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Atomic-scale Origin of the Low Grain-boundary Resistance in Perovskite Solid Electrolyte Li0.375Sr0.4375Ta0.75Zr0.25O3

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Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada 2023年第1期29卷 1267-1269页

作者： Lee, Tom Qi, Ji Gadre, Chaitanya A. Huyan, Huaixun Ko, Shu-Ting Zuo, Yunxing Du, Chaojie Li, Jie Aoki, Toshihiro Wu, Ruqian Luo, Jian Ong, Shyue Ping Pan, Xiaoqing Department of Materials Science and Engineering University of California at Irvine Irvine CA United States Materials Science and Engineering Program University of California San Diego La Jolla CA United States Department of Physics and Astronomy University of California at Irvine Irvine CA United States Department of NanoEngineering University of California San Diego La Jolla CA United States Irvine Materials Research Institute University of California at Irvine Irvine CA United States

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Light-driven single-cell rotational adhesion frequency assay

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eLight 2022年第1期2卷 154-164页

作者： Yaoran Liu Hongru Ding Jingang Li Xin Lou Mingcheng Yang Yuebing Zheng Department of Electrical and Computer Engineering The University of Texas at AustinAustinTX 78712USA Walker Department of Mechanical Engineering The University of Texas at AustinAustinTX 78712USA Materials Science&Engineering Program and Texas Materials Institute The University of Texas at AustinAustinTX 78712USA School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Beijing National Laboratory for Condensed Matter Physics and Laboratory of Soft Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Songshan Lake Materials Laboratory Dongguan 523808GuangdongChina Department of Biomedical Engineering The University of Texas at AustinAustinTX 78712USA

The interaction between cell surface receptors and extracellular ligands is highly related to many physiological processes in living *** techniques have been developed to measure the ligand-receptor binding kinetics at the single-cell ***,few techniques can measure the physiologically relevant shear binding affinity over a single cell in the clinical ***,we develop a new optical technique,termed single-cell rotational adhesion frequency assay(scRAFA),that mimics in vivo cell adhesion to achieve label-free determination of both homogeneous and heterogeneous binding kinetics of targeted cells at the subcellular ***,the scRAFA is also applicable to analyze the binding affinities on a single cell in native human *** its superior performance and general applicability,scRAFA is expected to find applications in study of the spatial organization of cell surface receptors and diagnosis of infectious diseases.

关键词： diagnosis kinetics rotational

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Analysis of Heart Rate and Heart Rate Variability for Stress Evaluation 6th

Analysis of Heart Rate and Heart Rate Variability for Stress...

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6th Kuala Lumpur International Conference on biomedical engineering, BioMed 2021

作者： Lim, Li Ann Ho, Jee Hou Lim, Jong Chern Lim, Einly Chan, Bee Ting Department of Mechanical Materials and Manufacturing Engineering Faculty of Science and Engineering University of Nottingham Malaysia Semenyih Malaysia Realta Solutions Sdn. Bhd. Kuala Lumpur Malaysia Department of Biomedical Engineering Faculty of Engineering Universiti Malaya Kuala Lumpur Malaysia

ISBN: (纸本)9783030907235

Heart rate (HR) and Heart rate variability (HRV) have been proposed as useful indicators for stress evaluation. The reliability and ultra-short-term analysis of these parameters require further investigation. This study aims to: (1) identify the reliable parameters for stress evaluation and (2) determine the surrogacy of ultra-short-term HR and HRV for conventional recording using the recommended standardised tests. Electrocardiograms (ECG) from the WESAD database consisting of 15 subjects were processed and analysed. Individual response to stress was evaluated. The reliability of ultra-short-term recording was examined by evaluating both the correlation and limits-of-agreement of ultra-short (1-min) and conventional short-term (5-min) recording. Our results showed that mean RRi and the mean HR were reliable in identifying stress condition. In the ultra-short-term analysis, most of the parameters showed significantly high correlation (r > 0.7, p © 2022, Springer Nature Switzerland AG.

