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Thermo-responsive microneedles patch for transdermal drug delivery via squeezing in diabetic foot ulcers

材料科学技术（英文版） 2025年第2期205卷 299-314页

作者： Xiaotong Wu Dan Xia Tingting Shi Baoe Li Donghui Wang Chunyong Liang Mingdong Dong Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology School of Materials Science and EngineeringHebei University of TechnologyTianjin 300130China Hebei Key Laboratory of Biomaterials and Smart Theranostics School of Health Sciences and Biomedical EngineeringHebei University of TechnologyTianjin 300130China Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology School of Materials Science and EngineeringHebei University of TechnologyTianjin 300130China Hebei Key Laboratory of Biomaterials and Smart Theranostics School of Health Sciences and Biomedical EngineeringHebei University of TechnologyTianjin 300130China Interdisciplinary Nanoscience Center Aarhus UniversityAarhus CDK-8000Denmark

Microneedle(MN)patches could be a promising treatment for diabetic foot ulcers that plague thousands of people *** reducing skin resistance or increasing driving force can accelerate the effi-ciency of transdermal drug delivery with conventional MN patches,it can create toxic chemical residues or require the help of additional ***,a thermo-responsive microneedles patch(TMN)with high biocompatibility without additional equipment is *** TMN consisted of a bilayer mi-croneedles composed of sodium alginate(SA)-g-poly(N-isopropylacrylamide)layer(SA-g-PNIPAM)loaded with sucrose octasulfate sodium salt(SOS)and hyaluronic acid layer and a polycaprolactone/chitosan nanofiber membrane loading with tetracycline hydrochloride(TH)and *** accelerates drug re-lease by extruding the drug through a volumetric phase transition in response to temperature changes,and TH and SOS promote wound healing by inhibiting bacterial growth and promoting vascular regener-ation and epithelial *** results showed that the drug release of TMN was significantly faster,with the drug release rate of more than 80％in the 10th h,and the antibacterial rate of TMN could reach 800％.In addition,TMN had good biocompatibility and good healing effects in vivo,which may be helpful for the design of multifunctional dressings in the future.

关键词： Microneedles patch Thermal response Transdermal drug delivery Diabetic foot ulcers

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15.13%Sr-doped CsPbI_(3) quantum dots with near-unity quantum yield via surface ligand compensation

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Nano Research 2025年第4期18卷 534-543页

作者： Yi Peng Wanzhong Gu Yuhui Dong Yucong Ji Danni Yan Ziyun Lin Li Zhang Yousheng Zou Haibo Zeng MIIT Key Laboratory of Advanced Display Materials and Devices Jiangsu Province Engineering Research Center of Quantum Dot DisplaySchool of Materials Science and EngineeringInstitute of Optoelectronics and NanomaterialsNanjing University of Science and TechnologyNanjing 210094China

Sr-doping of perovskite quantum dots(QDs)is a promising strategy to reduce Pb content and improve optical performance and ***,excessive Sr introduces new defects that degrade photoluminescence quantum yield(PLQY).Therefore,it is a challenge to balance high optical performance with high doping concentration for the preparation of environmentally friendly perovskite *** this study,we report the highest Sr/Pb ratios Sr-doped CsPbI_(3) QDs(15.13%)with a near-unity *** balance between high PLQY and high Sr-doping rate is achieved through the introduction of oleylammonium iodide(OAmI)ligand compensation during the anti-solvent purification process,which can form an iodine-enriched environment and effectively passivates the surface defects of QDs caused by excessive ***,the Sr-doped CsPbI_(3) QDs exhibit superior stability in environments with high temperature and humidity or direct contact with *** strategy provides a novel approach for the preparation of lead-less and lead-free QDs with superior optical performance and stability,offering a potential solution for environmentally friendly applications.

