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A novel snail-inspired bionic design of titanium with strontium-substituted hydroxyapatite coating for promoting osseointegration

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Journal of Materials science & technology 2021年第20期79卷 35-45页

作者： Zhen Geng Xueping Li Luli Ji Zhaoyang Li Zhenduo Cui Jing Wang Jingyuan Cui Xianjin Yang Changsheng Liu Key Laboratory for Ultrafine Materials of Ministry of Education East China University of Science and TechnologyShanghai200237China Tianjin Key Laboratory of Composite and Functional Materials School of Materials Science and EngineeringTianjin UniversityTianjin300350China Engineering Research Center for Biomedical Materials of the Ministry of Education East China University of Science and TechnologyShanghai200237China The State Key Laboratory of Bioreactor Engineering East China University of Science and TechnologyShanghai200237China Frontiers Science Center for Materiobiology and Dynamic Chemistry East China University of Science and TechnologyShanghai200237China

As the population ages,more and more people are suffering from osteoarthritis(OA),resulting in an increasing requirement for joint *** modification to improve the topology and composition of the implants has been proved to be an effective way to improve the primary stability and long-term success rate of joint *** this work,a bionic micro/nano-structure accompanied with a strontium-substituted hydroxyapatite(SrHA)coating was fabricated on titanium(Ti)surface via electrochemical corrosion,ultrasonic treatment,and hydrothermal deposition *** vitro study demonstrated that the bionic structure and the bioactive apatite could synergistically increase the expressions of integrin-related gene(ITGα5β1)and osteoblastic genes(Col-I and OCN),and thus promote osteoblast *** addition,owing to the anti-bone resorption property of Sr^(2+),the coating could effectively inhibit osteoclast differentiation and *** a word,the prepared samples not only promoted osteogenesis but also inhibited *** in vivo experiment via a rabbit model found that the bionic structured surface provided the pore for new bone ingrowth,which was beneficial to the mechanical interlocking between the implant and ***,the bionic structure and bioactive SrHA coating had a synergistic effect on promoting bone formation,osseointegration,and bone-implant bonding *** study therefore presented a new strategy to fabricate bio-functionalized Ti-based implants for potential application in orthopedics field.

关键词： Bionic structure Bioactive apatite Osteoclast activity Osseointegration Bone-implant bonding strength

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3D printing of (Cf-Csf)/ZrB2-SiC composites through coextrusion of flexible pre-infiltrated Cf/ZrB2 fiber bundle and Csf/ZrB2 paste

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Ceramics International 2025年

作者： Zhang, Yixin Cheng, Yehong Fang, Jinming Ma, Denghao Sun, Xin Li, Junping An, Yumin Hu, Ning Zhao, Libin School of Mechanical Engineering Hebei University of Technology Tianjin300401 China Ministry of Education Tianjin300401 China Key Laboratory of Hebei Province on Scale-span Intelligent Equipment Technology Tianjin300401 China Chongqing Science Innovation Center Hebei University of Technology Chongqing401135 China Science and Technology of Advanced Functional Composite Materials Laboratory Aerospace Research Institute of Materials and Processing Technology Beijing100076 China State Key Laboratory of Reliability and Intelligence Electrical Equipment Hebei University of Technology Tianjin300401 China

This work addresses two major challenges in 3D printed ceramic composites: inadequate ceramic matrix infiltration in fiber bundles and the lack of optimized fiber-matrix interfaces. We developed a breakthrough fabrication strategy featuring: A tailored flexible carbon coating specifically designed for 3D printing applications, deposited on carbon fibers to create a suitable interface;A specialized pre-infiltration method enabling uniform ceramic slurry distribution in continuous carbon fiber bundles;and A unique co-extrusion process combining flexible pre-infiltrated Cf/ZrB2 bundles with Csf/ZrB2 paste. The resulting (Cf-Csf)/ZrB2-SiC composites, fabricated through multi-cycle precursor infiltration-pyrolysis, demonstrate remarkable mechanical properties (flexural strength: 237.6 MPa;fracture toughness: 7.30 MPa m1/2) and exceptional ablation resistance (enduring 2190 °C surface temperatures for 1320 s in wind tunnel testing). This work establishes a new paradigm for manufacturing ultra-high temperature ceramic composites with simultaneously enhanced mechanical and thermal performance. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Fracture toughness

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Enhancing lithium-ion and electric conductive Li_(2)FeSiO_(4)cathode through in situ boron-doping and carbon-coating strategy

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Rare Metals 2022年第12期41卷 4055-4064页