关键词： Heart

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Magnesium-based nanocomposites:A review from mechanical,creep and fatigue properties

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Journal of Magnesium and Alloys 2023年第8期11卷 2655-2687页

作者： S.Abazari A.Shamsipur H.R.Bakhsheshi-Rad J.W.Drelich J.Goldman S.Sharif A.F.Ismail M.Razzaghi Department of Materials and Metallurgical Engineering Amirkabir University of TechnologyTehranIran Advanced Materials Research Center Department of Materials EngineeringNajafabad BranchIslamic Azad UniversityNajafabadIran Department of Materials Science and Engineering Michigan Technological UniversityHoughtonMI 49931USA Department of Biomedical Engineering Michigan Technological UniversityHoughtonMI 49931USA Advanced Manufacturing Research Group Faculty of Mechanical EngineeringUniversiti Teknologi MalaysiaJohor Bahru 81310JohorMalaysia Advanced Membrane Technology Research Center(AMTEC) Universiti Teknologi MalaysiaJohor Bahru 81310JohorMalaysia

The addition of nanoscale additions to magnesium(Mg)based alloys can boost mechanical characteristics without noticeably decreasing *** Mg is the lightest structural material,the Mg-based nanocomposites(NCs)with improved mechanical properties are appealing materials for lightweight structural *** contrast to conventional Mg-based composites,the incorporation of nano-sized reinforcing particles noticeably boosts the strength of Mg-based nanocomposites without significantly reducing the *** present article reviews Mg-based metal matrix nanocomposites(MMNCs)with metallic and ceramic additions,fabricated via both solid-based(sintering and powder metallurgy)and liquid-based(disintegrated melt deposition)*** also reviews strengthening models and mechanisms that have been proposed to explain the improved mechanical characteristics of Mg-based alloys and ***,synergistic strengthening mecha-nisms in Mg matrix nanocomposites and the dominant equations for quantitatively predicting mechanical properties are ***,this study offers an overview of the creep and fatigue behavior of Mg-based alloys and nanocomposites using both traditional(uniaxial)and depth-sensing indentation *** potential applications of magnesium-based alloys and nanocomposites are also surveyed.

关键词： Magnesium-based nanocomposites Nanoreinforcement Strengthening mechanisms Creep properties Fatigue properties

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Mechanical Evaluation of Bone Scaffolds' Behavior under Compression 46

Mechanical Evaluation of Bone Scaffolds' Behavior under Comp...

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46th Annual International Conference of the IEEE engineering in Medicine and Biology Society, EMBC 2024

作者： Ntousi, Ourania A. Pleouras, Dimitrios S. Siogkas, Panagiotis K. Roumpi, Maria Kontaxis, Lykourgos C. Bourantas, George Deligianni, Despoina Kostopoulos, Vassilis Pakos, Emilios E. Fotiadis, Dimitrios I. University of Ioannina Unit of Medical Technology and Intelligent Information Systems Dept. of Materials Science and Engineering IoanninaGR45110 Greece University of Patras Laboratory of Biomechanics and Biomedical Engineering Dept. of Mechanical Engineering and Aeronautics RionGR26500 Greece University of Patras Dept of Agriculture MessolonghiGR30200 Greece University of Patras Dept. of Mechanical Engineering and Aeronautics Rio Achaia26504 Greece University of Ioannina School of Medicine Department of Orthopaedic Surgery and Traumatology Epirus Ioannina45221 Greece University of Ioannina Unit of Medical Technology and Intelligent Information Systems Dept. of Materials Science and Engineering Biomedical Research Institute-FORTH GR45110 Greece

ISBN: (纸本)9798350371499

This study aims to comprehensively evaluate the mechanical performance of bone scaffolds, focusing on a compression test displacement rate 0.5mm/s and 2mm/min. The research employs the Yeoh 3rd order model for the hyperelastic PLA scaffolds to simulate the compression tests, which are validated using experimental results. More specifically, the stress- strain curves derived from the in-silico analysis exhibit strong agreement with the experimental results, highlighting the reliability of the computational approach. Two distinct scaffold geometries were employed and a comparative analysis of their responses to specific loading conditions had been performed. The investigation reveals that the PCL-50 scaffold demonstrates promising mechanical behavior in terms of better endurance in such loading conditions. © 2024 IEEE.

关键词： Stress-strain curves

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Impact of Thermo-Mechanical Processing on Structure–Property Relationships for the Biodegradable ZX10 Mg Alloy

Impact of Thermo-Mechanical Processing on Structure–Propert...