关键词： CsPbI_(3)quantum dots Sr-doping ligand compensation photoluminescence quantum yield environmental stability

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Spin logic devices based on negative differential resistance -enhanced anomalous Hall effect

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International Journal of Minerals,Metallurgy and materials 2024年第6期31卷 1437-1448页

作者： Hongming Mou Ziyao Lu Yuchen Pu Zhaochu Luo Xiaozhong Zhang Key Laboratory of Advanced Materials(MOE) School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China State Key Laboratory of Artificial Microstructure and Mesoscopic Physics School of PhysicsPeking UniversityBeijing 100871China

Owing to rapid developments in spintronics,spin-based logic devices have emerged as promising tools for next-generation computing *** paper provides a comprehensive review of recent advancements in spin logic devices,particularly focusing on fundamental device concepts rooted in nanomagnets,magnetoresistive random access memory,spin–orbit torques,electric-field modu-lation,and magnetic domain *** operation principles of these devices are comprehensively analyzed,and recent progress in spin logic devices based on negative differential resistance-enhanced anomalous Hall effect is *** devices exhibit reconfigur-able logic capabilities and integrate nonvolatile data storage and computing *** current-driven spin logic devices,negative differential resistance elements are employed to nonlinearly enhance anomalous Hall effect signals from magnetic bits,enabling reconfig-urable Boolean logic ***,voltage-driven spin logic devices employ another type of negative differential resistance ele-ment to achieve logic functionalities with excellent cascading *** cascading several elementary logic gates,the logic circuit of a full adder can be obtained,and the potential of voltage-driven spin logic devices for implementing complex logic functions can be *** review contributes to the understanding of the evolving landscape of spin logic devices and underscores the promising pro-spects they offer for the future of emerging computing schemes.

关键词： spin logic spin–orbit torque negative differential resistance full-adder

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Unique Duplex Microstructure and Porosity Effect on Mechanical Properties of AlCoCrFeNi_(2.1) Eutectic High-Entropy Alloys Processed by Selective Laser Melting

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Acta Metallurgica Sinica(English Letters) 2023年第9期36卷 1465-1481页

作者： Liwei Lan Wenxian Wang Zeqin Cui Xiaohu Hao College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan030024China Key Laboratory of Interface Science and Engineering in Advanced Materials Taiyuan University of TechnologyMinistry of EducationTaiyuan030024China Shanxi–Zhejiang University New Materials and Chemical Research Institute Taiyuan030032China

Selective laser melting(SLM)was performed on AlCoCrFeNi_(2.1) eutectic high-entropy alloys(EHEAs),and the unique duplex microstructure and porosity were investigated as well as the negative effect on mechanical *** printed AlCoCrFeNi_(2.1) EHEAs is composed of face-centered cubic and BCC/B2 phases,and the surface texture of samples perpendicular to and parallel to the building direction is *** the bottom of the molten pool to the inside,the structure changes from dendrites to columnar crystals and then to cellular crystals,the distribution of elements in and around the molten pool is uniform,and there is no element *** surface hardness of as-printed AlCoCrFeNi_(2.1) EHEAs is higher than that of as-cast ones due to the grain refinement strengthening,and there is anisotropy in different surface hardness,the highest hardness is 580 HV(X–Y plane)and 560 HV(X–Z plane).The reduction of bearing area and tip stress concentration caused by pores have adverse effects on the tensile strength and elongation of the alloy,the ultimate tensile strength increased from 1060 to 1289 MPa.

关键词： Selective laser melting Eutectic high-entropy alloys Metallurgical porosity Microstructure evolution Grains and interfaces

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Assay of Biomarkers for Alzheimer’s Disease by Surface Plasmon Resonance

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Journal of Analysis and Testing 2024年第3期8卷 251-261页

作者： Xinyao Yi Huihui Chen Yuhan He Jianxiu Wang Hunan Provincial Key Laboratory of Micro and Nano Materials Interface Science College of Chemistry and Chemical EngineeringCentral South UniversityChangsha410083China

Alzheimer’s disease(AD)is one of the neurodegenerative diseases characterized by cognitive dysfunction and behavioral *** diagnosis of AD serves as a viable means to avoid the onset and progression of the *** to the remarkably lower expression levels of AD biomarkers in cerebrospinal fluids and serum samples,sensitive and specific analytical methods are highly *** plasmon resonance(SPR)is ultrasensitive to the refractive index or thickness change at the metal surface,which enables real-time and label-free assay of target *** this review,we summarize the advances on assay of AD biomarkers including amyloid beta,tau protein,apoE proteins and apoE genes,and BACE1 by SPR,with emphasis on the analytical performances concerning anti-fouling and signal amplification strategies and real sample applications.