作者： Hao-Xiang Li Jia-Hui Zhu Xiao-Bing Huang Tao Zhou Yu-Rong Ren Hunan Provincial Key Laboratory of Chemical Power Sources College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China Hunan Provincial Key Laboratory of Water Treatment Functional Materials Hunan Provincial Key Laboratory for Control Technology of Distributed Electric Propulsion AircraftCollege of Chemistry and Materials EngineeringHunan University of Arts and ScienceChangde 415000China Jiangsu Province Engineering Research Center of Intelligent Manufacturing Technology for the New Energy Vehicle Power Battery Changzhou Key Laboratory of Intelligent Manufacturing and Advanced Technology for Power BatterySchool of Materials Science and EngineeringChangzhou UniversityChangzhou 213164China

The extremely low electrical conductivity and ion-diffusion coefficient of Li_(2)FeSiO_(4)limits its application as a cathode material in lithium-ion ***,in situ boron-doped Li_(2)FeSi_(1)-xB_(x)O_(4-δ)/C(x=0,0.01,0.03,0.05 and 0.07)at the Si site was prepared via the solid-state reaction method using pitch as the c arbon source.B doping in the lattice structure and a c arbon coating on the surface of the composites could effectively enhance the Li^(+)/electron ***,the reduced particle size of the active material with the relatively high specific area via borondoped modification could improve the wettability between the electrolyte and *** the synergistic effect of appropriate boron doping and carbon coating,it exhibits a good rate performance,specific capacity,and cycling *** a result,the as-prepared Li_(2)FeSi_(0.95)B_(0.05)O_(4-δ)/C cathode showed a high discharge capacity of 160.7mAh·g^(-1)at 0.2C,and the capacity retention rate was 96%after 100 cycles at *** work presents an effective path for designing advanced cathode materials for lithium-ion batteries.

关键词： Li_(2)FeSiO_(4) Carbon coating Boron doping Synergistic effect Lithium-ion battery

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Effect of reaction routes on the porosity and permeability of porous high entropy(Y0.2Yb0.2Sm0.2Nd0.2Eu0.2)B6 for transpiration cooling

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Journal of Materials science & technology 2020年第3期38卷 80-85页

作者： Heng Chen Zifan Zhao Huimin Xiang Fu-Zhi Dai Jie Zhang Shaogang Wang Jiachen Liu Yanchun Zhou Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and EngineeringTianjin UniversityTianjin 300072China Science and Technology on Advanced Functional Composite Laboratory Aerospace Research Institute of Materials&Processing TechnologyBeijing 100076China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China

Transpiration cooling technique is a reusable and high-efficiency thermal protection system(TPS),which is potential to improve the reusability and security of re-entry space *** low density,high permeability and high porosity are general requirements for porous media of transpiration cooling *** this work,a new porous high entropy metal hexaboride(Y0.2Yb0.2Sm0.2Nd0.2Eu0.2)B6 is designed and prepared by the in-situ reaction/partial sintering *** reaction routes are designed to synthesize(Y0.2Yb0.2Sm0.2Nd0.2Eu0.2)B6,including boron thermal reduction and borocarbon thermal *** as-prepared porous HE(Y0.2Yb0.2Sm0.2Nd0.2Eu0.2)B6 ceramics possess homogeneous microstructure and exhibit low density,high porosity,high compressive strength and high *** combination of these properties makes porous HE(Y0.2Yb0.2Sm0.2Nd0.2Eu0.2)B6 promising as a candidate porous media for various transpiration cooling applications.

关键词： High entropy ceramics (Y0.2Yb0.2Sm0.2Nd0.2Eu0.2)B6 Transpiration cooling Porous UHTCs In-situ reaction synthesis

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Exploring the Predominant Factors Influencing the Oxygen Reduction Performance of PtCo/C Catalysts

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Chemical Research in Chinese Universities 2024年第4期40卷 753-760页

作者： LI Jinrong YU Xianghui SUN Qi PENG Yong CAO Shuang HOU Chun-Chao XU Qiang College of Chemistry and Chemical Engineering Institute for Sustainable Energy and ResourcesQingdao UniversityQingdao266071P.R.China Leibniz Institute for Catalysis e.V. Albert-Einstein-Strasse 29aRostock18059Germany School of Materials Science and Engineering Ocean University of ChinaQingdao266100P.R.China Shenzhen Key Laboratory of Micro/Nano-Porous Functional Materials(SKLPM) SUSTech-Kyoto University Advanced Energy Materials Joint Innovation Laboratory(SKAEM-JIL)Key University Laboratory of Highly Efficient Utilization of Solar Energy and Sustainable Development of GuangdongDepartment of Chemistry and Department of Materials Science and EngineeringSouthern University of Science and Technology(SUSTech)Shenzhen518055P.R.China

