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Hydroxyapatite composited PEEK with 3D porous surface enhances osteoblast differentiation through mediating NO by macrophage

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Regenerative Biomaterials 2022年第1期9卷 107-118页

作者： Xingdan Liu Liping Ouyang Lan Chen Yuqin Qiao Xiaohan Ma Guohua Xu Xuanyong Liu State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesDingxi Road 1295Shanghai 200050China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesYuquan Road 19Beijing 100049China Tongren Hospital Shanghai Jiao Tong University School of Medicine1111 Xianxia RoadShanghai 200336China School of Materials Science and Engineering&Henan Key Laboratory of Advanced Magnesium Alloy&Key Laboratory of Materials Processing and Mold Technology(Ministry of Education)Zhengzhou UniversityScience Avenue 100Zhengzhou 450001China Cixi Center of Biomaterials Surface Engineering Shanghai Institute of CeramicsChinese Academy of SciencesWenwei Road 345Ningbo 315300China Department of Orthopedic Surgery Spine CenterChangzheng HospitalNaval Medical UniversityNo.415 Fengyang RoadShanghai 200003China

The adverse immune response mediated by macrophages is one of the main factors that are prone to lead poor osseointegration of polyetheretherketone(PEEK)implants in ***,endowing PEEK with immunomodulatory ability to avoid the adverse immune response becomes a promising strategy to promote bone *** this work,sulfonation and hydrothermal treatment were used to fabricate a 3D porous surface on PEEK and hydroxyapatite(HA)composited *** HA composited PEEK with 3D porous surface inhibited macrophages polarizing to M1 phenotype and downregulated inducible nitric oxide synthase protein expression,which led to a nitric oxide concentration reduction in culture medium of mouse bone marrow mesenchymal stem cells(mBMSCs)under coculture *** decrease of nitric oxide concentration could help to increase bone formation-related OSX and ALP genes expressions and decrease bone resorption-related MMP-9 and MMP-13 genes expressions via cAMP–PKA–RUNX2 pathway in *** summary,the HA composited PEEK with 3D porous surface has the potential to promote osteogenesis of PEEK through immunomodulation,which provides a promising strategy to improve the bone repair ability of PEEK.

关键词： polyetheretherketone three-dimensional porous hydroxyapatite osteoimmunology nitric oxide

A Rapid and Scalable Fabrication of Flexible P/C-Cnts Anodes for Sodium-Ion Battery

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SSRN 2023年

作者： Xie, Chong Xu, Na Shi, Peiyi Li, Zhengkui Xiao, Wei Qin, Jian Yang, Huijuan Li, Xifei Xi’an Key Laboratory of New Energy Materials and Devices Institute of Advanced Electrochemical Energy School of Materials Science and Engineering Xi’an University of Technology China Shaanxi International Joint Research Center of Surface Technology for Energy Storage Materials China

Flexible sodium-ion batteries (SIBs) are a prior energy supply for the future wearable electronic devices. And red phosphorus (P) with high theoretical capacity (2596 mAh g-1) is regarded as an optimal candidate for SIB anode. However, the huge volume expansion of red P during the sodiation/desodiation process deteriorates the structural integrity of electrodes, resulting in the rapid capacity fading, which hinders the successful deployment of red P in the flexible SIB anodes. Herein, we propose a rapid and scalable method to fabricate the flexible P-based electrodes, which is similar with the common blade-coating method. The three-dimensional carbon nanotubes (CNTs) matrix from monodispersed CNT solution with robust mechanical strength ensures the structural integrity of the flexible electrode during the long cyclic process. As a result, the flexible P/C-CNTs electrode using as SIB anode delivers a reversible capacity (calculated based on the whole mass of the electrodes, 35 wt.% P in electrode) of 442 mA h g-1 at 0.5 A g-1 after 100 cycles, together with 83 % capacity retention. And this work could propel the practical application process of flexible SIB. © 2023, The Authors. All rights reserved.