关键词： Surface plasmon resonance Alzheimer’s disease amyloid beta Tau protein apoE BACE1

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A multi-objective optimization based on machine learning for dimension precision of wax pattern in turbine blade manufacturing

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Advances in Manufacturing 2024年第3期12卷 428-446页

作者： Jing Dai Song-Zhe Xu Chao-Yue Chen Tao Hu San-San Shuai Wei-Dong Xuan Jiang Wang Zhong-Ming Ren State Key Laboratory of Advanced Special Steels School of Materials Science and EngineeringShanghai UniversityShanghai200444People’s Republic of China

Wax pattern fabrication in the investment casting of hollow turbine blades directly determines the dimension accuracy of subsequent casting,and therefore significantly affects the quality of final *** this work,we develop a machine learning-based multi-objective optimization framework for improving dimension accuracy of wax pattern by optimizing its process *** consider two optimization objectives on the dimension of wax pattern,i.e.,the surface warpage and core *** active learning of Bayesian optimization is employed in data sampling to determine process parameters,and a validated numerical model of injection molding is used to compute objective results of dimension under varied process *** collected dataset is then leveraged to train different machine learning models,and it turns out that the Gaussian process regression model performs best in prediction accuracy,which is then used as the surrogate model in the optimization framework.A genetic algorithm is employed to produce a non-dominated Pareto front using the surrogate model in searching,followed by an entropy weight method to select the most optimal solution from the Pareto *** optimized set of process parameters is then compared to empirical parameters obtained from previous trial-and-error experiments,and it turns out that the maximum and average warpage results of the optimized solution decrease 26.0%and 20.2%,and the maximum and average errors of wall thickness compared to standard part decrease from 0.22 mm and 0.0517 mm using empirical parameters to 0.10 mm and 0.0356 mm using optimized parameters,*** framework is demonstrated capable of addressing the challenge of dimension control arising in the wax pattern production,and it can be reliably deployed in varied types of turbine blades to significantly reduce the manufacturing cost of turbine blades.

关键词： Hollow turbine blade Wax pattern fabrication Dimension control Multi-objective optimization Machine learning Numerical simulation

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Enhanced photocatalytic N_(2) fixation using KNbO3/Bi_(4)O_(5)Br_(2) type Ⅱ heterojunction

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Frontiers of Chemical science and engineering 2024年第6期18卷 85-97页

作者： Lin Yue Zhihao Zeng Xujie Ren Shude Yuan Chuanqi Xia Xin Hu Leihong Zhao Lvchao Zhuang Yiming He Key Laboratory of the Ministry of Education for Advanced Catalysis Materials College of Chemistry and Materials ScienceZhejiang Normal UniversityJinhua 321004China Department of Materials Science and Engineering Zhejiang Normal UniversityJinhua 321004China

The fabrication of heterojunction catalysts is an effective strategy to enhance charge separation efficiency,thus boosting the performance of *** work presents the synthesis and investigation of a novel KNbO_(3)/Bi_(4)O_(5)Br_(2) heterostructure catalyst for photocatalytic N_(2)-to-NH_(3) conversion under light *** morphology analysis revealed KNbO_(3) microcubes embedded within Bi_(4)O_(5)Br_(2) nanosheets,the composite exhibited no significant improvement in specific surface area or optical property compared to Bi_(4)O_(5)Br_(2) due to the relatively wide band gap and low surface area of KNbO_(3).The main contribution lies in the enhanced separation efficiency of photogenerated electrons and ***,the band structure analysis suggests that KNbO_(3) and Bi_(4)O_(5)Br_(2) exhibit suitable band potentials to form a type II *** from the higher Fermi level of KNbO_(3) than Bi_(4)O_(5)Br_(2),the electron drift at the contact region thus occurs and leads to the formation of a built-in electric field with the direction from KNbO_(3) to Bi_(4)O_(5)Br_(2),accelerating electron migration and improving the operational efficiency of the ***,the KNbO_(3)/Bi_(4)O_(5)Br_(2) catalyst shows an increased photoactivity,achieving an NH_(3) generation rate 1.78 and 1.58 times those of KNbO_(3) and Bi_(4)O_(5)Br_(2),*** work may offer valuable insights for the design and synthesis of heterojunction composite photocatalysts.