PtCo nanoalloys(NAs)deposited on carbon black are emerging as robust electrocatalysts for addressing the sluggish kinetic issue of oxygen reduction reaction(ORR).However,developing a simple and low-cost method to synthesize PtCo/C with excellent performance is still a great *** this work,a one-pot method was used to successfully obtain the PtCo NAs on commercial carbon supports of acetylene black and Ketjenblack ECP600JD,*** with those grown on Ketjenblack ECP600JD,the PtCo NAs grown on acetylene black exhibited higher electrochemical surface area(ECSA)and mass activity(MA),which may be attributed to the different particle sizes of PtCo NAs,distinct hydrophilicity,electroconductivity and charge distribution between the carbon supports and PtCo *** study provides valuable insights into the optimal design of carbon-supported ORR electrocatalysts with exceptional activity and durability.

关键词： Oxygen reduction reaction PtCo nanoalloy Carbon-supported nanostructure Acetylene black

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A novel approach for in-situ producing Al2O3/aluminum matrix syntactic foam with high specific strength

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Journal of Alloys and Compounds 2023年第1期960卷

作者： Hu, Chuyan Shen, Liying Huang, Zhenhui Wang, Linchao Wang, Bohan Liu, Qiang Ye, Feng Key Laboratory of Advanced Structural-Functional Integration Materials & Green Manufacturing Technology School of Materials Science and Engineering Harbin Institute of Technology Harbin150001 China

Low-density foams with high strength are eagerly desired to use as energy absorption and shock isolation systems during transportation. In this work, an Al2O3/aluminum matrix syntactic foam with a density of 1.41 g/cm3 and a compressive strength of 238 MPa was prepared by a novel approach, which specific strength outperforms the most advanced aluminum matrix syntactic foams as reported in the literature. Especially, the hollow Al2O3 spheres were produced by an in-situ reaction of the hollow glass beads in this foam. Moreover, an electric current was first utilized in this new approach, which proved to have a crucial effect on the in-situ reaction, making the hollow glass beads rapidly and completely transform into Al2O3 spheres to improve interface conditions. The approach is believed to provide a favorable strategy to design different metal matrix syntactic foams with improved performance. © 2023

关键词： Spheres

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Boric Acid-Assisted Pyrolysis for High-Loading Single-Atom Catalysts to Boost Oxygen Reduction Reaction in Zn-Air Batteries

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Energy & Environmental Materials 2024年第2期7卷 102-110页

作者： Chenxi Xu Jiexing Wu Liang Chen Yi Gong Boyang Mao Jincan Zhang Jinhai Deng Mingxuan Mao Yan Shi Zhaohui Hou Mengxue Cao Huanxin Li Haihui Zhou Zhongyuan Huang Yafei Kuang State Key Laboratory for Chemo/Biosensing and Chemometrics and College of Chemistry and Chemical Engineering Hunan UniversityChangsha 410082China School of Chemistry and Chemical Engineering Key Laboratory of Hunan Province for Advanced Carbon-based Functional MaterialsHunan Institute of Science and TechnologyYueyang 414006China Advanced Technology Institute University of SurreyGuildford Surrey GU27XHUK Department of Engineering University of Cambridge9 JJ Thomson AvenueCambridge CB30FAUK King's College London London SE11ULUK Department of Electrical and Electronic Engineering Imperial College LondonLondon SW72AZUK College of Materials and Metallurgy Guizhou UniversityGuiyang 550025China Department of Chemistry Physical&Theoretical Chemistry LaboratoryUniversity of OxfordSouth Parks RoadOxford OX13QZUK

The emerging of single-atom catalysts(SACs)offers a great opportunity for the development of advanced energy storage and conversion devices due to their excellent activity and durability,but the actual mass production of high-loading SACs is still ***,a facile and green boron acid(H_(3)BO_(3))-assisted pyrolysis strategy is put forward to synthesize SACs by only using chitosan,cobalt salt and H_(3)BO_(3)as precursor,and the effect of H_(3)BO_(3)is deeply *** results show that molten boron oxide derived from H_(3)BO_(3)as ideal high-temperature carbonization media and blocking media play important role in the synthesis *** a result,the acquired Co/N/B tri-doped porous carbon framework(Co-N-B-C)not only presents hierarchical porous structure,large specific surface area and abundant carbon edges but also possesses high-loading single Co atom(4.2 wt.%),thus giving rise to outstanding oxygen catalytic *** employed as a catalyst for air cathode in Zn-air batteries,the resultant Co-N-B-C catalyst shows remarkable power density and long-term ***,our work gains deep insight into the role of H_(3)BO_(3)and provides a new avenue to synthesis of high-performance SACs.