关键词： Phosphorus

Bulk Heterostructure BA2PbI4/MAPbI3Perovskites for Suppressed Ion Migration To Achieve Sensitive X-ray Detection Performance

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ACS Applied Materials & Interfaces 2022年第49期14卷 54867-54875页

作者： Yingrui Xiao Chengzhi Xue Xi Wang Yucheng Liu Zhou Yang Shengzhong Liu Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology Institute for Advanced Energy Materials School of Materials Science and Engineering Shaanxi Normal University Xi’an710119 China Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian116023 China

Three-dimensional (3D) lead–halide perovskites with outstanding mobility-lifetime products and large attenuation coefficients for X-ray photons have demonstrated highly sensitive X-ray detection. H...

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In-Situ Synthesis of Mn2sio4 and Mnxsi Dual Phases Through Solid-State Reaction to Improve the Initial Coulombic Efficiency of Sio Anode for Lithium-Ion Batteries

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SSRN 2024年

作者： Lei, Qian Wang, Shuai Wu, Qinyu Cao, Rui Cai, Zhenfei Moin, Muhmmad Ma, Yangzhou Song, Guangsheng Yang, Weidong Wen, Cuie Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials Ministry of Education School of Materials Science and Engineering Anhui University of Technology Maanshan243000 China Future Manufacturing Flagship Commonwealth Scientific and Industry Research Organization MelbourneVIC3168 Australia School of Engineering RMIT University MelbourneVIC3001 Australia

Silicon monoxide(SiO)-based anode materials have been extensively examined as high energy density for lithium-ion batteries, but still suffer from low initial Coulombic efficiency(ICE). Here, A novel SiO-MnO/Mn2SiO4-MnxSi anode material, prepared through scalable ball milling and heat treatment, is proposed for the first time, in which Mn2SiO4 and MnxSi alloy through solid-state reaction are embedded in the silicon oxide matrix to improve ICE. Half-cell testing shows that the ICE of pristine SiO increased from 52.5% to 70.5%, thanks to the solid-state reaction between SiO and MnO during the heat treatment, in which MnO consumed the SiO2 generated during the disproportionation of SiO, thereby reducing the first irreversible loss of Li+ during the lithiation process. In addition, the MnxSi alloy phase can improve lithium-ion diffusion ability to a certain extent. This report provides a new approach to alleviate the ICE performance of SiO-based anode materials. © 2024, The Authors. All rights reserved.

关键词： Manganese oxide

The Thermal Resistance Performance of Wti Alloy-Thin-Film Temperature Sensors Prepared by Magnetron Sputtering

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SSRN 2023年

作者： Wu, Zhengtao Zhang, Yintuan Wang, Qimin Zhang, Shihong Wu, Zhengtao Kwon, Se-Hun School of Electromechanical Engineering Guangdong University of Technology Guangzhou510006 China Guangdong Provincial Key Laboratory of Advanced Manufacturing Technology of Marine Energy Equipment Guangdong University of Technology Guangzhou510006 China Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials Ministry of Education Anhui University of Technology Maanshan City243000 China Guangdong University of Technology China Pusan National University Busan609-735 Korea Republic of

Microstructure and properties of WTi alloy films with 0~23 at.% Ti prepared by magnetron sputtering were investigated. The electrical resistivity gradually increased with the increase in the Ti content. When the Ti content was 6.8 at.%, the TCR value of the alloy film reaches the maximum value of 19.5×10-4 K-1, which is 3.6 times higher than that of the pure W film. After several thermal resistance tests, the TCR value of the WTi alloy film with 6.8 at.% Ti decreased gradually. After five times of measurements, the TCR value decreased gradually from 19.5×10-4 to 16.3×10-4 K-1. After annealing at 500℃ for 30 min, the grain size of the WTi alloy film (6.8 at.% Ti) increased, a few pores appeared, and the density of the film decreased. The TCR value decreased from 19.5×10-4 K-1 to 14×10-4 K-1. When the annealing time was increased to 60 min, the structure and properties of the WTi alloy film remained basically unchanged. After conducting the annealing treatment for 30 min, the WTi films showed excellent stability in the thermal resistance tests, and its TCR value was basically consistent after cyclic thermal loading, which has promising application prospects for the temperature measurement of tools and dies. © 2023, The Authors. All rights reserved.

