang Junping Wang Shuo Wang Tianjin Key Laboratory of Food Science and Health School of MedicineNankai UniversityTianjin 300071China State Key Laboratory of Food Nutrition and Safety Key Laboratory of Food Nutrition and SafetyMinistry of Education of ChinaCollege of Food Science and EngineeringTianjin University of Science and TechnologyTianjin 300457China

Advanced lipoxidation end products(ALEs)are formed by modifying proteins with lipid oxidation *** formed in the body have been linked to diabetes and hepatic ***,it is not known whether ALEs formed in heat-processed foods can induce metabolic *** results indicate that dietary ALEs induce lipid accumulation in the liver of mice at an early stage and continuous feeding of ALEs induces inflammation,oxidative stress and hepatic insulin *** core reason for these adverse reactions is the damage to the intestinal barrier caused by *** to the damage to the intestinal barrier,there is an increase in lipopolysaccharides(LPS)in the liver that induces hepatic lipid accumulation by modulating hepatic lipid ***,ALEs plays a major role in the regulation of metabolic diseases by directly or indirectly inhibiting AMP activated protein kinase(AMPK)/Sirtuin 1(SIRT1)signaling through LPS.

关键词： Dietary advanced lipoxidation end products Metabolic disorders AMPK/SITR1 signaling pathway Gut dysbiosis Intestinal barrier

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Self-sustaining alkaline seawater electrolysis via forward osmosis membranes

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Green Energy & Environment 2025年第3期10卷 518-527页

作者： Ke Shi Hongyi Wan keyu Wang Fumohan Fang Shiyi Li Yixing Wang Linfeng Lei Linzhou Zhuang Zhi Xu State Key Laboratory of Chemical Engineering East China University of Science and TechnologyShanghai200237China Suzhou Laboratory Suzhou215000China Department of Chemistry and Chemical Engineering Hunan Institute of Science and TechnologyYueyangHunanYueyang414000China

Seawater electrolysis for hydrogen production faces inherent challenges, including side reactions, corrosion, and scaling, stemming from the intricate composition of seawater. In response, researchers have turned to continuous water splitting using forward osmosis(FO)-driven seawater desalination. However, the necessity of a neutral electrolyte hampers this strategy due to the limited current density and scarcity of precious metals. Herein, this study applies alkali-durable FO membranes to enable self-sustaining seawater splitting, which can selectively withdraw water molecules, from seawater, via concentration gradient. The membranes demonstrates outstanding perm-selectivity of water/ions(~5830 mol mol^(-1)) during month-long alkaline resistance tests, preventing electrolyte leaching(>97% OHàretention) while maintaining ~95%water balance(V_(FO)= V_(electrolysis)) via preserved concentration gradient for consistent forward-osmosis influx of water molecules. With the consistent electrolyte environment protected by the polyamide FO membranes, the Ni Fe-Ar-P catalyst exhibits promising performance: a sustain current density of 360 m A cmà2maintained at the cell voltage of 2.10 V and 2.15 V for 360 h in the offshore seawater, preventing Cl/Br corrosion(98% rejection) and Mg/Ca passivation(99.6% rejection). This research marks a significant advancement towards efficient and durable seawater-based hydrogen production.

关键词： Alkaline water electrolysis Forward osmosis Self-sustaining seawater splitting Hydrogen evolution Real seawater

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CO hydrogenation conversion driven by micro-environments of active sites over iron carbide catalysts

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Green Energy & Environment 2025年第2期10卷 367-373页

作者： Nan Song Xingxing Li Ebtihal Abograin Wenyao Chen Junbo Cao Jing Zhang De Chen Xuezhi Duan Xinggui Zhou State Key Laboratory of Chemical Engineering East China University of Science and Technology130 Meilong RoadShanghai200237China Department of Chemical Engineering Norwegian University of Science and TechnologyTrondheim7491Norway

Essentially clearing the structure-activity relationship between iron carbide catalysts involving multiple active centers to understand the reaction mechanism of CO hydrogenation conversion process is still a great ***,two main micro-environment factors,namely electronic properties and geometrical effects were found to have an integrated effect on the mechanism of CO hydrogenation conversion,involving active sites on multiple crystal *** Bader charge of the surface Fe atoms on the active sites had a guiding effect on the CO activation pathway,while the spatial configuration of the active sites greatly affected the energy barriers of CO *** the defective surfaces were more conducive to CO activation,the defective sites were not the only sites to dissociate CO,as CO always tended to dissociate in a wider *** synergistic effect of the micro-environment also occurred during the CO conversion *** C atoms on relatively flat configurations were more likely to form methane,while the electronic properties of the active sites could effectively describe the C-C coupling process,as well as distinguish the coupling mechanisms.

关键词： Micro-environment CO hydrogenation conversion Electronic property Local environment Synergistic effect

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Targeted and pH-sensitive polyzwitterionic liposomes for oral anticancer drug delivery

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Particuology 2025年第3期98卷 13-20页

作者： Mingyang Hu Rui Zheng Qi Pan Chen Peng Xinyue Zhang Wei He Wenlong Yao Yan Li Beijing Key Laboratory for Bioengineering and Sensing Technology School of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijing100083China State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical SciencesChemical Biology CenterPeking UniversityBeijing100191China School of Materials Science and Engineering University of Science and Technology BeijingBeijing100083China

Compared to intravenous injection,oral administration is attractive due to its many advantages for cancer *** physiological barriers and other profiles of oral anticancer drug carriers into consideration,targeted and pH-sensitive polyzwitterionic liposomes(ZL)based on zwitterionic poly(carboxybetaine)(PCB)were constructed for oral delivery of doxorubicin hydrochloride(DOX·HCl)for cancer *** DOX-ZL with 40%trehalose had good lyophilization stability,which would be packaged into enteric capsules to enhance their stability in *** addition,DOX-ZL exhibited good storage stability and serum *** DOX-ZL could achieve controlled release of DOX·HCl at the endosomal pH 5.0 due to the pH-sensitive of zwitterionic ***,DOX-ZL could targeted deliver DOX·HCl to Caco-2 cells to cross the intestinal epithelial cell *** empty ZL had good biocompatibility,while DOX-ZL significantly inhibited tumor cells growth due to their high cellular uptake and controlled drug release ***,this work provided a promising approach for oral cancer therapy.

