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The structure,formation,and effect of plasma protein layer on the blood contact materials:A review

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Biosurface and Biotribology 2022年第1期8卷 1-14页

作者： Xiao Chen Jiang Chen Nan Huang Institute of Biomaterials and surface Engineering Key Lab.for Advanced Technologies of MaterialsMinistry of EducationSouthwest Jiaotong UniversityChengduChina

Understanding material-protein interactions is the basis for regulating material-blood interactions,which is a common topic of interest for medical material *** recent years,researchers have conducted extensive studies on(1)the structural charac-teristics of the plasma protein adsorption layer on the material surface,including the evolution of the protein adsorption layer and its typical binary structure.(2)Influence factors of the protein adsorption layer formation include protein factors(e.g.,isoelectric point,structural stability),material factors(e.g.,wettability,surface charge,morphology,size),and environmental factors.(3)Effects of some common plasma proteins in the protein adsorption layer on material-blood ***,we review the important research results in this field,hoping to provide a reference for future development of advanced blood contact materials.

关键词： blood contact material protein adsorption protein adsorption layer protein conformation plasma protein Vroman effect

Microstructure and mechanical properties of Cr films deposited with different peak powers by high-power impulse magnetron sputtering

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Rare Metals 2023年第1期42卷 327-335页

作者： Yu Wang Bao-Hua Wu Fan Jiang Dong-Lin Ma Yan Yu Hong Sun Nan Huang Yong-Xiang Leng Key Laboratory for Advanced technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu610031China National Key Laboratory for surface Physics and Chemistry Mianyang621907China

For high-power impulse magnetron sputtering(HIPIMS),the peak power applied to the target is of great importance for regulating the ionization degree of the metal target and ion/atom flux *** this work,chromium(Cr)films were deposited on 316-L stainless steel substrates and silicon(100) wafers with different peak powers by *** relationship between peak target power and properties of Cr films was explored in *** resulting structure and mechanical properties of deposited Cr films were characterized by X-ray diffraction(XRD),transmission electron microscope(TEM),atomic force microscopy(AFM),indentation hardness and scratch *** results indicate that the ionization degree of metal target and ion/atom flux ratio increase with the increase in peak power but without the loss of deposition rate at the same *** low ionization degree,the deposited Cr film has low compressive residual stress and low hardness but good adhesion *** the ionization degree of target metal increases with increasing peak power,Cr film exhibits finer size and smoother surface with improved hardness but decreased adhesion strength.

关键词： Cr film HIPIMS Peak power Ionization degree Ion/atom ratio Mechanical properties

In vitro Blood Compatibility of Polyethylene Terephthalate with Covalently Bounded Hirudin on surface

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Journal of Wuhan University of Technology(Materials Science) 2011年第5期26卷 950-954页

作者：李方 School of Petroleum Engineering Southwest Petroleum University Lab of surface Modification of Artificial Organs of Sichuan Key Laboratory of Advanced Technologies of MaterialsMinistry of EducationSouthwest Jiaotong University

Polyethylene terephthalate （PET,Dacron） was modified by surface immobilization of hirudin with glutaraldehyde（GA） as coupling reagent to improve the blood ***-immobilized PETs were characterized by X-ray photoelectron spectroscopy （XPS） and contact angle *** blood compatibility of the PETs was evaluated by platelet adhesion evaluation and fibrinogen conformational change measurements in *** results showed the decrease of platelet adhesion and activation on hirudin-immobilized PET with increasing of glutaraldehyde *** experiment showed that fibrinogen adherence and conformational changes of PET-HRD were less than those of untreated PET,which made the materials difficult to form *** proper reason of blood compatibility improvement was low interface tension between hirudin-immobilized PETs and blood,as well as blood proteins,and low ratio of dispersive/polar component of the surface energy（γsd/γsp） and high hydrophilicity.