关键词： KNbO_(3)/Bi_(4)O_(5)Br_(2) heterojunction photocatalytic N_(2)fixation charge separation

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Highly selective photocatalytic CO_(2) reduction to ethylene in pure water by Nb_(2)O_(5) nanoparticles with enriched surface –OH groups under simulated solar illumination

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Journal of advanced Ceramics 2023年第8期12卷 1641-1654页

作者： Haoyu Zhang Shuang Gao Haitao Guan Weiyi Yang Qi Li Key Laboratory of Advanced Technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China

Photocatalytic CO_(2) reduction to valuable chemical compounds could be a promising approach for carbon-neutral *** this work,a simple and robust thermal decomposition process was developed with ammonium carbonate((NH4)2CO3)as both precipitation agent and sacrificial template to produce fine Nb_(2)O_(5) nanoparticles with the rich existence of surface hydroxyl(–OH)*** was found by density functional theory(DFT)calculations and experiments that the rich existence of the surface–OH groups enhanced the adsorption of both reactants(CO_(2) and H_(2)O molecules)for the photocatalytic CO_(2) reduction on these fine Nb_(2)O_(5) nanoparticles,and the highly selective conversion of CO_(2) to the high-value chemical compound of ethylene(C_(2)H_(4),~68μmol·g^(−1)·h^(−1) with~100%product selectivity)was achieved under simulated solar illumination without usage of any sacrificial agents or noble metal *** synthesis process may also be readily applied as a surface engineering method to enrich the existence of the surface–OH groups on various metal oxide-based photocatalysts for a broad range of technical applications.

关键词： photocatalytic CO_(2)reduction niobium oxide nanoparticles thermal decomposition surface hydroxyl(-OH)groups simulated solar illumination

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A“bricks-and-mortar”structured graphene oxide/polyvinyl alcohol coating:Enhanced water interfacial lubrication and durability

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Friction 2024年第12期12卷 2657-2678页

作者： Hanglin LI Lin DING Jingchun ZHANG Zhaoyang GUO Yazhuo SHANG Honglai LIU Xiangqiong ZENG Jiusheng LI Key Laboratory for Advanced Materials School of Chemistry&Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China Laboratory for Advanced Lubricating Materials Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210China School of Materials and Chemistry University of Shanghai for Science and TechnologyShanghai 200093China

Coatings serve as ideal protective films for mechanical systems,providing dependable as well as efficient lubrication because of their unique structure along with outstanding tribological *** by the“bricks-and-mortar”structure,we prepared layered graphene oxide(GO)composite finishes strengthened with polyvinyl alcohol(PVA)and *** study demonstrates that the tribological properties of the GO-based coating on 304 stainless steel(SS304)are potentially greatly affected through PVA,GO,and *** optimizing the composition,we achieved the PVA_(40 wt%)/GO_(0.01 wt%)/borax composite coating,which exhibited the lowest average coefficient of friction(COF)of 0.021±0.003(a 97.86%reduction compared to control SS304)with minimal wear and abrasion even in a water *** found that the enhanced mechanical characteristics as well as elastic recovery within the coating were attributed to the hydrogen bonds and cross-linking between PVA and borax,which led to stress *** friction was further aided by the formation of a hydrated layer at the friction *** a result,the coating demonstrated remarkable durability,maintaining a low COF during long sliding distances(576 m,28,800 cycles,significantly longer than previously reported)without breaking.

关键词： graphene oxide coating water lubrication anti-wear properties durability

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Recent Advances in High‑Efficiency Electrocatalytic Water Splitting Systems

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Electrochemical Energy Reviews 2023年第1期6卷 1-38页

作者： Xian‑Wei Lv Wen‑Wen Tian Zhong‑Yong Yuan Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) School of Materials Science and EngineeringNankai UniversityTianjin 300350China

Electrocatalytic water splitting driven by renewable energy input to produce clean hydrogen(H_(2))has been widely considered a prospective approach for a future hydrogen-based ***,the development of industrial alkaline water electrolyzers is hindered due to their unfavorable thermodynamics with high overpotential for delivering the whole process,caused by sluggish kinetics involving four-electron *** exploration of water electrolysis with low energy consumption and high efficiency is urgently required to meet the ever-growing energy storage and portfolio *** review emphasizes the strategies proposed thus far to pursue high-efficiency water electrolysis systems,including from the aspects of electro-catalysts(from monofunctional to bifunctional),electrode engineering(from powdery to self-supported),energy sources(from nonrenewable to renewable),electrolytes(from pure to hybrid),and cell configurations(from integrated to decoupled).Critical appraisals of the pivotal electrochemistry are highlighted to address the challenges in elevating the overall efficiency of water ***,valuable insights for the future development directions and bottlenecks of advanced,sustainable,and high-efficiency water splitting systems are outlined.

关键词： Electrocatalytic water splitting Hydrogen-based society Electrode engineering Cell configurations Challenges and perspectives

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