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Magnesium Technology Symposium held at the TMS Annual Meeting and Exhibition, 2024

作者： Raguraman, Sreenivas McGovern, Ryan Kim, Andrew Ivanovskaya, Veronica Nguyen, Tram Ayodeji, Tunde Griebel, Adam Weihs, Timothy Department of Materials Science and Engineering Johns Hopkins University BaltimoreMD21218 United States Hopkins Extreme Materials Institute Johns Hopkins University BaltimoreMD21218 United States Department of Biomedical Engineering Johns Hopkins University BaltimoreMD21218 United States Department of Mechanical Engineering Johns Hopkins University BaltimoreMD21218 United States Research and Development Fort Wayne Metals Research Products Corp Fort WayneIN46809 United States Hopkins Extreme Materials Institute Johns Hopkins University BaltimoreMD21218 United States

ISBN: (纸本)9783031502392

Magnesium alloysMagnesium alloys (Mg alloys) offer immense potential as intelligent alternatives to traditional implant materials due to their inherent degradability, biocompatibility, and exceptional mechanical propertiesMechanical Properties. However, their rapid deterioration hinders their practical applications, compromising their mechanical integrity. This study addresses this challenge by investigating the effects of thermo-mechanical processingThermo-mechanical Processing, including extrusion, cECAP, rolling, and annealing, on the high-strength, dilute ZX10 Mg alloy. By subjecting the alloy to over thirty processing conditions, we identify an optimal combination of high-strength and low-corrosion ratesCorrosion Rate. Simple characterizationCharacterization techniques like XRD, optical microscopy, and SEM were employed to rapidly evaluate the microstructural changes post-processing. The findings identify that grain boundary and strain hardening play pivotal roles in enhancing hardness, while factors such as textureTexture, dislocationDislocation density, and precipitates impact corrosionCorrosion significantly. This comprehensive investigation provides valuable insights into processingProcessing-structure–property relationships for Mg alloysMagnesium alloys (Mg alloys), paving the way for developing superior biodegradable implant materials. © The Minerals, Metals & materials Society 2024.

关键词： Strain hardening

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Tunable Emission and Energy Transfer of the Novel KY_(1-x)(MoO_(4))_(2-y)(WO_(4))y:xLn^(3+)(Ln^(3+)=Dy^(3+),Eu^(3+),and Tm^(3+))Single-phase White Luminescence Phosphor for White LEDs

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Journal of Wuhan University of Technology(materials science) 2023年第6期38卷 1278-1286页

作者： ZHU Hai HE Bin HUANG Weigang Department of Oncology The Third People's Hospital of ChengduAfiliated Hospital of Southwest Jiaotong University&The Second Affiliated Hospital of ChengduChongqing Medical UniversityChengdu 610031China Medical Research Center The Third People's Hospital of ChengduAfiliated Hospital of Southwest Jiaotong University&The Second Afiliated Hospital of ChengduChongqing Medical UniversityChengdu 610031China National Engineering Research Center for Biomaterials College of Biomedical MaterialsSichuan UniversityChengdu 610064China College of Materials Science and Engineering Sichuan UniversityChengd 610064China

The phosphors of KY_(1-x)(MoO_(4))_(2-y)(WO_(4))y:xLn^(3+)(Ln^(3+)=Tm^(3+),Dy^(3+),Eu^(3+))were synthesized by using a sol-gel ***,the crystal structure,luminescence properties,energy transfer,and white emission of the prepared materials were *** molar ratio of the anion group on the photoluminescence(PL)emission and excitation intensity were investigated,revealing that the optimum intensity could be obtained by using=3:*** optimal Dy^(3+) doping concentration of KY(MoO_(4))1.5(WO4)0.5was *** addition,the color-tunable emissions of Dy^(3+)/Eu^(3+)-codoped KY(MoO_(4))1.5(WO4)0.5phosphors were observed because of the effective energy transfer(ET)from Dy^(3+)to Eu^(3+)***,by doping appropriate concentrations of Tm^(3+),Dy^(3+),and Eu^(3+)and different concentrations of(WO_(4))^(2-),white light emitting phosphors KY_(0.92)(WO_(4))2:0.01Tm^(3+),0.06Dy^(3+),0.01Eu^(3+)with excellent color-rending properties were *** chromaticity coordinate was calculated as(x=0.3238,y=0.3173),closing to the artificial daylight(D65,x=0.313,y=0.329)illuminant,and which indicates the potential application of near ultraviolet White light-emitting diodes(WLEDs).