关键词： hirudin blood compatibility poly(ethylene terephthalate) (PET) interface tension surface energy

Effect of Wafer Size on the Film Internal Stress Measurement by Wafer Curvature Method

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Journal of Wuhan University of Technology(Materials Science) 2016年第1期31卷 93-99页

作者：江帆 CHEN Shang 冷永祥 HUANG Nan Key Laboratory of Advanced technologies of Materials Ministry of Education School of Materials Science and Engineering Southwest Jiaotong University Chengdu 610031 China National Key Laboratory for surface Physics and Chemistry Mianyang 621907 China

Wafer curvature method has been applied to determine the internal stress in the films using Stoney＇s *** the film deposition,the wafer fixation on the sample holder will restrict the deformation of the rectangle-shaped wafer,which may result in the stress datum difference along length and width *** this paper,the effect of wafer size and the wafer fixation on the TiN film internal stress measured by wafer curvature method was *** rectangle-shaped wafers with different length/width ratios（L/W=1：1,2：1,3：1 and 4：1） were fixed as a cantilever *** the TiN films deposition,the profiles of the film/wafer were measured using a stylus profilometer and then the internal stress was calculated using the Stoney equation in the *** results showed that the fixed end of the wafers limited to some degree the curvature of the wafers along the width *** film internal stress measured by wafer curvature method,the wafer profile should be scanned along the length direction and the scan distance should be greater than or equal to half of wafer *** the length/width ratio of the wafer reached 3：1,the wafer curvature and the calculated stress were basically the same at different positions along the length *** film internal stress measured by wafer curvature method,it was recommended that the length/width ratio of wafer should be considered to be greater than or equal to 3：1,and the deformed profile was scanned along the length direction.

关键词： film internal stress wafer curvature method wafer size wafer fixation

A New Anti-counterfeiting Feature Relying on Invisible Non-toxic Fluorescent Carbon Dots

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Journal of Analysis and Testing 2020年第4期4卷 307-315页

作者： Zahra Fatahi Neda Esfandiari Zahra Ranjbar Protein Research Center Shahid Beheshti University*** TehranIran Faculty of Life Sciences and Biotechnology Shahid Beheshti University*** TehranIran Faculty of surface Coatings and Novel technologies Institute for Color Science and Technology(ICST)*** TehranIran

Fluorescent patterning has attracted a great deal of attention owing to its potential applications in different areas in particular anti-counterfeiting *** carbon dots(CDs)as a type of fluorescent dyes can be used in invisible patterning due to their remarkable optical *** study attempts to introduce green fluorescent CDs as a promising factor in textile ***,a new green source opted to prepare CDs using the hydrothermal ***,toxicity assays were performed to prove the safety of these carbon-based nanoparticles for *** were also conjugated with cotton fiber ***,these green prepared CDs are promising for security labeling in the textile industry.

关键词： Green carbon dots Cytotoxicity Anti-counterfeiting Cotton fiber

Spatial and Temporal Changes in Vapor Pressure Deficit and Their Impacts on Crop Yields in China during 1980–2008

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Journal of Meteorological Research 2017年第4期31卷 800-808页

作者： Shuai ZHANG Fulu TAO Zhao ZHANG Key Laboratory of Land surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of Sciences State Key Laboratory of Earth surface Processes and Resource Ecology Beijing Normal University

Vapor pressure deficit（VPD） is a widely used measure of atmospheric water demand. It is closely related to crop evapotranspiration and consequently has major impacts on crop growth and yields. Most previous studies have focused on the impacts of temperature, precipitation, and solar radiation on crop yields, but the impact of VPD is poorly understood. Here, we investigated the spatial and temporal changes in VPD and their impacts on yields of major crops in China from 1980 to 2008. The results showed that VPD during the growing period of rice, maize, and soybean increased by more than 0.10kPa（10 yr）^–1 in northeastern and southeastern China, although it increased the least during the wheat growing period. Increases in VPD had different impacts on yields for different crops and in different regions. Crop yields generally decreased due to increased VPD, except for wheat in southeastern China. Maize yield was sensitive to VPD in more counties than other crops. Soybean was the most sensitive and rice was the least sensitive to VPD among the major crops. In the past three decades, due to the rising trend in VPD, wheat, maize, and soybean yields declined by more than 10.0% in parts of northeastern China and the North China Plain, while rice yields were little affected. For China as a whole, the trend in VPD during 1980–2008 increased rice yields by 1.32%,but reduced wheat, maize, and soybean yields by 6.02%, 3.19%, and 7.07%, respectively. Maize and soybean in the arid and semi-arid regions in northern China were more sensitive to the increase in VPD. These findings highlight that climate change can affect crop growth and yield through increasing VPD, and water-saving technologies and agronomic management need to be strongly encouraged to adapt to ongoing climate change.

