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Development and material characteristics of glaucoma surgical implants

Advances in Ophthalmology Practice and Research 2023年第4期3卷 171-179页

作者： Qiyu Qin Chengshou Zhang Naiji Yu Fan Jia Xin Liu Qi Zhang Min Chen Kaijun Wang Department of Ophthalmology the Second Affiliated Hospital of Zhejiang University School of MedicineHangzhouChina Zhejiang Provincial Key Lab of Ophthalmology HangzhouChina MOE Key Laboratory of Macromolecule Synthesis and Functionalization of Ministry of Education Department of Polymer Science and EngineeringZhejiang UniversityHangzhouChina Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province Department of CardiologySir Run Run Shaw HospitalZhejiang University School of MedicineHangzhouChina

Background:Glaucoma is the leading cause of irreversible blindness *** reduction of intraocular pressure has proved to be the only factor which can be modified in the treatment,and surgical management is one of the important methods for the treatment of glaucoma *** text:In order to increase aqueous humor outflow and further reduce intraocular pressure,various drainage implants have been designed and applied in clinical *** initial Molteno,Baerveldt and Ahmed glaucoma implants to the Ahmed ClearPath device,Paul glaucoma implant,EX-PRESS and the eyeWatch implant,to iStent,Hydrus,XEN,PreserFlo,Cypass,SOLX Gold Shunt,etc.,glaucoma surgical implants are currently undergoing a massive transformation on their structures and *** materials have been used to produce these implants,from original silicone and porous polyethylene,to gelatin,stainless steel,SIBS,titanium,nitinol and even 24-carat ***,the material geometry,size,rigidity,biocompatibility and mechanism(valved versus nonvalved)among these implants are markedly *** this review,we discussed the development and material characteristics of both conventional glaucoma drainage devices and more recent implants,such as the eyeWatch and the new minimally invasive glaucoma surgery(MIGS)***:Although different in design and materials,these delicate glaucoma surgical implants have widely expanded the glaucoma surgical methods,and improved the success rate and safety of glaucoma surgery ***,all of these glaucoma surgical implants have various limitations and should be used for different glaucoma patients at different conditions.

关键词： Glaucoma drainage devices Minimally invasive glaucoma surgery material characteristics

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Advances and trends in plastic forming technologies for welded tubes

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Chinese Journal of Aeronautics 2016年第2期29卷 305-315页

作者： Zhan Mei Guo Kun Yang He State Key Laboratory of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical University

With the implementation of environmental protection, sustainable development and conservation-oriented policies, components and parts of thin-walled welded tubes have gained increasing application in the aircraft and automotive industries because of their advantages： easily achieving forming and manufacturing process at low cost and in a short time. The current research on welded tube plastic forming is mainly concentrated on tube internal high-pressure forming, tube bending forming, and tube spinning forming. The focuses are on the material properties and char- acterization of welded tubes, finite element modeling for welded tube forming, and inhomogeneous deformation behavior and the mechanism and rules of deformation coordination in welded tube plastic forming. This paper summarizes the research progress in welded tube plastic forming from these aspects. Finally, with a focus on the urgent demand of the aviation, aerospace and automotive industries for high-strength and light-weight tubes, this paper discusses the development trends and challenges in the theory and technology of welded tube plastic forming in the future. Among them, laser tailor-welded technology will find application in the manufacture of high-strength steel tubes. Tube-end forming technology, such as tube flaring and flanging technology, will expand its appli- cation in welded tubes. Therefore, future studies will focus on the FE modeling regarding how to consider effects of welding on residual stresses, welding distortions and microstructure, the inhomo- geneous deformation and coordination mechanism of the plastic forming process of tailor-welded tubes, and some end-forming processes of welded tubes, and more comprehensive research on the formin~ mechanism and limit of welded tubes.

关键词： Constraint effects Deformation coordination Finite element modeling Forming Forming limit Inhomogeneous deforma-tion material characteristics Welded tube

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Review of Bipolar Plate in Redox Flow Batteries:materials,Structures,and Manufacturing

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Electrochemical Energy Reviews 2021年第4期4卷 718-756页

作者： Zhining Duan Zhiguo Qu Qinlong Ren Jianfei Zhang MOE Key Laboratory of Thermo‑Fluid Science and Engineering School of Energy and Power EngineeringXi’an Jiaotong UniversityXi’an 710049ShaanxiChina