关键词： Polyzwitterionic liposomes Poly(carboxybetaine) Doxorubicin hydrochloride Oral administration Cancer therapy

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Insights into the effect of Y substitution on superlattice structure and electrochemical performance of A5B19-type La-Mg-Ni-based hydrogen storage alloy for nickel metal hydride battery

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材料科学技术（英文版） 2025年第4期207卷 60-69页

作者： Yanan Guo Wenfeng Wang Huanhuan Su Hang Lu Yuan Li Qiuming Peng Shumin Han Lu Zhang College of Environmental and Chemical Engineering Hebei Key Laboratory of Applied ChemistryYanshan UniversityQinhuangdao 066004China State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004China College of Environmental and Chemical Engineering Hebei Key Laboratory of Applied ChemistryYanshan UniversityQinhuangdao 066004China State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004China Baotou Zhongke Xuanda New Energy Technology Co.Ltd. Baotou 014030China

La-Mg-Ni-based hydrogen storage alloys with superlattice structures are the new generation anode mate-rial for nickel metal hydride(Ni-MH)batteries owing to the advantages of high capacity and exceptional activation ***,the cycling stability is not currently satisfactory enough which plagues its ***,a strategy of partially substituting La with the Y element is proposed to boost the capacity durability of La-Mg-Ni-based ***,phase structure regulation is implemented simultaneously to obtain the A5B19-type alloy with good crystal stability *** is found that Y promotes the phase formation of the Pr5Co19-type phase after annealing at 985 ℃.The alloy containing Y contributes to the superior rate capability resulting from the promoted hydrogen diffusion ***,Y substitution enables strengthening the anti-pulverization ability of the alloy in terms of increasing the volume match between[A2B4]and[AB5]subunits,and effectively enhances the anti-corrosion ability of the alloy due to high electronegativity,realizing improved long-term cycling stability of the alloy from 74.2％to 78.5％after cycling 300 *** work is expected to shed light on the composition and structure design of the La-Mg-Ni-based hydrogen storage alloy for Ni-MH batteries.

关键词： Nickel metal hydride battery Y element La-Mg-Ni-based alloy A5B19-type superlattice structure Electrochemical performance

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Perspectives on additive manufacturing for warhead applications

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Defence technology(防务技术) 2025年第1期43卷 225-251页

作者： Hao Xue Qiang Zhou Chuan Xiao Guangyan Huang State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China Ordnance Science and Research Academy of China Beijing 100089China Beijing Institute of Technology Chongqing Innovation Center Chongqing 401120China

According to different damage modes,warheads are roughly divided into three types:fragmentation warheads,shaped charge warheads,and penetrating *** to limitations in material and structural manufacturing,traditional manufacturing methods make it difficult to fully utilize the damage ability of the *** manufacturing(AM)technology can fabricate complex structures,with classified materials composition and customized components,while achieving low cost,high accuracy,and rapid production of the *** maturity of AM technology has brought about a new round of revolution in the field of *** this paper,we first review the principles,classifications,and characteristics of different AM *** development trends of AM technologies are pointed out,including multi-material AM technology,hybrid AM technology,and smart AM *** our survey,PBF,DED,and EBM technologies are mainly used to manufacture warhead damage *** and DIW technologies are mainly used to manufacture warhead ***,the research on the application of AM technology in three types of warhead and warhead charges was reviewed and the existing problems and progress of AM technologies in each warhead were ***,we summarized the typical applications and look forward to the application prospects of AM technology in the field of warheads.

关键词： Additive manufacturing Fragmentation warhead Shaped charge warhead Penetrating warhead Warhead charge

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Optical and mechanical properties of a spinel-type Zn0.8Mg0.2(Al,Ga)2O4 translucent ceramic

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Ceramics International 2025年第12期51卷 15416-15421页

作者： Hao, Yan Liu, Biao Wang, Bin Xu, Yuxin Zhang, Kuibao State Key Laboratory for Environment-friendly Energy Materials Southwest University of Science and Technology Mianyang621010 China

A spinel-type Zn0.8Mg0.2(Al1-xGax)2O4 (0≤x ≤ 0.5) translucent ceramic was prepared by the hot pressing sintering process. The effect of Ga3+ ions on microstructure, densification, optical, mechanical, and dielectric performance was investigated. The appropriate incorporation of Ga3+ ions reduced the sintering temperature and promoted densification. The translucent ceramic Zn0.8Mg0.2(Al0.8Ga0.2)2O4 with a relative density of 99.6 % exhibited a wide transmission range and excellent mechanical properties. The transmission curve covered a range of 0.23–8.0 μm. The ceramic Zn0.8Mg0.2(Al0.5Ga0.5)2O4 had a better transmittance, approximately 64.5 % at 2 μm, and above 55 % in the range of 0.7–6.3 μm. Its hardness was about 12.01 ± 0.46 GPa, which is slightly lower than that of MgAl2O4, but higher than that of MgGa2O4, ZnAl2O4, and ZnGa2O4. In addition, the dielectric constant increased with the increase of Ga3+ content and dielectric constant of Zn0.8Mg0.2(Al0.8Ga0.2)2O4 was about 14.08. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Rockwell hardness

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