关键词： agriculture climate change vapor pressure deficit evapotranspiration water stress

Increase in Generation of Poly-Crystalline Silicon by Atmospheric Pressure plasma-Assisted Excimer Laser Annealing

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材料科学与工程（中英文B版） 2013年第6期3卷 346-351页

作者： Alexander Gredner Christoph Gerhard Stephan Wieneke Kai Schmidt Wolfgang Viol Laboratory for Laser and plasma technologies University of Applied Sciences and Arts G6ttingen 3 7085 Germany Application Center for plasma and Photonic Fraunhofer Institute for Surface Engineering and Thin Films GOttingen 37085Germany Coherent Laser Systems GmbH & Co. KG Gottingen 37079 Germany

In this work, a novel atmospheric pressure plasma-assisted excimer laser annealing method for increasing the generation efficiency of poly-crystalline silicon from amorphous silicon layers is presented. Here, both the plasma and the laser propagate coaxially in order to generate energetic synergies. The influence of different process gases and plasma discharge modes as well as the working distance were investigated. Depending on the particularly applied plasma, the crystalline area was increased by a factor of approx. 1.1 to 1.9, where the highest efficiency was observed when introducing an argon plasma beam to the annealing process.

关键词：等离子体辅助准分子雷射激光退火多晶硅常压生成效率激光传播协同作用

Recent progress on non-thermal plasma technology for high barrier layer fabrication

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plasma Science and Technology 2018年第6期20卷 1-16页

作者： Haibao ZHANG Lijun SANG Zhengduo WANG Zhongwei LlU Lizhen YANG Qiang CHEN Laboratory of plasma Physics and Materials Beijing Institute of Graphic CommunicationBeijing 102600People＇s Republic of China

This review describes the application of non-thermal plasma（NTP） technology for high barrier layer fabrication in packaging *** technology is considered to be the most prospective approaches for the barrier layer fabrication over the past decades due to unpollution,high speed,*** applications of NTP technology have achieved numerous exciting results in high barrier packaging *** it seemly demands a detailed review to summarize the past works and direct the future *** review focuses on the different NTP resources applied in the high barrier area,the role of plasma surface modification on packaging film surface properties,and the deposition of different barrier coatings based on NTP *** particular,this review emphasizes the cutting-edge technologies of NTP on interlayer deposition with organic,inorganic for multilayer barriers *** future prospects of NTP technology in high barrier film areas are also described.

关键词： non-thermal plasma(NTP) polymer permeability barrier layer surface modification

Ferroelectricity Induced by Oxygen Vacancies in Rhombohedral ZrO_(2) Thin Films

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Energy & Environmental Materials 2024年第1期7卷 229-237页

作者： Veniero Lenzi José P.B.Silva Břetislav Šmíd Vladimir Matoín Cosmin M.Istrate Corneliu Ghica Judith L.MacManus-Driscoll Luís Marques Physics Center of Minho and Porto Universities(CF-UM-UP) University of MinhoCampus de Gualtar 4710-057Braga Portugal Laboratory of Physics for Materials and Emergent technologies LapMETUniversity of Minho4710-057Braga Portugal Department of surface and plasma Science Faculty of Mathematics and PhysicsCharles UniversityV Holešovičkách 218000Prague 8 Czech Republic National Institute of Materials Physics 105 bis Atomistilor 077125Magurele Romania Department of Materials Science and Metallurgy 27 Charles Babbage Rd.Cambridge CB3 OFSUK

Rhombohedral phase Hf_(x)Zr_(1.x)O_(2)(HZO,x from 0 to 1)films are promising for achieving robust ferroelectric polarization without the need for an initial wake-up pre-cycling,as is normally the case for the more commonly studied orthorhombic ***,a large spontaneous polarization observed in rhombohedral films is not fully understood,and there are also large discrepancies between experimental and theoretical *** this work,in rhombohedral ZrO_(2)thin films,we show that oxygen vacancies are not only a key factor for stabilizing the phase,but they are also a source of ferroelectric polarization in the *** is shown experimentally through the investigation of the structural properties,chemical composition and the ferroelectric properties of the films before and after an annealing at moderate temperature(400℃)in an oxygen environment to reduce the V_(o)concentration *** experimental work is supported by density functional theory(DFT)calculations which show that the rhombohedral phase is the most stable one in highly oxygen defective ZrO_(2)*** DFT calculations also show that V_(o)contribute to the ferroelectric *** findings reveal the importance of V_(o)for stabilizing rhombohedral ZrO_(2)thin films with superior ferroelectric properties.

关键词： charged defects ferroelectric polarization rhombohedral phase stability zirconia