Interest in large-scale energy storage technologies has risen in recent decades with the rapid development of renewable *** redox flow battery satisfies the energy storage demands well owing to its advantages of scalability,flexibility,high round-trip efficiency,and long *** a critical component of the redox flow battery,the bipolar plates provide mechanical support for the electrodes and act as a physical separator between adjacent cells,as well as constructing the internal circuit and guiding the electrolyte *** present work offers a comprehensive review of the development of bipolar plates in redox flow batteries,covering materials,structures,and manufacturing *** terms of materials,the effects of material types and composition on the compactness,mechanical strength,and electrical conductivity are summarized in ***,the corrosion mechanisms of bipolar plates and the corresponding detection and mitigation methods are *** addition,the structures of the bipolar plates refer to the flow field designs on the *** advantages and disadvantages of these existing flow fields are described,and the tendencies for further optimization are also *** manufacturing of composite bipolar plates in terms of material cost and preparation methods is also *** on the summary of previous research,this work provides suggestions for the future development of high-performance bipolar plates.

关键词： Redox flow battery Bipolar plate material characteristics Structural design Manufacturing method

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Enhancing the biological functionality of poly(lactic-co-glycolic acid)cage-like structures through surface modification with micro-and nano-sized hydroxyapatite particles

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Biosurface and Biotribology 2024年第2期10卷 63-75页

作者： Dongbiao Chang Siyu Li Zhenfan Bai Jing You Lili Cao Qingcao Li Huan Tan Yan Zheng Feilun Ye Jie Weng College of Medicine(Institute of Biomedical Engineering) Southwest Jiaotong UniversityChengduChina Key Laboratory of Advanced Technologies of materials Ministry of Education School of Materials Science and EngineeringSouthwest Jiaotong UniversityChengduChina Medical Cosmetology Department Chengdu Third People's Hospital(Affiliated Hospital of Southwest Jiaotong University)ChengduChina

Biomaterials with exceptional performance are crucial for addressing the challenges of complex bone *** with traditional three-dimensional scaffolds,injectable microspheres enable new strategies for the treatment of irregular bone *** poly(lactic-co-glycolic acid)has found widespread applications as microcarriers of drugs,proteins,and other active *** to the surface of poly(lactic-co-glycolic acid)cage-like structures(PLGA-CAS),hydroxyapatite(HA)effectively reduces inflammation while enhancing biological *** this study,we loaded the surface of PLGA-CAS with micro-and nano-hydroxyapatite particles,referred to asμHA/PLGA-CAS and nHA/PLGA-CAS,***,their material characteristics and biological effects were *** incorporation of hydroxyapatite onto PLGA-CAS resulted in enhanced surface roughness and hydrophilicity,coupled with improved thermal stability and delayed ***,μHA/PLGACAS induced osteogenic differentiation of osteoblast precursor cells,while nHA/PLGACAS improved endothelial cell adhesion and stimulated angiogenic differentiation in ***,these findings suggest thatμHA/PLGA-CAS and nHA/PLGA-CAS,each with distinct characteristics,hold significant potential for application as microcarriers in various biomedical contexts.

关键词： biological functions hydroxyapatite material characteristics surface modification

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Surface modification and functionalization by electrical discharge coating:a comprehensive review

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International Journal of Extreme Manufacturing 2020年第1期2卷 68-99页

作者： Pay Jun Liew Ching Yee Yap Jingsi Wang Tianfeng Zhou Jiwang Yan Fakulti Kejuruteraan Pembuatan Universiti Teknikal Malaysia MelakaHang Tuah Jaya76100Durian TunggalMelakaMalaysia Marine Engineering College Dalian Maritime University1 Linghai RoadGanjingzi DistrictDalian 116026People’s Republic of China Key Laboratory of Fundamental Science for Advanced Machining Beijing Institute of TechnologyNo.5 Zhongguancun South StreetHaidian DistrictBeijing 100081People’s Republic of China Department of Mechanical Engineering Faculty of Science and TechnologyKeio UniversityHiyoshi 3-14-1Kohoku-kuYokohama 223-8522Japan

Hard coatings are extensively required in industry for protecting mechanical/structural parts that withstand extremely high temperature,stress,chemical corrosion,and other hostile *** discharge coating(EDC)is an emerging surface modification technology to produce such hard coatings by using electrical discharges to coat a layer of material on workpiece surface to modify and enhance the surface characteristics or create new surface *** paper presents a comprehensive overview of EDC technologies for various materials,and summarises the types and key parameters of EDC processes as well as the characteristics of resulting *** provides a systematic summary of the fundamentals and key features of the EDC processes,as well as its applications and future trends.

关键词： electrical discharge coating(EDC) surface modification material characteristics mechanical properties extreme conditions

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