关键词： Magnetron sputtering

Fabrication and electrical characteristics of flash-sintered SiO_(2)-doped ZnO-Bi_(2)O_(3)-MnO_(2) varistors

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Journal of advanced Ceramics 2020年第6期9卷 683-692页

作者： Pai PENG Yujun DENG Jingpeng NIU Liyi SHI Yunzhu MEI Sanming DU Juan LIU Dong XU Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials(Anhui University of Technology) Ministry of EducationMa'anshan 243002China Key Laboratory of Etallurgical Emission Reduction&Resources Recycling(Anhui University of Technology) Ministry of EducationMa'anshan 243002China Research Center of Nano Science and Technology Shanghai UniversityShanghai 200444China National United Engineering Laboratory for Advanced Bearing Tribology Henan University of Science and TechnologyLuoyang 471023China

The dense ZnO-Bi_(2)O_(3)-MnO_(2)(ZBMS)varistors for x=0,1,2,3 wt% were fabricated by flash sintering method under the low temperature of 850℃ within 2 *** sample temperature was estimated by a black body radiation model in the flash sintering *** crystalline phase assemblage,density,microstructure,and electrical characteristics of the flash-sintered ZBMS varistors with different SiO_(2)-doped content were *** to the XRD analysis,many secondary phases were detected due to the SiO_(2) ***,the average grain size decrease with increasing SiO_(2)-doped *** improved nonlinear characteristics were obtained in SiO_(2)-doped samples,which can be attributed to the ion migration and oxygen absorption induced by the doped SiO_(2).The flash-sintered ZBMS varistor ceramics for x=2 wt% exhibited excellent comprehensive electrical properties,with the nonlinear coefficient of 24.5,the threshold voltage and leakage current of 385 V·mm^(-1 )and 11.8μA,respectively.

关键词： flash sintering SiO_(2)additive ZBMS varistors electrical properties

Unraveling Strain Localization and Deformation Banding of a Β-Ti Alloy Via Crystal Plasticity Modeling

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SSRN 2024年

作者： Xie, Qingge Feng, Kaihang Wang, Weiyi Zhu, Jiangqi Yin, Shuo Liu, Min Yan, Xingchen Lian, Junhe Collaborative Innovation Center of Steel Technology University of Science and Technology Beijing Beijing100083 China School of Material Science and Engineering Tsinghua University Beijing100084 China Institute of New Materials Guangdong Academy of Sciences Guangdong-Hong Kong Joint Laboratory of Modern Surface Engineering Technology Guangdong Provincial Key Laboratory of Modern Surface Engineering Technology Guangdong Guangzhou510651 China Trinity College Dublin The University of Dublin Department of Mechanical Manufacturing and Biomedical Engineering Parsons Building Dublin 2 Ireland Advanced Manufacturing and Materials Department of Mechanical Engineering Aalto University Aalto00076 Finland