关键词： boric acid oxygen reduction reaction single-atom catalysts Zn-air batteries

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Inflammation and Microbiota Regulation Potentiate Pneumonia Therapy by Biomimetic Bacteria and Macrophage Membrane Nanosystem

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Research 2023年第4期2023卷 399-413页

作者： Yuan Li Xiangmei Liu Zhenduo Cui Yufeng Zheng Hui Jiang Yu Zhang Zhaoyang Li Shengli Zhu Paul K Chu Shuilin Wu School of Materials Science and Engineering Peking UniversityBeijing 100871China The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China School of Materials Science and EngineeringTianjin UniversityTianjin 300072China Biomedical Materials Engineering Research Center Hubei Key Laboratory of Polymer MaterialsMinistry-of-Education Key Laboratory for the Green Preparation and Application of Functional MaterialsSchool of Materials Science and EngineeringHubei UniversityWuhan430062China School of Health Science and Biomedical Engineering Hebei University of TechnologyXiping Avenue 5340Beichen DistrictTianjin 300401China Department of Orthopedics Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhou510080China Department of Physics Department of Materials Science and Engineeringand Department of Biomedical EngineeringCity University of Hong KongKowloon 999077Hong KongChina.

While conventional nanosystems can target infected lung tissue,they cannot achieve precise cellular targeting and enhanced therapy by modulating inflammation and microbiota for effective ***,we designed a nucleus-targeted nanosystem with adenosine triphosphate(ATP)and reactive oxygen species stimuli-response to treat pneumonia coinfected with bacteria and virus that is enhanced through inflammation and microbiota *** nucleus-targeted biomimetic nanosystem was prepared through the combined bacteria-macrophage membrane and loaded hypericin and ATP-responsive dibenzyl oxalate(MMHP)*** MMHP despoiled the Mg^(2+)of intracellular cytoplasm in bacteria to achieve an effective bactericidal ***,MMHP can target the cell nucleus and inhibit the H1N1 virus duplication by inhibiting the activity of *** possessed an immunomodulatory ability to reduce the inflammatory response and activate CD8^(+)T cells for assisted infection *** the mice model,the MMHP effectively treated pneumonia coinfected with Staphylococcus aureus and H1N1 ***,MMHP mediated the composition of gut microbiota to enhance the pneumonia ***,the dual stimuli-responsive MMHP possessed promising clinical translational potential to therapy infectious pneumonia.

关键词： inflammation H1N1 lung

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Temporary and spatially resolved luminescence studies of p-GaN segments fabricated by vacancy-guided redistribution of Mg using sequential ion implantation of Mg and N 21

Temporary and spatially resolved luminescence studies of p-G...

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21st International Workshop on Junction technology, IWJT 2023

作者： Shima, K. Tanaka, R. Takashima, S. Ueno, K. Edo, M. Uedono, A. Ishibashi, S. Chichibu, S.F. Tohoku University Institute of Multidisciplinary Research for Advanced Materials Sendai980-8577 Japan Advanced Technology Laboratory Fuji Electric Co. Ltd Hino191-8502 Japan University of Tsukuba Division of Applied Physics Faculty of Pure and Applied Sciences Tsukuba305-8573 Japan Research Center for Computational Design of Advanced Functional Materials National Institute of Advanced Industrial Science and Technology Tsukuba305-8568 Japan

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Vacuum Evaporation Synthesizing Sc Film Layer and Elucidation of Near-Surface Ba-O-Sc Electronic Configuration for Dispenser Cathode

SSRN

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SSRN 2024年

作者： Sun, Junhao Yang, Yunfei Dong, Liran Liu, Zheng Liu, Peng Cai, Yongfeng Liu, Hexiong Wang, Jinshu Key Laboratory of Advanced Functional Materials of Education Ministry of China College of Materials Science and Engineering Beijing University of Technology Beijing100124 China

One of the important issues with the scandate cathode is the mechanism by which Sc works on the cathode surface. A surface Sc-rich dispenser cathode was prepared via the vacuum evaporation method to clarify the role of Sc in the cathode performance. The XPS results indicate that the surface chemical state of Sc on the surface after activation is consists of Sc0 and ScƐ+ (0 © 2024, The Authors. All rights reserved.

关键词： Cathodes

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