关键词： rare earth phosphors white LEDs energy transfer sol-gel method

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Improved Metaheuristics with Machine Learning Enabled Medical Decision Support System

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Computers, materials & Continua 2022年第11期73卷 2423-2439页

作者： Sara A.Althubiti JoséEscorcia-Gutierrez Margarita Gamarra Roosvel Soto-Diaz Romany F.Mansour Fayadh Alenezi Department of Computer Science College of Computer and Information SciencesMajmaah UniversityAl-Majmaah11952Saudi Arabia Research Center-CIENS Escuela Naval de Suboficiales A.R.C.“Barranquilla”BarranquillaColombia Electronics and Telecommunications Engineering Program Universidad Autónoma del CaribeBarranquilla080001Colombia Departament of Computational Science and Electronic Universidad de la CostaCUCBarranquilla080001Colombia Biomedical Engineering Program Universidad Simón BolívarBarranquilla080001Colombia Department of Mathematics Faculty of ScienceNew Valley UniversityEl-Kharga 72511Egypt Department of Electrical Engineering College of EngineeringJouf UniversitySaudi Arabia

Smart healthcare has become a hot research topic due to the contemporary developments of Internet of Things(IoT),sensor technologies,cloud computing,and ***,the latest advances of Artificial Intelligence(AI)tools find helpful for decision-making in innovative healthcare to diagnose several *** Cancer(OC)is a kind of cancer that affects women’s ovaries,and it is tedious to identify OC at the primary stages with a high mortality *** OC data produced by the Internet of Medical Things(IoMT)devices can be utilized to differentiate *** this aspect,this paper introduces a new quantum black widow optimization with a machine learningenabled decision support system(QBWO-MLDSS)for smart *** primary intention of the QBWO-MLDSS technique is to detect and categorize the OC rapidly and ***,the QBWO-MLDSS model involves a Z-score normalization approach to pre-process the *** addition,the QBWO-MLDSS technique derives a QBWO algorithm as a feature selection to derive optimum feature ***,symbiotic organisms search(SOS)with extreme learning machine(ELM)model is applied as a classifier for the detection and classification of ELM model,thereby improving the overall classification *** design of QBWO and SOS for OC detection and classification in the smart healthcare environment shows the study’s *** experimental result analysis of the QBWO-MLDSS model is conducted using a benchmark dataset,and the comparative results reported the enhanced outcomes of the QBWO-MLDSS model over the recent approaches.

关键词： Ovarian cancer decision support system smart healthcare IoMT deep learning feature selection

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Field-driven cluster formation in two-dimensional colloidal binary mixtures

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Physical Review E 2023年第4期107卷 044605-044605页

作者： Dingwen Qian Monica Olvera de la Cruz Applied Physics Program Department of Materials Science and Engineering Department of Chemistry and Department of Physic and Astronomy Northwestern University Evanston Illinois 60208 USA

We study size- and charge-asymmetric oppositely charged colloids driven by an external electric field. The large particles are connected by harmonic springs, forming a hexagonal-lattice network, while the small particles are free of bonds and exhibit fluidlike motion. We show that this model exhibits a cluster formation pattern when the external driving force exceeds a critical value. The clustering is accompanied with stable wave packets in vibrational motions of the large particles.

关键词： Transport phenomena Charged colloids

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Morphology-controlled synthesis of multi-metal-based spinel oxide nanocatalysts and their performance for oxygen reduction

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Electron 2024年第3期2卷 13-19页

作者： Can Li Jinfong Pan Xiaobo Chen Lihua Zhang Anna Dennett Prabhu Bharathan Douglas Lee Guangwen Zhou Jiye Fang Department of Chemistry State University of New York at BinghamtonBinghamtonNew YorkUSA Materials Science and Engineering Program State University of New York at BinghamtonBinghamtonNew YorkUSA Center for Functional Nanomaterials Brookhaven National LaboratoryUptonNew YorkUSA Department of Mechanical Engineering State University of New York at BinghamtonBinghamtonNew YorkUSA

We present a one-pot colloidal synthesis method for producing monodisperse multi-metal(Co,Mn,and Fe)spinel nanocrystals(NCs),including nanocubes,nano-octahedra,and concave *** study explores the mechanism of morphology control,showcasing the pivotal roles of metal precursors and capping ligands in determining the exposed crystal planes on the NC *** cubic spinel NCs,terminated with exclusive{100}-facets,demonstrate superior electrocatalytic activity for the oxygen reduction reaction(ORR)in alkaline media compared to their octahedral and concave cubic ***,at 0.85 V,(CoMn)Fe_(2)O_(4) spinel oxide nanocubes achieve a high mass activity of 23.9 A/g and exhibit excellent stability,highlighting the promising ORR performance associated with{100}-facets of multi-metal spinel oxides over other low-index and high-index *** by exploring the correlation between ORR performance and surface atom arrangement(active sites),surface element composition,as well as other factors,this study introduces a prospective approach for shapecontrolled synthesis of advanced spinel oxide *** underscores the significance of catalyst shape control and suggests potential applications as nonprecious metal ORR electrocatalysts.

关键词： alkaline media morphology control multi-metal spinel catalyst nanocrystals oxygen reduction

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