Necking is of industrial importance since it limits the maximum allowable deformation per pass in the forming process. Understanding the strong necking phenomenon and the resulting microstructural feature for the β-Ti alloy was not fully explored. The hardening-free β-Ti alloy is suitable to investigate the issues since necking is dominant in tension. In this paper, necking, shear bands and deformation bands due to strain localization for a β-Ti alloy prepared by selective laser melting were studied. The macro/micro features and tensile flow stresses can be reproduced by a crystal plasticity finite element model (CPFEM) with explicit grain structures. The identified correlation between microstructure and mechanical properties can be attributed to limited strain rate sensitivity (SRS) and the presence of hard particles. Two kinds of deformation bands were identified: lenticular kink bands in the necking region and slim slip bands. The former can be reproduced with a compact set of active slip systems, and both requires hard particles. Increasing SRS resulted in the suppression of necking, and had no effect on the banding structure compared to the counterpart with low SRS. Through a loading-unloading-reloading test, ductility was improved by delaying the progress of necking. The present results contribute to a fundamental understanding of (1) the key role of SRS in necking, (2) the microstructural features induced by necking, especially on the kink bands. The results highlight the importance of both hardening for suppressing strain localization and a rational SRS value in CPFEM. © 2024, The Authors. All rights reserved.

关键词： Hardening

Boosting the High Gas Sensing Performance Via Laser Embedding Schottky Heterointerfaces at Particle Boundaries in Sno2 Nanofibers

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SSRN 2023年

作者： Ma, Zhuangzhuang Zhang, Xiuhai Xiao, Changlin Gao, Xiaotong Wang, Hongqiang Jia, Lichao Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering Shaanxi Normal University 620 West Chang’an Street Shaanxi Xi’an710119 China State Key Laboratory of Solidification Processing Center for Nano Energy Materials School of Materials Science and Engineering Northwestern Polytechnical University Shaanxi Joint Labortary of Graphene Xi’an710072 China

Metal oxide semiconductor-based gas sensors often require noble metals for modification to enhance the carrier mobility of the material. However, current noble metal modifications are almost always performed at the material surface, making it difficult to apply them to the particle boundaries (PBs) of the material, which can greatly reduce the utilization of noble metals. We herein synthesized Pt nanocrystals (NCs) with average size of 1 nm by the technology of pulsed laser irradiation, followed by in situ embedded at the PBs of SnO2 nanofibers to address the unwanted carrier loss at PBs for substantially improved gas sensing. The Pt NCs/SnO2 exhibited 2.23-fold enhancement of response values, and 2.86-fold improvement on selectivity for NO2 at 50oC, comparing to these samples without PBs engineering. Further analysis showed that the enhancement of the gas-sensitive performance is mainly due to the electronic and chemical sensitization of Pt NCs at the SnO2 PBs and the high utilization of Pt NCs leading to a significant increase in the carrier mobility of the material. We thus believe present work provides an efficient alternative for developing high performance gas sensing based on materials with intrinsic particle boundaries. © 2023, The Authors. All rights reserved.

关键词： Pulsed lasers

Enhancing Structure and Properties of Laser Repairing 30crmnsia Alloy Assisted by Ultrasound and Heat Treatment

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SSRN 2024年

作者： Wu, Rongda Geng, Yongxiang Zheng, Haizhong Xiao, Yixin Xiao, HuiYuan National Defense Key Disciplines Laboratory of Light Alloy Processing Science and Technology Nanchang Hangkong University Nanchang330063 China Nanchang Key Laboratory of Advanced Laser Surface Treatment for Wear-resistant Components Nanchang Hangkong University Jiangxi330063 China School of Material Science and Engineering Nanchang Hangkong University Jiangxi330063 China

The present study reported the successful application of ultrasonic-assisted additive manufacturing technology to rectify alloy flaws, leading to a notable improvement in the alloy’s microstructure. Subsequently, the corrected alloy underwent heat treatment, which improved its overall mechanical properties and further refined its microstructure. The results demonstrated that the alloy's properties after heat treatment surpassed those of the parent material. Specifically, the yield strength measured 439 MPa, equivalent to 83.22% of the original level achieved, while the tensile strength reached 1902.5 MPa, marking a 12.65% increase compared to the original value of 1688.8 MPa. Furthermore, the integration of heat treatment with ultrasonic-assisted additive manufacturing enhanced the quality of repairs by achieving a homogeneous microstructure and minimizing the adverse effects of the heat-affected zone on performance. © 2024, The Authors. All rights reserved.

关键词： Grain refinement